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arXiv:2306.13716 · Optica Quantum

Nonlocal phase modulation of multimode, continuous-variable twin beams

Zhifan Zhou, Luı́s E. E. de Araujo, M. T. DiMario, Brian E. Anderson, Jie Zhao, K. M. Jones, Paul D. Lett

Published Nov 28, 2023• 5 citations
arXivHTMLPDF

Abstract

We investigate experimentally the nonlocal phase modulation of multiple-frequency-mode, continuous-variable entangled twin beams. We use a pair of electro-optical phase modulators to modulate the entangled probe and conjugate light beams produced by four-wave mixing in hot rubidium vapor. A single phase modulator in either one of the twin beams reduces the two-mode squeezing signal. The overall quantum entanglement is preserved, however, as the modulator nonlocally distributes the beam correlations among frequency modes of the multimode fields. The two-mode squeezing can be recovered by reversing the mixing with an additional out-of-phase electro-optical phase modulator (EOM) in the other beam.

DOI
10.1364/opticaq.505870

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