Professor Christopher Foot: Publications

Centralized design and production of the ultra-high vacuum and laser-stabilization systems for the AION ultra-cold strontium laboratories

AVS Quantum Science American Vacuum Society 6:1 (2024) 014409

Authors:

B Stray, O Ennis, S Hedges, S Dey, M Langlois, K Bongs, S Lellouch, M Holynski, B Bostwick, J Chen, Z Eyler, V Gibson, TL Harte, CC Hsu, M Karzazi, J Mitchell, N Mouelle, U Schneider, Y Tang, K Tkalcec, Y Zhi, K Clarke, A Vick, K Bridges, J Coleman, G Elertas, L Hawkins, S Hindley, K Hussain, C Metelko, H Throssell, CFA Baynham, O Buchmüller, D Evans, R Hobson, L Iannizzotto-Venezze, A Josset, E Pasatembou, BE Sauer, MR Tarbutt, L Badurina, A Beniwal, D Blas, J Carlton, J Ellis, C McCabe, E Bentine, M Booth, D Bortoletto, C Foot, CM Gómez-Monedero Castellanos, T Hird, K Hughes, A James, A Lowe, J March-Russell, J Schelfhout, I Shipsey, D Weatherill, D Wood, S Balashov, MG Bason, J Boehm, M Courthold, M van der Grinten, P Majewski, AL Marchant, D Newbold, Z Pan, Z Tam, T Valenzuela, I Wilmut

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Universal scaling of the dynamic BKT transition in quenched 2D Bose gases

Science American Association for the Advancement of Science 382:6669 (2023) 443-447

Authors:

Shinichi Sunami, Vijay Singh, David Garrick, Abel Beregi, Adam Barker, Kathrin Luksch, Elliot Bentine, Ludwig Mathey, Christopher Foot

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Progress Towards a Compact Cold-Atom Microwave Clock

Institute of Electrical and Electronics Engineers (IEEE) 00 (2023) 1-3

Authors:

Martin Knapp, Sam Walby, Mohsin Haji, Chris Foot, Patrick Gill

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Universal Scaling of the Dynamic BKT Transition in Quenched 2D Bose Gases

(2022)

Authors:

Shinichi Sunami, Vijay P Singh, David Garrick, Abel Beregi, Adam J Barker, Kathrin Luksch, Elliot Bentine, Ludwig Mathey, Christopher J Foot

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Observation of the Berezinskii-Kosterlitz-Thouless transition in a two-dimensional Bose gas via matter-wave interferometry

Physical Review Letters American Physical Society 128:25 (2022) 250402

Authors:

S Sunami, Vp Singh, D Garrick, A Beregi, Aj Barker, K Luksch, E Bentine, L Mathey, Cj Foot

Abstract:

We probe local phase fluctuations of trapped two-dimensional (2D) Bose gases using matter-wave interferometry. This enables us to measure the phase correlation function, which changes from an algebraic to an exponential decay when the system crosses the Berezinskii-Kosterlitz-Thouless (BKT) transition. We determine the temperature dependence of the BKT exponent η and find the critical value ηc = 0.17(3) for our trapped system. Furthermore, we measure the local vortex density as a function of the local phase-space density, which shows a scale-invariant behaviour across the transition. Our experimental investigation is supported by Monte Carlo simulations and provides a comprehensive understanding of the BKT transition in a trapped system.

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Professor Christopher Foot

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Centralized design and production of the ultra-high vacuum and laser-stabilization systems for the AION ultra-cold strontium laboratories

Authors:

Universal scaling of the dynamic BKT transition in quenched 2D Bose gases

Authors:

Progress Towards a Compact Cold-Atom Microwave Clock

Authors:

Universal Scaling of the Dynamic BKT Transition in Quenched 2D Bose Gases

Authors:

Observation of the Berezinskii-Kosterlitz-Thouless transition in a two-dimensional Bose gas via matter-wave interferometry

Authors:

Abstract:

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Professor Christopher Foot

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Centralized design and production of the ultra-high vacuum and laser-stabilization systems for the AION ultra-cold strontium laboratories

Authors:

Universal scaling of the dynamic BKT transition in quenched 2D Bose gases

Authors:

Progress Towards a Compact Cold-Atom Microwave Clock

Authors:

Universal Scaling of the Dynamic BKT Transition in Quenched 2D Bose Gases

Authors:

Observation of the Berezinskii-Kosterlitz-Thouless transition in a two-dimensional Bose gas via matter-wave interferometry

Authors:

Abstract: