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Darkness of two-mode squeezed light in ?-type atomic system

Abstract:
We show that, under certain circumstances, an optical field in a two-mode squeezed vacuum (TMSV) state can propagate through a lossy atomic medium without degradation or evolution. Moreover, the losses give rise to that state when a different state is initially injected into the medium. Such a situation emerges in a Λ-type atomic system, in which both optical transitions are driven by strong laser fields that are two-photon resonant with the respective signal modes. Then the interactions of the two signal modes with the ground-state atomic coherence interfere destructively, thereby ensuring the preservation of the TMSV with a particular squeezing parameter. This mechanism permits unified interpretation of recent experimental results and predicts new phenomena.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1367-2630/ab5fac

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Oxford college:
Keble College
Role:
Author


Publisher:
IOP Publishing
Journal:
New Journal of Physics More from this journal
Volume:
22
Issue:
1
Article number:
13014
Publication date:
2020-01-14
Acceptance date:
2019-12-06
DOI:
EISSN:
1367-2630
ISSN:
1367-2630


Language:
English
Keywords:
Pubs id:
1084974
Local pid:
pubs:1084974
Deposit date:
2020-05-15

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