Entanglement of Gaussian states using a beam splitter

2008/10/31 by Rabia Tahira, Manzoor Ikram, Hyunchul Nha +1 · 3 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph

paper · pdf · doi:10.1103/physreva.79.023816

published as Phys. Rev. A 79, 023816 (2009) · 6 pages, 3 figures, references added (particularly [19]), more detailed discussions

arxiv created 2008/11/17 · openalex publication_date 2009/02/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study an experimental scheme to generate Gaussian two-mode entangled states via beam splitter. Specifically, we consider a nonclassical Gaussian state (squeezed state) and a thermal state as two input modes, and evaluate the degree of entanglement at the output. Experimental conditions to generate entangled outputs are completely identified and the critical thermal noise to destroy entanglement is analytically obtained. By doing so, we discuss the possibility to link the resistance to noise in entanglement generation with the degree of single-mode nonclassicality.

Citations

• Purity of Gaussian states: Measurement schemes and time evolution in noisy channels
• Separability Criterion for Density Matrices
• Entanglement detection based on interference and particle counting
• How to share a continuous-variable quantum secret by optical interferometry
• Computable Measure of Nonclassicality for Light
• Equivalence of Semiclassical and Quantum Mechanical Descriptions of Statistical Light Beams

Cited by

• Creation and localization of entanglement in a simple configuration of coupled harmonic oscillators
• Conservation relation of nonclassicality and entanglement for Gaussian states in a beam splitter
• Verifying single-mode nonclassicality beyond negativity in phase space