Publications

2024

A single-photon large-momentum-transfer atom interferometry scheme for Sr or Yb atoms with application to determining the fine-structure constant
J. S. Schelfhout, T. M. Hird, K. M. Hughes, C. J. Foot
Phys. Rev. A 110, 053309 (2024) arXiv:2403.10225

Observation of a Bilayer Superfluid with Interlayer Coherence
E. Rydow, V. P. Singh, A. Beregi, E. Chang, L. Mathey, C. J. Foot, S. Sunami
arXiv:2410.22326

CNN-Based Vortex Detection in Atomic 2D Bose Gases in the Presence of a Phononic Background
M. Sesodia, S. Sunami, E. Chang, E. Rydow, C. J. Foot, A. Beregi
arXiv:2410.13829

Quantum Simulations with Bilayer 2D Bose Gases in Multiple-RF-dressed Potentials
A. Beregi, C. J. Foot, S. Sunami
AVS Quantum Science 6, 3(2024) arXiv:2406.04080

Detecting Phase Coherence of 2D Bose Gases via Noise Correlations
S. Sunami, V. P. Singh, E. Rydow, A. Beregi, E. Chang, L. Mathey, C. J. Foot
arXiv:2406.03491

2023

Universal Scaling of the Dynamic BKT Transition in Quenched 2D Bose Gases
S. Sunami, V. P. Singh, D. Garrick, A. Beregi, A. J. Barker, K. Luksch, E. Bentine, L. Mathey, C. J. Foot
Science 382, 443 (2023) arXiv:2209.13587

see also:
Department of Physics press release Scaling perspective on a 2-D quantum gas
University of Hamburg press release Critical behavior helps to classify dynamic phase transitions

Centralised Design and Production of the Ultra-High Vacuum and Laser-Stabilisation Systems for the AION Ultra-Cold Strontium Laboratories
B. Stray et al.
arXiv:2305.20060

Perspective on Quantum Bubbles in Microgravity
Nathan Lundblad et al.
Quantum Sci. Technol. 8 024003 (2023), arXiv:2211.04804

2022

Observation of the BKT Transition in a 2D Bose Gas via Matter-Wave Interferometry
S. Sunami, V. P. Singh, D. Garrick, A. Beregi, A. J. Barker, K. Luksch, E. Bentine, L. Mathey, C. J. Foot
Phys. Rev. Lett. 128, 250402 (2022) arXiv:2108.08840

Schrödinger cat states of a macroscopic charged particle co-trapped with an ion
S. Leontica, C. J. Foot
Phys. Rev. A 105, 033109 (2022)

Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map
I. Alonso et al.
EPJ Quantum Technol. 9, 30 (2022) arXiv:2201.07789

2021

AtomECS: Simulate laser cooling and magneto-optical traps
X. Chen, M. Zeuner, U. Schneider, C. J. Foot, T. L. Harte, E. Bentine
arXiv:2105.06447

Faraday imaging induced squeezing of a double-well Bose-Einstein condensate
E. O. Ilo-Okeke, S. Sunami, C. J. Foot, T. Byrnes
Phys. Rev. A 104, 053324 (2021) arXiv:2104.02382

Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS-100)
Mahiro Abe et al.
Quantum Science and Technology 6, 044003 (2021)

High-flux, adjustable, compact cold-atom source
S. Ravenhall, B. Yuen, C. J. Foot
Opt. Express 29, 21143 (2021)

2020

Coherent splitting of two-dimensional Bose gases in magnetic potentials
A. J. Barker, S. Sunami, D. Garrick, A. Beregi, K. Luksch, E. Bentine and C. J. Foot
New J. Phys. 22 103040 (2020), arXiv:2006.06661

Inelastic collisions in radiofrequency-dressed mixtures of ultracold atoms
E. Bentine, A. J. Barker, K. Luksch, S. Sunami, T. L. Harte, B. Yuen, C. J. Foot, D. J. Owens, J. M. Hutson
Phys. Rev. Research 2, 033163 (2020), arXiv:1912.02737

