Photon pair generation in a lossy microring resonator. II. Entanglement in the output mixed Gaussian squeezed state
arXiv:1708.01338 · doi:10.1103/PhysRevA.96.033848
Abstract
In this work we examine the entanglement of the output signal-idler squeezed vacuum state in the Heisenberg picture as a function of the coupling and internal propagation loss parameters of a microring resonator. Using the log-negativity as a measure of entanglement for a mixed Gaussian state, we examine the competitive effects of the transfer matrix that encodes the classical phenomenological loss, as well as the matrix that that incorporates the coupling and internal propagation loss due to the quantum Langevin noise fields required to preserve unitarity of the composite system,(signal-idler) and environment (noise) structure.
arXiv comment21 pages, 9 figures. This is Part-II of a two-part series (see arXiv:1705.09227v2 for Part-I, Theory). Part-I and Part-II were both originally submitted as one paper to the arxiv as arXiv:1705.09227v1. Part-I and Part-II have both been accepted for publication (31Jul2017) in Physical Review A
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- Enhanced Hong-Ou-Mandel Manifolds and figures of merit for linear chains of identical micro-ring resonators