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Robust Spin Squeezing via Photon-Mediated Interactions on an Optical Clock Transition

Cavity QED is a promising avenue for the deterministic generation of entangled and spin-squeezed states for quantum metrology. One archetypal scheme generates squeezing via collective one-axis twisting interactions. However, we show that in implementations using optical transitions in long-lived ato...

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Bibliographic Details
Published in:Physical review letters 2018-08, Vol.121 (7), p.070403-070403, Article 070403
Main Authors: Lewis-Swan, Robert J, Norcia, Matthew A, Cline, Julia R K, Thompson, James K, Rey, Ana Maria
Format: Article
Language:English
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Summary:Cavity QED is a promising avenue for the deterministic generation of entangled and spin-squeezed states for quantum metrology. One archetypal scheme generates squeezing via collective one-axis twisting interactions. However, we show that in implementations using optical transitions in long-lived atoms the achievable squeezing is fundamentally limited by collectively enhanced emission into the cavity mode which is generated in parallel with the cavity-mediated spin-spin interactions. We propose an alternative scheme which generates a squeezed state that is protected from collective emission, and investigate its sensitivity to realistic sources of experimental noise and imperfections.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.121.070403