Applying machine learning optimization methods to the production of a quantum gas
A. J. Barker, H. Style, K. Luksch, S. Sunami, D. Garrick, F. Hill, C. J. Foot and E. Bentine
Mach. Learn.: Sci. Technol. 1 015007 (2020), arXiv:1908.08495

Realising a species-selective double well with multiple-radiofrequency-dressed potentials
A. J. Barker, S. Sunami, D. Garrick, A. Beregi, K. Luksch, E. Bentine and C. J. Foot
J. Phys. B: At. Mol. Opt. Phys. 53 155001 (2020), arXiv:2003.05925

AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space
Y. A. El-Neaj et al.
EPJ Quantum Technol. 7, 6 (2020), arXiv:1908.00802

2019

Probing multiple-frequency atom-photon interactions with ultracold atoms
K. Luksch, E. Bentine, A. J. Barker, S. Sunami, T. L. Harte, B. Yuen and C. J. Foot
New J. Phys. 21 073067 (2019), arXiv:1812.05545

Multi-Frequency Atom-Photon Interactions
B. Yuen and C. J. Foot
arXiv:1907.01469

(py)LIon: A package for simulating trapped ion trajectories
E. Bentine, C. J. Foot and D. Trypogeorgos
arXiv:1907.10514

AION: An Atom Interferometer Observatory and Network
L. Badurina et al.
arXiv:1911.11755

2018

Two-frequency operation of a Paul trap to optimise confinement of two species of ions
C. J. Foot, D. Trypogeorgos, E. Bentine, A. Gardner and M. Keller
Int. J. Mass Spectrom. 430 240 (2018), arXiv:1801.00424

Ultracold atoms in multiple-radiofrequency dressed adiabatic potentials
T. L. Harte, E. Bentine, K. Luksch, A. J. Barker, D. Trypogeorgos, B. Yuen and C. J. Foot
Phys. Rev. A 97 013616 (2017), arXiv:1706.01491

2017

Species-selective confinement of atoms dressed with multiple radiofrequencies
E. Bentine, T. L. Harte, K. Luksch, A. J. Barker, J. Mur-Petit, B. Yuen and C. J. Foot
J. Phys. B: At. Mol. Opt. Phys. 50 094002 (2017), arXiv:1701.05819

2016

Hubbard Model for Atomic Impurities Bound by the Vortex Lattice of a Rotating Bose-Einstein Condensate
T. H. Johnson, Y. Yuan, W. Bao, S. R. Clark, C. Foot and D. Jaksch
Phys. Rev. L 116 240402 (2016), arXiv:1512.09334

Cotrapping different species in ion traps using multiple radiofrequencies
C. J. Foot and D. Trypogeorgos
Phys. Rev. A 94 023609 (2016), arXiv:1310.6294

2014

Design of a millimetre-scale magnetic surface trap for cold atoms
D. Trypogeorgos, S. D. Albright, D. Beesley and C. J. Foot
J. Phys. B: At. Mol. Opt. Phys. 47 075302 (2014), arXiv:1311.0250

Expand All

2010-2013

Precise shaping of laser light by an acousto-optic deflector
D. Trypogeorgos, T. Harte, A. Bonnin and C. J. Foot
Optics Express, Vol. 21, Issue 21, pp. 24837-24846 (2013)

Bose gas: Theory and Experiment
A. L. Fetter and C. J. Foot
arXiv:1203.3183

Techniques to cool and rotate Bose-Einstein condensated in time-averaged adiabatic potentials
M. Gildemeister, B. E. Sherlock and C. J. Foot
Phys. Rev. A 85, 053401 (2012)

Capturing long range correlations in two-dimensional quantum lattice systems using correlator product states
S. Al-Assam, S. R. Clark, C. J. Foot and D. Jaksch
arXiv:1107:0936

Time-averaged adiabatic ring potential for ultracold atoms
B. E. Sherlock, M. Gildemeister, E. Owen, E. Nugent and C. J. Foot
Phys. Rev. A 83, 043408 (2011)

