Steady-state squeezing and entanglement in a dissipatively coupled NOPO network
Yoshitaka Inui, Yoshihisa Yamamoto
TL;DR
This paper studies how dissipative coupling in a network of nondegenerate optical parametric oscillators (NOPOs) can produce steady-state photon squeezing and entanglement, with potential applications in quantum information processing.
Contribution
It demonstrates that dissipative coupling can generate steady-state entanglement and squeezing in NOPO networks, extending understanding of quantum correlations in such systems.
Findings
Two dissipatively coupled NOPOs satisfy Hillery-Zubairy's entanglement criterion.
Entanglement occurs when pumping is far above threshold and coupling exceeds cavity loss.
Photon-number squeezing is achieved in the steady state.
Abstract
We investigate the steady-state photon-number squeezing and quantum entanglement in a network of nondegenerate optical parametric oscillators (NOPOs). We treat each NOPO with Shen's Raman laser model, whose lasing mode provides a photon-number-squeezed state. Two dissipatively coupled NOPOs satisfy Hillery-Zubairy's entanglement criterion if they are pumped far above the threshold and the dissipative coupling is sufficiently larger than the NOPO cavity loss.
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Taxonomy
TopicsQuantum optics and atomic interactions · Quantum Information and Cryptography · Photonic and Optical Devices