International Journal of Physics | Vol. 6, No. 10, October 2015 | pp. 73–80
DOI: 10.46882/2015/IJP/000066
Research Article
Title: Squeezed Vacuum State Transport and Photonic Entanglement Dynamics in Disordered Optical Cavity Arrays
Names of Authors: A. M. Ross¹, F. Z. Al-Rawi²
Authors’ Affiliations: ¹Department of Physics, University of Queensland, Brisbane, QLD 4072, Australia; ²Department of Physics, Faculty of Science, University of Baghdad, Baghdad, Iraq
Abstract: Maintaining quantum state correlations across integrated optical networks is crucial for building fault-tolerant quantum computing architectures and secure communication lines. This paper models continuous-wave squeezed vacuum state transport and characterizes photonic entanglement dynamics within a linear array of coupled semiconductor microcavities subjected to spatial Anderson disorder. We solved the quantum stochastic Schrödinger equations using an algebraic operator framework that accounts for localized evanescent coupling variations, cavity mirror losses, and thermal phonon dephasing at 4.2 K. Squeezed vacuum states at 1064.0 nm were injected into the boundary cavity of a 20-channel system. The calculations demonstrate that introducing a 5.0% structural disorder in cavity resonance frequencies induces strong spatial localization of light. This localization reduces the squeezing level in the primary channel from 7.5 dB down to 2.1 dB over a brief 10.0 ps interaction window. To protect the quantum states, we simulated an active phase-modulation feedback sequence. This sequence establishes a synthetic gauge field that suppresses backscattering and locks the relative phase of the local oscillator. The optimized array configuration successfully restored the squeezing level to 6.4 dB at the output port, yielding a state fidelity calculation of 95.1% ± 0.3%.
Keywords: Quantum optics; squeezed states; optical cavities; Anderson localization; entanglement dynamics; integrated photonics
Manuscript Timeline: Received: June 04, 2015; Revised: July 28, 2015; Accepted: August 18, 2015; Published: October 14, 2015
Citation: Ross, A. M., & Al-Rawi, F. Z. (2015). Squeezed Vacuum State Transport and Photonic Entanglement Dynamics in Disordered Optical Cavity Arrays. International Journal of Physics, 6(10), 73–80.
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