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arXiv:2405.13265 · Physical Review A

Homodyne detection is optimal for quantum interferometry with path-entangled coherent states

Z. M. McIntyre, W. A. Coish

Published Jul 29, 2024• 4 citations
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Abstract

The authors propose the use of homodyne detection to detect phase shifts and show that this method is optimal for path-entangled coherent states. This is notable because homodyne measurements do not require photon counting, and the resulting sensitivity is independent of the value of the phase shift itself.
DOI
10.1103/physreva.110.l010602

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