212 citations · 1.4k across the 17 of their papers we have counts for
17 papers
Observation of a Modulational Instability in Bose-Einstein condensates
P. J. Everitt, M. A. Sooriyabandara, M. Guasoni +10
We observe the breakup dynamics of an elongated cloud of condensed Rb atoms placed in an optical waveguide. The number of localized spatial components observed in the breaku…
A quantum sensor: simultaneous precision gravimetry and magnetic gradiometry with a Bose-Einstein condensate
Kyle S. Hardman, Patrick J. Everitt, Gordon D. McDonald +7
A Bose-Einstein condensate is used as an atomic source for a high precision sensor. A atom F=1 spinor condensate of Rb is released into free fall for up to $7…
Observation of Breathers in an Attractive Bose Gas
Patrick J. Everitt, Mahasen A. Sooriyabandara, Gordon D. McDonald +8
In weakly nonlinear dispersive systems, solitons are spatially localized solutions which propagate without changing shape through a delicate balance between dispersion and self-foc…
Fast machine-learning online optimization of ultra-cold-atom experiments
P. B. Wigley, P. J. Everitt, A. van den Hengel +12
Machine-designed control of complex devices or experiments can discover strategies superior to those developed via simplified models. We describe an online optimization algorithm b…
A Bright Solitonic Matter-Wave Interferometer
Gordon D. McDonald, Carlos C. N. Kuhn, Kyle S. Hardman +6
We present the first realisation of a solitonic atom interferometer. A Bose-Einstein condensate of atoms of rubidium-85 is loaded into a horizontal optical waveguide.…
A Bose-condensed, simultaneous dual species Mach-Zehnder atom interferometer
C. C. N. Kuhn, G. D. McDonald, K. S. Hardman +6
This paper presents the first realisation of a simultaneous Rb -Rb Mach-Zehnder atom interferometer with Bose-condensed atoms. A number of ambitious proposals for pre…
The Role of Source Coherence in Atom Interferometery
Kyle S. Hardman, Carlos C. N. Kuhn, Gordon D. McDonald +4
The role of source cloud spatial coherence in a Mach-Zehnder type atom interferometer is experimentally investigated. The visibility and contrast of a Bose-Einstein condensate (BEC…
Space-Time Area in Atom Interferometry
Gordon D. McDonald, Carlos C. N. Kuhn
It is a commonly stated that the acceleration sensitivity of an atom interferometer is proportional to the space-time area enclosed between the two interfering arms. Here we derive…
A faster scaling in acceleration-sensitive atom interferometers
Gordon D. McDonald, Carlos C. N. Kuhn, Shayne Bennetts +4
Atom interferometers have been used to measure acceleration with at best a scaling in sensitivity as the interferometer time is increased. This limits the sensitivity to…
80hk Momentum Separation with Bloch Oscillations in an Optically Guided Atom Interferometer
Gordon D. McDonald, Carlos C. N. Kuhn, Shayne Bennetts +5
We demonstrate phase sensitivity in a horizontally guided, acceleration-sensitive atom interferometer with a momentum separation of 80hk between its arms. A fringe visibility of 7%…
Optically guided linear Mach Zehnder atom interferometer
G. D. McDonald, H. Keal, P. A. Altin +7
We demonstrate a horizontal, linearly guided Mach Zehnder atom interferometer in an optical waveguide. Intended as a proof-of-principle experiment, the interferometer utilises a Bo…
Precision atomic gravimeter based on Bragg diffraction
P. A. Altin, M. T. Johnsson, V. Negnevitsky +10
We present a precision gravimeter based on coherent Bragg diffraction of freely falling cold atoms. Traditionally, atomic gravimeters have used stimulated Raman transitions to sepa…
11 W narrow linewidth laser source at 780nm for laser cooling and manipulation of Rubidium
S. S. Sané, S. Bennetts, J. E. Debs +5
We present a narrow linewidth continuous laser source with over 11 Watts of output power at 780nm, based on single-pass frequency doubling of an amplified 1560nm fibre laser with 3…
Bosenova and three-body loss in a Rb-85 Bose-Einstein condensate
P. A. Altin, G. R. Dennis, G. D. McDonald +5
Collapsing Bose-Einstein condensates are rich and complex quantum systems for which quantitative explanation by simple models has proved elusive. We present new experimental data o…
Cold atom gravimetry with a Bose-Einstein Condensate
J. E. Debs, P. A. Altin, T. H. Barter +6
We present a cold atom gravimeter operating with a sample of Bose-condensed Rubidium-87 atoms. Using a Mach-Zehnder configuration with the two arms separated by a two-photon Bragg…
Optically trapped atom interferometry using the clock transition of large Rb-87 Bose-Einstein condensates
P. A. Altin, G. McDonald, D. Döring +7
We present a Ramsey-type atom interferometer operating with an optically trapped sample of 10^6 Bose-condensed Rb-87 atoms. The optical trap allows us to couple the |F =1, mF =0>\r…
Quantum projection noise limited interferometry with coherent atoms in a Ramsey type setup
D. Döring, G. McDonald, J. E. Debs +5
Every measurement of the population in an uncorrelated ensemble of two-level systems is limited by what is known as the quantum projection noise limit. Here, we present quantum pro…