Ultracold Atoms in an Optical Lattice with Dynamically Variable Periodicity
S. Al-Assam, R. A. Williams and C. J. Foot
Phys. Rev. A 82, 021604(R) (2010)

Observation of vortex nucleation in a rotating two-dimensional lattice of Bose-Einstein condensates
R. A. Williams, S. Al-Assam and C. J. Foot
Phys. Rev. Lett 104, 050404 (2010)

Trapping Ultracold Atoms in a Time-Averaged Adiabatic Potential
M. Gildemeister, E. Nugent, B. E. Sherlock, M. Kubasik, B. T. Sheard and C. J. Foot
Phys. Rev. A 81, 031402(R) (2010)

2005-2009

Light Scattering for Thermometry of Fermionic Atoms in an Optical Lattice
J. Ruostekoski, C. J. Foot and A. B. Deb
Phys. Rev. Lett 103, 170404 (2009)

Enhancement of on-site interactions of tunneling ultracold atoms in optical potentials using radio-frequency dressing
M. Shotter, D. Trypogeorgos and C. J. Foot
Phys. Rev. A 78, 051602 (2008)

Dynamic optical lattices: two-dimensional rotating and accordion lattices for ultracold atoms
R. A. Williams, J. D. Pillet, S. Al-Assam, B. Fletcher, M. Shotter and C. J. Foot
Optics Express 16, 16977-16983 (2008)

A ring trap for ultracold atoms in an RF-dressed state
W. H. Heathcote, E. Nugent, B. T. Sheard and C. J. Foot
New J. Phys. 10, 043012 (2008)

A method of state-selective transfer of atoms between microtraps based on the Franck-Condon principle
A. B. Deb, G. Smirne, R. M. Godun and C. J. Foot
J. Phys. B 40, 4131-4142 (2007)

Collisional relaxation of Feshbach molecules and three-body recombination in 87Rb Bose-Einstein condensates
G. Smirne, R. M. Godun, D. Cassettari, V. Boyer, C. J. Foot, T. Volz, N. Syassen, S. Duerr, G. Rempe, M. D. Lee, K. Goral and T. Koehler
Phys. Rev. A 75, 020702(R) (2007)

Dynamic Manipulation of Bose-Einstein Condensates with a Spatial Light Modulator
V. Boyer, R. M. Godun, G. Smirne, D. Cassettari, C. M. Chandrashekar, A. B. Deb, Z. J. Laczik and C. J. Foot
Phys. Rev. A 73, 031402 (2006)

Tunnelling dynamics of a Bose-Einstein condensate in a four-well loop-shaped system
S. de Liberato and C. J. Foot
Phys. Rev. A 73, 035602 (2006)

Quasi-2D confinement of a BEC in a combined optical and magnetic potential
N. Smith, W. Heathcote, G. Hechenblaikner, E. Nugent and C. J. Foot
J. Phys. B: 38, 223 (2005)

Properties of quasi-two-dimensional condensates in highly anisotropic traps
G. Hechenblaikner, J. M. Krueger and C. J. Foot
Phys. Rev. A 71, 013604 (2005)

2000-2004

Experimental observation of the tilting mode of an array of vortices in a dilute Bose-Einstein Condensate
N. Smith, W. Heathcote, J. Krueger and C. J. Foot
Phys. Rev. Lett. 93, 080406 (2004)

Optimized evaporative cooling using a dimple potential: an efficient route to Bose-Einstein condensation
Z. Ma, C. J. Foot and S. L. Cornish
J. Phys. B 37, 3187 (2004)

Dynamic optical trap generation using FLC SLMs for the manipulation of cold atoms
V. Boyer, C.Chandrashekar, Z. Laczik and C. J. Foot
J. Modern Optics 51, 2235 (2004)

Experimental observation of a superfluid gyroscope
E. Hodby, S. Hopkins, G. Hechenblaikner and C. J. Foot
Phys. Rev. Lett. 91, 090403 (2003)

Strong evaporative cooling towards Bose-Einstein condensation of a magnetically trapped caesium gas
A. M. Thomas, S. Hopkins S. L. Cornish and C. J. Foot
J. Optics B 5, S107 (2003)

