Imperial College London
Alternate

ProfessorRupertOulton

Faculty of Natural Sciences, Department of Physics

Professor of Nanophotonics
 
 
 
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Contact

 

+44 (0)20 7594 7576r.oulton

 
 
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Location

 

914Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kinsler:2022:1367-2630/ac97b9,
author = {Kinsler, P and McCall, MW and Oulton, RF and Clark, AS},
doi = {1367-2630/ac97b9},
journal = {New Journal of Physics},
pages = {1--14},
title = {The surprising persistence of time-dependent quantum entanglement},
url = {http://dx.doi.org/10.1088/1367-2630/ac97b9},
volume = {24},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The mismatch between elegant theoretical models and the detailed experimental reality is particularly pronounced in quantum nonlinear interferometry (QNI). In stark contrast to theory, experiments contain pump beams that start in impure states and that are depleted, quantum noise that affects—and drives—any otherwise gradual build up of the signal and idler fields, and nonlinear materials that are far from ideal and have a complicated time-dependent dispersive response. Notably, we would normally expect group velocity mismatches to destroy any possibility of measurable or visible entanglement, even though it remains intact—the mismatches change the relative timings of induced signal–idler entanglements, thus generating 'which path' information. Using an approach based on the positive-P representation, which is ideally suited to such problems, we are able to keep detailed track of the time-domain entanglement crucial for QNI. This allows us to show that entanglement can be—and is—recoverable despite the obscuring effects of real-world complications; and that recovery is attributable to an implicit time-averaging present in the detection process.
AU  - Kinsler,P
AU  - McCall,MW
AU  - Oulton,RF
AU  - Clark,AS
DO  - 1367-2630/ac97b9
EP  - 14
PY  - 2022///
SN  - 1367-2630
SP  - 1
TI  - The surprising persistence of time-dependent quantum entanglement
T2  - New Journal of Physics
UR  - http://dx.doi.org/10.1088/1367-2630/ac97b9
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000876709200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://iopscience.iop.org/article/10.1088/1367-2630/ac97b9
UR  - http://hdl.handle.net/10044/1/100853
VL  - 24
ER  -
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