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Our NA=10⁻³ lens imaged ~10¹² photons onto a CCD in 8 milliseconds. (Left to right) Dan, Shao-Wen, Zhenjie, Scott, Leon, Rowan, Julian, Jacqie, Olive, Diego, Matthew, Malte, Jack. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/ca28e79a-e0c8-4794-9b5b-c43845674173/2023-07-17-group.jpg People The group relies on a favorable branching ratio as they collectively scatter light. Our NA=10⁻³ lens imaged ~10¹² photons onto a CCD in 8 milliseconds. (Left to right) Dan, Shao-Wen, Zhenjie, Scott, Leon, Rowan, Julian, Jacqie, Olive, Diego, Matthew, Malte, Jack. http://ultracold.physics.berkeley.edu/dan-stamperkurn daily 0.75 2016-03-29 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459291285218-YS8U6121AK8FTXDTLF7M/image-asset.jpeg Dan Stamper-Kurn https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459291285218-YS8U6121AK8FTXDTLF7M/image-asset.jpeg Dan Stamper-Kurn http://ultracold.physics.berkeley.edu/research/highlights daily 0.75 2026-03-16 http://ultracold.physics.berkeley.edu/research/e4 daily 0.75 2019-03-08 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1460160380297-G4ME93XAIKBFPPYY53U3/2016-04-08+16.44.53.jpg E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466893283-86FIBHXOSG82021FR661/image-asset.jpeg E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552024268886-Z4DSKF9WYQYTBNGV7WT9/LiRbmag.png E4: Collective Modes of Spinor Gases Magnetically co-trapped Li-7 and Rb-87 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552024535430-DDPNU9L4ZDRPK8XKKCBL/CDR.png E4: Collective Modes of Spinor Gases Cross dimensional relaxation of Li-7 in Rb-87 reservoir https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466655443-SVPFU02RCLGQVI4KGLLD/image-asset.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466691294-YQOG9YOSQ17TRQD3HG0G/image-asset.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466608063-VRP46YBCFL5C9JLFGAIJ/image-asset.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466555951-AD0RRX061KMY8BR4V4U8/magnon_dipole_gap.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466497495-86WNV8TDPZRDDZUYCOZU/image-asset.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466358269-UEW7WY16JN3QT28B6H8O/image-asset.png E4: Collective Modes of Spinor Gases Momentum distribution of the condensed atoms at various temperatures. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466382366-2WT98M7I9KO3L3DYHQRF/image-asset.png E4: Collective Modes of Spinor Gases The temperature is easily determined from the momentum distribution of the magnons. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466298382-HJE2J9LZO4HT9Q7Z6IK0/image-asset.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466893283-86FIBHXOSG82021FR661/image-asset.jpeg E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552024268886-Z4DSKF9WYQYTBNGV7WT9/LiRbmag.png E4: Collective Modes of Spinor Gases Magnetically co-trapped Li-7 and Rb-87 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552024535430-DDPNU9L4ZDRPK8XKKCBL/CDR.png E4: Collective Modes of Spinor Gases Cross dimensional relaxation of Li-7 in Rb-87 reservoir https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466655443-SVPFU02RCLGQVI4KGLLD/image-asset.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466691294-YQOG9YOSQ17TRQD3HG0G/image-asset.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466608063-VRP46YBCFL5C9JLFGAIJ/image-asset.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466555951-AD0RRX061KMY8BR4V4U8/magnon_dipole_gap.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466497495-86WNV8TDPZRDDZUYCOZU/image-asset.png E4: Collective Modes of Spinor Gases https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466358269-UEW7WY16JN3QT28B6H8O/image-asset.png E4: Collective Modes of Spinor Gases Momentum distribution of the condensed atoms at various temperatures. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466382366-2WT98M7I9KO3L3DYHQRF/image-asset.png E4: Collective Modes of Spinor Gases The temperature is easily determined from the momentum distribution of the magnons. