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Momentum correlations as signature of sonic Hawking radiation in Bose-Einstein condensates
by A. Fabbri, N. Pavloff
- Published as SciPost Phys. 4, 019 (2018)
|As Contributors:||Alessandro Fabbri · Nicolas Pavloff|
|Submitted by:||Pavloff, Nicolas|
|Submitted to:||SciPost Physics|
|Subject area:||Quantum Physics|
We study the two-body momentum correlation signal in a quasi one dimensional Bose-Einstein condensate in the presence of a sonic horizon. We identify the relevant correlation lines in momentum space and compute the intensity of the corresponding signal. We consider a set of different experimental procedures and identify the specific issues of each measuring process. We show that some inter-channel correlations, in particular the Hawking quantum-partner one, are particularly well adapted for witnessing quantum non-separability, being resilient to the effects of temperature and/or quantum quenches.
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Published as SciPost Phys. 4, 019 (2018)
List of changes
Besides the point already discussed in the reply to the referee's comments we added some references, corrected typos and added a new subsection label for clarity