Advantage of Coherent States in Ring Resonators over Any Quantum Probe Single-Pass Absorption Estimation Strategy.
Phys Rev Lett
; 128(23): 230501, 2022 Jun 10.
Article
em En
| MEDLINE
| ID: mdl-35749187
ABSTRACT
Quantum states of light have been shown to enhance precision in absorption estimation over classical strategies. By exploiting interference and resonant enhancement effects, we show that coherent-state probes in all-pass ring resonators can outperform any quantum probe single-pass strategy even when normalized by the mean input photon number. We also find that under optimal conditions coherent-state probes equal the performance of arbitrarily bright pure single-mode squeezed probes in all-pass ring resonators.
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01-internacional
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MEDLINE
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En
Ano de publicação:
2022
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Article