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466298382-HJE2J9LZO4HT9Q7Z6IK0/image-asset.png E4: Collective Modes of Spinor Gases http://ultracold.physics.berkeley.edu/research/e5 daily 0.75 2025-05-10 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1694791306362-5CIZ5GDNNW9E37XXQYDL/2023_02_23-Scientific+American-Optical_Lattice-UC_Berkley-0009-FNL.jpg E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/46fc27ce-58e6-47cf-a620-19d5038296ac/e9-05.jpg E9: Optical Kagome Lattice From left to right: Shao-Wen Chang, Malte Schwarz, Rowan Duim https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528329188789-1856WLRSEJBZ4Y655F1T/lattices_landscape.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528332980534-IU415XBS3SMXQ3SYEY8T/kagomeband.png E9: Optical Kagome Lattice Kagome band structure https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1601056463322-KWAK85N3LO02284FNWUH/Interaction+Paper+cover_real.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528324875694-XEX81XWT1C7O1AL31TLF/0us.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528325110676-66B2SMDN9USYN65KGYHP/image-asset.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528322182280-MUTRFABTDNU4T6GHRLC7/mean+field+diffraction+pictures.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528322224491-VWWS8H2SXGBXI074V1IO/mean+field+scaled+data.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528323463261-2SCJ536MKZEJCL878YPW/asy+diffraction+pictures.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528328894022-I0YTM6HH6S1DHB01QYRO/kagome.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/46fc27ce-58e6-47cf-a620-19d5038296ac/e9-05.jpg E9: Optical Kagome Lattice From left to right: Shao-Wen Chang, Malte Schwarz, Rowan Duim https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528329188789-1856WLRSEJBZ4Y655F1T/lattices_landscape.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528332980534-IU415XBS3SMXQ3SYEY8T/kagomeband.png E9: Optical Kagome Lattice Kagome band structure https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1694791583815-PHZFTMY61Y596VVPTLZ6/2023_02_23-Scientific+American-Optical_Lattice-UC_Berkley-0044.jpg E9: Optical Kagome Lattice - Hexagonal science glass cell 532nm (green) light illuminates our specially anti-reflection textured glass cell. Magnetic field coils used to levitate and manipulate atomic clouds usually block this view. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1694791583636-MOKKBVURFO3W4CX3ZQ2U/2023_02_23-Scientific+American-Optical_Lattice-UC_Berkley-0060.jpg E9: Optical Kagome Lattice - Lattice light preparation We work with 532nm (green) and 1064nm (infra-red, here pink) light to produce our Kagome lattice geometry. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1694791596827-RLMRF2F8CAA95A4CVUF5/2023_02_23-Scientific+American-Optical_Lattice-UC_Berkley-0106.jpg E9: Optical Kagome Lattice - Potassium laser light Light at 767nm (infra-red, here white) addresses a specific spectral line in potassium. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1694791597752-PD2LYCJXTO99Y3EEYLNH/2023_02_23-Scientific+American-Optical_Lattice-UC_Berkley-0113.jpg E9: Optical Kagome Lattice - Potassium laser light preparation Different active and passive optical components are used to create, amplify and manipulate laser light at very specific wavelengths. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1694791610955-7JZW1UMXXCGOC995E4EY/2023_02_23-Scientific+American-Optical_Lattice-UC_Berkley-0283-FNL.jpg E9: Optical Kagome Lattice - Experiment control and data analysis To control our experiment reliably and analyse data that we produce, multiple computers, oscilloscopes and other instruments are necessary. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1694791606218-JI4AXVVLAZ371QNX2AWR/2023_02_23-Scientific+American-Optical_Lattice-UC_Berkley-0135.jpg E9: Optical Kagome Lattice - Vaccum chamber setup in enclosure https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1601056463322-KWAK85N3LO02284FNWUH/Interaction+Paper+cover_real.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1601007152460-WJJMU3QUB0FQW4L43KFG/medium1.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1601007152179-TXQPX59JO4D6OZ0T4SMF/medium.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1601007151701-7FFY5VG5BFF3TCLAVXCI/medium3.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1601007151702-TAMIGIW0R8H0J0XG4XYY/medium4.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528324875694-XEX81XWT1C7O1AL31TLF/0us.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528325110676-66B2SMDN9USYN65KGYHP/image-asset.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528322182280-MUTRFABTDNU4T6GHRLC7/mean+field+diffraction+pictures.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528322224491-VWWS8H2SXGBXI074V1IO/mean+field+scaled+data.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528323463261-2SCJ536MKZEJCL878YPW/asy+diffraction+pictures.png E9: Optical Kagome Lattice https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1528328894022-I0YTM6HH6S1DHB01QYRO/kagome.png E9: Optical Kagome Lattice http://ultracold.physics.berkeley.edu/research/retired daily 0.75 2026-03-16 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1460160891517-FB0DK1NFHW1WBPC66JZM/IMG_4915.JPG Retired Experiments https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1611268483357-38IFE25FVCGHN9VGXPNM/vortex_4.jpg Retired Experiments https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1611270082814-ONX35Z2AA82LHNIZJTW5/SpinschemeNew.jpg Retired Experiments https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1610131074134-YCAWDUC5J0KYUCWGEU8K/E1_retired_experiment_150.png Retired Experiments - E1: 87-Rb BEC https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1610132596907-Q866YZF0ZD04G5OOWY3M/E2_retired_experiment_hand.png Retired Experiments - E2: Ring trap & cavity QED https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1766436144631-EQRYQT3FCWMRU7OYCIUB/e3_3.webp Retired Experiments - E3: Cavity on a chip https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1610145568911-SRY58DKC07RG4GA0EW85/E4_retired_experiment_v2.png Retired Experiments - E4: Magnons & Li-Rb https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552368470207-KXB5M8N5NMX7I1361S89/20190311_144803.jpg Retired Experiments - E7: Ultracold LiRb https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466655443-SVPFU02RCLGQVI4KGLLD/image-asset.png Retired Experiments Phonon modes of various order in an optical ring trap. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466608063-VRP46YBCFL5C9JLFGAIJ/image-asset.png Retired Experiments In-situ measurements of the magnon density show oscillation in the contrast resulting from interference between stationary and moving magnons. These oscillations measure precisely the magnon recoil frequency even within a dense Bose-Einstein condensed gas. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459466298382-HJE2J9LZO4HT9Q7Z6IK0/image-asset.png Retired Experiments https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1611268483357-38IFE25FVCGHN9VGXPNM/vortex_4.jpg Retired Experiments https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1611270082814-ONX35Z2AA82LHNIZJTW5/SpinschemeNew.jpg Retired Experiments https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552368470207-KXB5M8N5NMX7I1361S89/20190311_144803.jpg Retired Experiments https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552368739693-SKII4UBD7GQJAU9W9FG7/20190311_144917.jpg Retired Experiments http://ultracold.physics.berkeley.edu/claire-thomas daily 0.75 2016-10-18 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459298402801-3K5GCWGA3B9Z4LZ786RK/image-asset.jpeg Claire Thomas https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459298402801-3K5GCWGA3B9Z4LZ786RK/image-asset.jpeg Claire Thomas http://ultracold.physics.berkeley.edu/publications/papers daily 0.75 2026-03-06 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1460160729910-NZXQMYRBRMYFANQ34NOQ/2016-04-08+16.36.17.jpg Papers http://ultracold.physics.berkeley.edu/publications/theses daily 0.75 2026-05-15 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1460160801217-H4Z9B0W4CFDP68KOL60B/2016-04-08+16.36.17.jpg Theses http://ultracold.physics.berkeley.edu/publications/popular-coverage daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1460160841766-I2S39J4SKAXPRPM2XR3I/2016-04-08+16.36.17.jpg Popular Coverage http://ultracold.physics.berkeley.edu/useful-links daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1460161247238-IUSAOSDKF4F9E0MMI8OF/2016-04-08+16.36.17.jpg Useful Links http://ultracold.physics.berkeley.edu/review-papers daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1460161338474-13Q8UTVN3XT5FQSQ3NUO/2016-04-08+16.36.17.jpg Review Papers http://ultracold.physics.berkeley.edu/join-us daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/tom-barter daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/jonathan-kohler daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/justin-gerber daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459467532223-ZYX9QN01EB3MQPLRB9OI/image-asset.jpeg Justin Gerber https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459467532223-ZYX9QN01EB3MQPLRB9OI/image-asset.jpeg Justin Gerber http://ultracold.physics.berkeley.edu/shun-wu daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/tsz-him-leung daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459472023598-51H9OM7S0CWO45BIMAW6/image-asset.jpeg Tsz Him Leung Zephy (right) learning to be cool from the senior student. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459472023598-51H9OM7S0CWO45BIMAW6/image-asset.jpeg Tsz Him Leung Zephy (right) learning to be cool from the senior student. http://ultracold.physics.berkeley.edu/emma-deist daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1491074734806-YS68U3NFCGE2GJ8ZMM0B/image-asset.jpeg Emma Deist Emma and Zephy at the lab ski retreat in Tahoe (spring 2017) https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1491074734806-YS68U3NFCGE2GJ8ZMM0B/image-asset.jpeg Emma Deist Emma and Zephy at the lab ski retreat in Tahoe (spring 2017) http://ultracold.physics.berkeley.edu/masayuki-okano daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1489696905492-2OPMBLLCUUA56WBHSWNN/Profile_Masayuki.jpg Masayuki Okano https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1489696905492-2OPMBLLCUUA56WBHSWNN/Profile_Masayuki.jpg Masayuki Okano http://ultracold.physics.berkeley.edu/fang-fang daily 0.75 2016-04-07 http://ultracold.physics.berkeley.edu/armando-montejano daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/debnath daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/kayleigh-cassella daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552076237190-4Q7KG9KX7BNE94C6BHYE/IMG_6475.jpg Kayleigh Cassella https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552076237190-4Q7KG9KX7BNE94C6BHYE/IMG_6475.jpg Kayleigh Cassella http://ultracold.physics.berkeley.edu/johannes-zeiher daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/scott-eustice daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/josh-isaacs daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/julian-wolf daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1551983587142-KJ77FABVMV7ZGHK1IJ21/DSCF2498_color_small.jpeg Julian Wolf Julian turning knobs in E3. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1551983587142-KJ77FABVMV7ZGHK1IJ21/DSCF2498_color_small.jpeg Julian Wolf Julian turning knobs in E3. http://ultracold.physics.berkeley.edu/aaron-smull daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/e7-ultracold-molecules daily 0.75 2020-03-12 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552368470207-KXB5M8N5NMX7I1361S89/20190311_144803.jpg E7: Ultracold Molecules - The Birth of Molecules The first stages of vacuum assembly, well underway. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552368739693-SKII4UBD7GQJAU9W9FG7/20190311_144917.jpg E7: Ultracold Molecules https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552368470207-KXB5M8N5NMX7I1361S89/20190311_144803.jpg E7: Ultracold Molecules - The Birth of Molecules The first stages of vacuum assembly, well underway. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1552368739693-SKII4UBD7GQJAU9W9FG7/20190311_144917.jpg E7: Ultracold Molecules http://ultracold.physics.berkeley.edu/e8-ultracold-titanium daily 0.75 2025-12-23 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/7e3195b6-a7f5-46f5-967d-def56a100cab/e8-07.jpg E8: Ultracold Titanium - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1551933739808-FEKSJ8PX49L2OX6D507O/Goldilocks.jpg E8: Ultracold Titanium Our conception of the elements that have previously been cooled to ultracold temperatures: the simple, spherically symmetric atoms in black, the complex, magnetic atoms in red, and the intermediate atoms in blue https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/7e3195b6-a7f5-46f5-967d-def56a100cab/e8-07.jpg E8: Ultracold Titanium - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1551933739808-FEKSJ8PX49L2OX6D507O/Goldilocks.jpg E8: Ultracold Titanium Elements that have previously been cooled to ultracold temperatures: the simple, spherically symmetric atoms in black, and the complex, magnetic atoms in red. Intermediate atoms (in blue) offer unique properties for quantum simulation. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/bccf7132-f498-4cce-9091-f35bdb9a7134/PHOTO-2025-01-30-14-35-11.jpg E8: Ultracold Titanium - Make it stand out Magneto-optical trap of titanium atoms. The small blue dot in the center of the vacuum chamber is about 800,000 Ti atoms cooled to less than a thousandth of a degree above absolute zero! https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/7e6db47a-9e09-4f59-922e-3d490367521e/IMG_3076.jpg E8: Ultracold Titanium Jack assembling the next-generation Ti MOT chamber in our new lab http://ultracold.physics.berkeley.edu/diego-pena daily 0.75 2026-03-13 http://ultracold.physics.berkeley.edu/e6-cavity-microscope daily 0.75 2025-05-19 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1628537894899-KFLX2BRPJSZ71HJF5G1C/fig_for_website+E6.jpg E6: Cavity Microscope https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1633371320347-HZ33ZX1XIF6TMQUDLOXQ/Image+from+iOS.jpg E6: Cavity Microscope - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583957966081-PCODEKKRTSEUN0GXT01M/IMG_6920+%281%29.JPG E6: Cavity Microscope Experimental Apparatus including science and MOT vacuum chambers and surrounding optic systems. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583967847124-TCABS0BJB2PPKVS8OO9A/Artboard+1.png E6: Cavity Microscope Cartoon diagram of E6. Here a single atom is shown inside of an optical cavity. In the experiment there may be tens or hundreds of atoms during our experiments. The light leaking out of the cavity is detected. Simultaneously a high resolution objective both images the atom within the cavity and is used to send in trapping or addressing light to manipulate the state of the atoms. In the future a closed feedback loop will be implemented in which the cavity signal is used to modulate the addressing beams for enhanced quantum control. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1628538028259-S5B3TOXU0L94KNJSGLPE/fig_for_website+E6.jpg E6: Cavity Microscope - Make it stand out figure-a https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583958463319-SBG13276IGSUO661YA42/IMG_6664.JPG E6: Cavity Microscope Top view of optical cavity on MACOR vibration isolation stage. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583967527978-QJJRZ595JCWIECVXKDCS/fluorescence.png E6: Cavity Microscope Fluorescence image of density enhancement of atoms in neighboring microtraps imaged through the high resolution objective. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583970887863-TN84ZH04D2YH7SM4CX4M/cavity+shift.png E6: Cavity Microscope Cavity sweeps across resonance. The lower traces show the frequency of the probe laser as a function of time. The frequency is swept one way across resonance and then the other way. The upper traces show the transmission of light through the cavity without atoms (red) and with atoms (blue). The shift in frequency is due to the vacuum Rabi splitting https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583995676336-ZNOWK9UIAUCIF3OUTJ22/BEC.png E6: Cavity Microscope Bose Einstein condensation of atoms within our chamber. (aka the eye of Sauron) https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583994607250-M7J1O5F6EJ2RZYBEZV4U/atoms%2Bin%2Bcavity.jpg E6: Cavity Microscope Atoms after transport in optical dipole trap in the science chamber between the two cavity mirrors (pictured on the left and right of the frame) https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1633371320347-HZ33ZX1XIF6TMQUDLOXQ/Image+from+iOS.jpg E6: Cavity Microscope - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583957966081-PCODEKKRTSEUN0GXT01M/IMG_6920+%281%29.JPG E6: Cavity Microscope Experimental Apparatus including science and MOT vacuum chambers and surrounding optic systems. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583967847124-TCABS0BJB2PPKVS8OO9A/Artboard+1.png E6: Cavity Microscope Cartoon diagram of E6. Here a single atom is shown inside of an optical cavity. In the experiment there may be tens or hundreds of atoms during our experiments. The light leaking out of the cavity is detected. Simultaneously a high resolution objective both images the atom within the cavity and is used to send in trapping or addressing light to manipulate the state of the atoms. In the future a closed feedback loop will be implemented in which the cavity signal is used to modulate the addressing beams for enhanced quantum control. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1551914820414-DIUOM9BJ20V5BS55GG72/group_pic.png E6: Cavity Microscope Justin, Johannes, Emma, Aron, Alec, Rachel https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1628538028259-S5B3TOXU0L94KNJSGLPE/fig_for_website+E6.jpg E6: Cavity Microscope - Make it stand out figure-a https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583958463319-SBG13276IGSUO661YA42/IMG_6664.JPG E6: Cavity Microscope Top view of optical cavity on MACOR vibration isolation stage. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583967527978-QJJRZ595JCWIECVXKDCS/fluorescence.png E6: Cavity Microscope Fluorescence image of density enhancement of atoms in neighboring microtraps imaged through the high resolution objective. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583970887863-TN84ZH04D2YH7SM4CX4M/cavity+shift.png E6: Cavity Microscope Cavity sweeps across resonance. The lower traces show the frequency of the probe laser as a function of time. The frequency is swept one way across resonance and then the other way. The upper traces show the transmission of light through the cavity without atoms (red) and with atoms (blue). The shift in frequency is due to the vacuum Rabi splitting https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583995676336-ZNOWK9UIAUCIF3OUTJ22/BEC.png E6: Cavity Microscope Bose Einstein condensation of atoms within our chamber. (aka the eye of Sauron) https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1583994607250-M7J1O5F6EJ2RZYBEZV4U/atoms%2Bin%2Bcavity.jpg E6: Cavity Microscope Atoms after transport in optical dipole trap in the science chamber between the two cavity mirrors (pictured on the left and right of the frame) http://ultracold.physics.berkeley.edu/virtual-lab-tours daily 0.75 2025-05-10 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1653450608012-F37LAXIQX45TP30ICM8G/20220520_152257.jpg Virtual Lab Tours http://ultracold.physics.berkeley.edu/malte-schwarz daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1682977281755-1MUHV6750FDXJYISRJHP/e9-24.jpg Malte Schwarz https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/2e920b90-c9b0-45e3-abbd-2a0bfe4d6e95/2023_02_23-Scientific+American-Optical_Lattice-UC_Berkley-0191.jpg Malte Schwarz https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/2e920b90-c9b0-45e3-abbd-2a0bfe4d6e95/2023_02_23-Scientific+American-Optical_Lattice-UC_Berkley-0191.jpg Malte Schwarz http://ultracold.physics.berkeley.edu/charles-brown daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1628105000324-3ZHN9OQIA9K2ACLXX1SP/me1.jpeg Charles Brown - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1628105000324-3ZHN9OQIA9K2ACLXX1SP/me1.jpeg Charles Brown - Make it stand out Whatever it is, the way you tell your story online can make all the difference. http://ultracold.physics.berkeley.edu/retired-experiments daily 0.75 2021-01-07 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1460160891517-FB0DK1NFHW1WBPC66JZM/IMG_4915.JPG Retired Experiments (Copy) http://ultracold.physics.berkeley.edu/e3-cqed-optomechanics daily 0.75 2021-01-07 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1460160554859-9OJG9QU17D0Q1SH3YOD9/2016-04-08+16.30.15.jpg E3: cQED, Optomechanics (Copy) https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459290008734-YF7WYAOKRQFWX8LAUDTS/image-asset.jpeg E3: cQED, Optomechanics (Copy) https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459477499750-27GFHFJH15VIFBKRMGM6/image-asset.jpeg E3: cQED, Optomechanics (Copy) Cross-Section of chip and cavity. Cavity mirrors are separated by 250 μm https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459477536789-946VU4M5D6M7P6TY0YDF/image-asset.gif E3: cQED, Optomechanics (Copy) Schematic of an atom chip on a silicon substrate incorporating a Fabry–Perot cavity. A hole is micromachined in the substrate to allow light occupying the cavity mode to pass through. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459477835589-VGSZ3YEPJ0S9Z5AHZUWP/image-asset.png E3: cQED, Optomechanics (Copy) Conceptual diagram of a spin oscillator interacting with the probe laser. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459477943136-ONNXNBZQAT2GP0CLMIIP/image-asset.jpeg E3: cQED, Optomechanics (Copy) (A) Cavity shift as a function of time as RF is swept across the magnetic resonances of atoms in neighboring lattice sites. (B) Atom density in the lattice, as extracted from the cavity shift profile. (C) Rapid adiabatic passage with no magnetic-field gradient, showing a 14 kHz Rabi frequency. This is much less than the 50 kHz resonance splitting between adjacent wells, giving us 120 nm spatial imaging resolution. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459478002598-S3BKJKEDNCJ8W3HM5X0M/image-asset.png E3: cQED, Optomechanics (Copy) Top: Schematic of atom-probe coupling for different well locations. Atoms (grey points) sit at the bottom of the FORT potential (black dashed line). Since the FORT wavelength is incommensurate with that of the probe, different wells lead to different levels of coupling (green dots on blue curve). Bottom: Experimentally obtained contrast plot highlighting the atom-probe coupling dependence on the location of the atom cloud. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459478064968-Z22ZQOXYRQJMMTNHBW6D/image-asset.jpeg E3: cQED, Optomechanics (Copy) Top: Schematic of a piece of glass inside a cavity leading to a phase shift of the cavity light. Bottom: In our experiments, the trapped ensemble provides the phase shift. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459478136961-Q1R64QL79UJ2WNFRSN9L/image-asset.png E3: cQED, Optomechanics (Copy) Atoms trapped in optical superlattice modulate the probe at distinct frequencies. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459478178126-DRGJEUCY13A2LWQ25VN0/image-asset.png E3: cQED, Optomechanics (Copy) Statistical ensemble of measured states for oscillator 1 (top) and 2 (bottom), without (left) and with (right) coupling and the resulting backction. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1459478266043-NT9MHMIQ168EEH7HWZ3E/squeezePlot.png E3: cQED, Optomechanics (Copy) Power spectral densities of optomechanical response on a full scale (A) and magnified about the region of shot noise (B), in the phase-modulation (PM; red) and amplitude-modulation (AM; blue) quadratures (solid, data; dashed, theory). http://ultracold.physics.berkeley.edu/diego-novoa daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/05e78c74-349d-4ded-946c-fe0d45d58ff9/e8-21.jpg Diego Novoa https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/05e78c74-349d-4ded-946c-fe0d45d58ff9/e8-21.jpg Diego Novoa http://ultracold.physics.berkeley.edu/che-liu daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1610146439454-Q022B4BSHIOJPWUDKSB8/profile.jpg Che Liu https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1610146439454-Q022B4BSHIOJPWUDKSB8/profile.jpg Che Liu http://ultracold.physics.berkeley.edu/shao-wen-chang daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1610147328285-P4XYXK1Q8TZNIU0FIWQ8/low-res+Shao-Wen.jpg Shao-Wen Chang https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1610147328285-P4XYXK1Q8TZNIU0FIWQ8/low-res+Shao-Wen.jpg Shao-Wen Chang http://ultracold.physics.berkeley.edu/eilbott daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/8b53e3f0-f052-46d9-84dc-2854ca0da916/01.jpg Olive Eilbott - 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Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1628536983240-4PM0JJUKARIGTYMRJEQR/lab+photo.jpg Harvey Hu - Make it stand out Whatever it is, the way you tell your story online can make all the difference. http://ultracold.physics.berkeley.edu/atom-scanning daily 0.75 2026-03-13 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1628538666484-KIJU14MBKXZHE2XZN3LP/Screen+Shot+2021-08-09+at+12.50.50+PM.png Atom Scanning - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/1628538666484-KIJU14MBKXZHE2XZN3LP/Screen+Shot+2021-08-09+at+12.50.50+PM.png Atom Scanning - Make it stand out Whatever it is, the way you tell your story online can make all the difference. http://ultracold.physics.berkeley.edu/kevin-mours daily 0.75 2022-01-12 https://images.squarespace-cdn.com/content/v1/56faeba459827e51fccdab15/2016762d-827f-4ae6-b21c-20009e28d86d/IMG_2444+%282%29.JPG Kevin Mours - 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