The evaporative cooling of a gas of caesium atoms in the hydrodynamic regime
Z. Ma, A. M. Thomas, C. J. Foot and S. L. Cornish
J. Phys. B 36, 3533 (2003)

Direct observation of irrotational flow and evidence of superfluidity in a rotating Bose-Einstein condensate
G. Hechenblaikner, E. Hodby, S. A. Hopkins, O. M. Marago and C. J. Foot
Phys. Rev. Lett. 88, 070406 (2002)

Double-well magnetic trap for Bose-Einstein condensates
N. R. Thomas, C. J. Foot and A. C. Wilson
Phys. Rev. A. 65, 063406 (2002)

Calculation of mode coupling for quadrupole excitations in a Bose-Einstein condensate
G. Hechenblaikner, S. A. Morgan, E. Hodby, O. M. Marago and C. J. Foot
Phys. Rev. A 65, 033612 (2002)

The moment of inertia and the scissors mode of a Bose-condensed gas
O. M. Marago, G. Hechenblaikner, E. Hodby, S. A. Hopkins and C. J. Foot
J. Phys. C. 14, 343 (2002)

Vortex nucleation in Bose-Einstein condensates in an oblate, purely magnetic potential
E. Hodby, G. Hechenblaikner. S. A. Hopkins, O. M. Maragò and C. J. Foot
Phys. Rev. Lett. 88, 010405 (2002)

Temperature dependence of damping and frequency shifts of the scissors mode of a trapped Bose-Einstein condensate
O. Marago, G. Hechenblaikner, E. Hodby and C. J. Foot
Phys. Rev. Lett. 86, 3938 (2001)

Experimental observation of Beliaev coupling in a Bose-Einstein condensate
E. Hodby, O. Marago, G. Hechenblaikner and C. J. Foot
Phys. Rev. Lett. 86, 2196 (2001)

Dipole force trapping of caesium atoms
S. A. Webster, G. Hechenblaikner, S. Hopkins, J. Arlt and C. J. Foot
J. Phys. B 33, 4149 (2000)

Observation of harmonic generation and nonlinear coupling in the collective dynamics of a Bose-Einstein condensate
G. Hechenblaikner, O. Marago, E. Hodby, J. Arlt, S. Hopkins and C. J. Foot
Phys. Rev. Lett. 85, 692 (2000)

Measurement of elastic cross section for cold cesium collisions
S. Hopkins, S. Webster, J. Arlt, P. Bance, S. Cornish, O. Marago & C. J. Foot
Phys. Rev. A 61, 2707 (2000)

Bose-Einstein condensation in a stiff TOP trap with adjustable geometry
E. Hodby, G. Hechenblaikner, O. M. Marago, J. Arlt, S. Hopkins, C. J. Foot
J. Phys. B 33, 4087 (2000)

Observation of the scissors mode and evidence for superfluidity of a trapped Bose-Einstein condensed gas
O. Marago, S. Hopkins, J. Arlt, E. Hodby, G. Hechenblaikner & C. J. Foot
Phys. Rev. Lett. 84, 2056 (2000)

Earlier publications

Bose-Einstein Condensation in a rotating anisotropic TOP trap
J. Arlt, E. Hodby, O. Marago, S. Hopkins, S.Webster and C. J. Foot
J. Phys. B 32, 5861 (1999)

Limits of the separated-path Ramsey atom interferometer
R. Godun, C. Webb, M. d'Arcy, P. Featonby, M. Oberthaler, C. J. Foot, G. Summy and K. Burnett
J. Phys. B 32, 5033 (1999)

Measurement of Berry's phase using an atom interferometer
C. Webb, R. Godun, G. Summy, M. Oberthaler, P. Featonby, C. J. Foot and K. Burnett
Phys. Rev. A 60, R1783 (1999)

Ultracold collisions for Bose-Einstein condensation
L. S. Butcher, D. N. Stacey, C. J. Foot and K. Burnett
Philos. Trans. R. Soc. Lond. Ser. A 357, 1421 (1999)

