Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:1007.0100 · Annals of Physics

Decoherence effects in Bose–Einstein condensate interferometry I. General theory

Bryan J. Dalton

Published Nov 10, 2010• 5 citations
arXivHTMLPDF
DOI
10.1016/j.aop.2010.10.006

Related papers

Atomic Interaction Effects in Precision Bose-Einstein Condensate Interferometry

Alan O. Jamison, J. Nathan Kutz, V. V. Ivanov +4 more

Bulletin of the American Physical Society•Jun 17, 2011•0 citations

Theory of decoherence in Bose-Einstein condensate interferometry

Bryan J. Dalton

A full treatment of decoherence and dephasing effects in BEC interferometry has been developed based on using quantum correlation functions for treating interferometric effects. The BEC is described via a phase space distribution functional of the Wigner type for the condensate modes and the positive P type for the non-condensate modes. Ito equations for stochastic condensate and non-condensate field functions replace the functional Fokker-Planck equation for the distribution functional and stochastic averages of field function products determine the quantum correlation functions.

arXiv:quant-ph/0702024•Journal of Physics Conference Series•May 1, 2007•4 citations

Coherence properties of Bose-Einstein condensates

WORLD SCIENTIFIC eBooks•Sep 1, 2011•1 citation

Decoherence Dynamics in Interferometry with One-Dimensional Bose-Einstein Condensates

Thorsten Schumm, Sebastian Hofferberth, Jörg Schmiedmayer

We perform interferometry with one-dimensional Bose-Einstein condensates in a double well potential. Using dressed adiabatic potentials on an atomchip, we dynamically split BECs, imposing a macroscopic coherence on the system. Fluctuations of the order parameter are revealed as local shifts in the interference pattern and allow a quantization of the decoherence process with time. For the uncoupled system we ultimately recover individual phase fluctuating condensates, whereas finite tunnel coupling counteracts the decoherence and leads to an equilibrium characterized by a finite coherence length. Decoherence decay and equilibrium coherence lengths are used to determine temperature and coupling strength of the system.

Quantum-Atom Optics Downunder (QAO)•Jan 1, 2007•0 citations

Coherence and decoherence of excitations in a trapped Bose-Einstein condensate

Eitan E. Rowen

•Jan 1, 2008•0 citations

Atom Interferometry with a Weakly Interacting Bose Einstein Condensate

M. Fattori, Chiara D’Errico, G. Roati +5 more

We demonstrate trapped atom interferometry with a weakly interacting Bose Einstein condensate. Atomic scattering length is tuned almost to zero by means of a broad magnetic Feshbach resonance and interaction induced decoherence results strongly suppressed.

Frontiers in Optics•Jan 1, 2008•4 citations
A full treatment of decoherence and dephasing effects in BEC interferometry has been developed based on using quantum correlation functions for treating interferometric effects. The BEC is described via a phase space distribution functional of the Wigner type for the condensate modes and the positive P type for the non-condensate modes. Ito equations for stochastic condensate and non-condensate field functions replace the functional Fokker-Planck equation for the distribution functional and stochastic averages of field function products determine the quantum correlation functions.
We perform interferometry with one-dimensional Bose-Einstein condensates in a double well potential. Using dressed adiabatic potentials on an atomchip, we dynamically split BECs, imposing a macroscopic coherence on the system. Fluctuations of the order parameter are revealed as local shifts in the interference pattern and allow a quantization of the decoherence process with time. For the uncoupled system we ultimately recover individual phase fluctuating condensates, whereas finite tunnel coupling counteracts the decoherence and leads to an equilibrium characterized by a finite coherence length. Decoherence decay and equilibrium coherence lengths are used to determine temperature and coupling strength of the system.