Entanglement of Gaussian states using beam splitter

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.

6 pages, 3 figures, references added (particularly [19]), more detailed discussions

References in corpus (23)

• Separability Criterion for Density Matrices
• A computable measure of entanglement
• Quantum information with continuous variables
• Separability of Mixed States: Necessary and Sufficient Conditions
• Peres-Horodecki separability criterion for continuous variable systems
• Inseparability criterion for continuous variable systems
• Teleportation of Quantum States
• Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement
• Dense Coding for Continuous Variables
• Bound entangled Gaussian states
• Quantum information with Gaussian states
• A computable measure of nonclassicality for light
• The entangling power of passive optical elements
• A theorem for the beam splitter entangler
• Purity of Gaussian states: measurement schemes and time-evolution in noisy channels
• How to share a continuous-variable quantum secret by optical interferometry
• Entanglement conditions for two-mode states: Applications
• Entanglement and visibility at the output of a Mach-Zehnder interferometer
• Entanglement criteria via the uncertainty relations in su(2) and su(1,1) algebra: detection of non-Gaussian entangled states
• Uncertainty inequalities as entanglement criteria for negative partial-transpose states
• Entanglement Detection Based on Interference and Particle Counting
• Entanglement condition via su(2) and su(1,1) algebra using Schr{ö}dinger-Robertson uncertainty relation
• Complete conditions for legitimate Wigner distributions

Cited by in corpus (28)

• Conservation relation of nonclassicality and entanglement for Gaussian states in a beam-splitter
• Mixing nonclassical pure states in a linear-optical network almost always generates modal entanglement
• Revealing nonclassicality beyond Gaussian states via a single marginal distribution
• Transfer information remotely via noise entangled coherent channels
• Fidelity matters: the birth of entanglement in the interference of Gaussian states
• Communication via entangled coherent quantum network
• Process output nonclassicality and nonclassicality depth of quantum-optical channels
• Demonstrating nonclassicality and non-Gaussianity of single-mode fields: Bell-type tests using generalized phase-space distributions
• Many-particle entanglement criterion for superradiant-like states
• How squeezed states both maximize and minimize the same notion of quantumness
• Deterministic nonclassicality for quantum mechanical oscillators in thermal states
• Quantum-optical channels that output only classical states
• Multiphoton Bell-type inequality: a tool to unearth nonlocality of continuous variable quantum optical systems
• Verifying single-mode nonclassicality beyond negativity in phase space
• Quantitative Study of Beam Splitter Generated Entanglement from Input States with Multiple Nonclassicality Inducing Operations
• Nonclassical states that generate zero entanglement with a beam splitter
• A Local Area Quantum Teleportation Network Based on an Array of Electrically Activated Graphene Waveguide
• Quantifications for multi-mode entanglement
• Non-Hermitian engineering for brighter broadband pseudothermal light
• Evolution of two-mode quantum states under a dissipative environment: which quantum resource survives better, squeezing or entanglement?
• Surviving Entanglement in Optic-Microwave Conversion by Electro-Optomechanical System
• Broadband pseudothermal states with tunable spectral coherence generated via nonlinear optics
• Anatomy of entanglement and nonclassicality criteria
• Nonclassicality and entanglement for wavepackets
• Creation and localization of entanglement in a simple configuration of coupled harmonic oscillators
• Correlation based entanglement criteria for bipartite systems
• Entanglement, loss, and quantumness: When balanced beam splitters are best
• Distribution of Gaussian Entanglement in Linear Optical Systems