A pyramidal magneto-optical trap as a source of slow atoms
J. Arlt, O. Marago, S. Webster, S. Hopkins & C. J. Foot
Opt. Comm. 157, 303 (1998)

Separated-path Ramsey interferometer
P. Featonby, G. Summy, C. Webb, R. Godun, M. Oberthaler, A. Wilson, C. J. Foot and K. Burnett
Phys. Rev. Lett. 81, 495 (1998)

Atomic dipole trap formed by blue detuned strong Gaussian standing wave
P. Zemanek and C. J. Foot
Opt. Comm. 146, 119 (1998)

Suppression of collisional loss from a magnetic trap
J. Arlt, P. Bance, S. Hopkins, J. Martin, S. Webster, A. Wilson, K. Zetie and C. J. Foot
J. Phys. B 31, L321 (1998)

Observation of light induced coherence loss in a caesium atomic fountain
P. Featonby, C. Webb, G. Summy, C. J. Foot and K. Burnett
J. Phys. B 31, 375 (1998)

Dynamics of evaporative cooling for Bose-Einstein condensation
H. Wu, E. Arimondo and C. J. Foot
Phys. Rev. A 56, 560 (1997)

Pulsed sub-recoil laser cooling of atoms
H. Wu, E. Arimondo and C. J. Foot
Quantum & Semiclassical Optics 8, 983 (1996)

Adiabatic transfer for atomic interferometry
P. Featonby, G. Summy, J. Martin, H. Wu, K. Zetie, C. J. Foot and K. Burnett
Phys. Rev. A 53, 373 (1996)

Calculation of the efficiencies and phase-shifts associated with an adiabatic transfer atom interferometer
G. Morigi, P. Featonby, G. Summy, C. J. Foot
Quantum & Semiclassical Optics 8, 641 (1996)

Direct simulation of evaporative cooling
H. Wu and C.J. Foot
J. Phys. B 29, L321 (1996)

High-density trapping of cesium atoms in a dark magneto-optical trap
C. G. Townsend, N. H. Edwards, K. P. Zetie, C. J. Cooper, J. Rink and C. J. Foot
Phys. Rev. A 53, 1702 (1996)

Phase-space density in the magneto-optical trap
C. G. Townsend, N. H. Edwards, C. J. Cooper, K. Zetie, C. J. Foot, A. M. Steane, P. Szriftgiser, H. Perrin and J. Dalibard
Phys. Rev. A 52, 1423 (1995)

Quantum jump calculations of VSCPT in one and two dimensions
H. Wu, M. J. Holland and C. J. Foot
J. Phys. B 28, 5025 (1995)

Force-assisted velocity selective coherent population trapping
H. Wu, G. Hillenbrand and C. J. Foot
J. Phys. B 28, 5269 (1995)

The effect of scattered radiation on sub-Doppler cooling
G. Hillenbrand, C. J. Foot and K. Burnett
Phys. Rev. A 52, 4763 (1994)

Heating due to long-range photon exchange interactions between cold atoms
G. Hillenbrand, C. J. Foot and K. Burnett
Phys. Rev. A 50, 1479 (1994)

Velocity distribution for laser cooled atoms in a one-dimensional +- - configuration
H. Wu & C. J. Foot
J. Phys. B 27, L677 (1994)

Optical elements for interferometry with atoms with J>1
C. J. Foot, H. Wu, E. Arimondo and G. Morigi
J. de Phys. II 4, 1913 (1994)

The temperature of atoms in a magneto-optical trap
C. J. Cooper, G. Hillenbrand, J. Rink, C. G. Townsend, K. Zetie and C. J. Foot
Europhys. Lett. 28, 397 (1994)

Polarization gradient cooling in a one-dimensional +- - configuration for any atomic transition
A. M. Steane, G. Hillenbrand and C. J. Foot
J. Phys. B 25, 4721 (1992)

Radiation force in the magneto-optical trap
A. M. Steane, M. Chowdhury and C. J. Foot
J. Opt. Soc. Am. B 9, 2142 (1992)