Broadcasting of continuous variable entanglement

Abstract

We present a scheme for broadcasting of continuous variable entanglement. We show how an initial two-mode squeezed state of the electromagnetic field shared by two distant parties can be broadcasted into two nonlocal bipartite entangled states. Our protocol uses a local linear amplifier and a beam splitter at each end. We compute the fidelity of the output entangled states and show that the broadcasting can be implemented for a variety of input squeezed states and amplifier phases.

4 pages, 2 eps figures, RevTex

References in corpus (25)

• Quantum information with continuous variables
• Peres-Horodecki separability criterion for continuous variable systems
• Inseparability criterion for continuous variable systems
• Entanglement in continuous variable systems: Recent advances and current perspectives
• Noncommuting mixed states cannot be broadcast
• Bound entangled Gaussian states
• Universal cloning of continuous quantum variables
• Optimal cloning of coherent states with a linear amplifier and beam splitters
• Detecting multimode entanglement by symplectic uncertainty relations
• Multimode uncertainty relations and separability of continuous variable states
• Optical implementation of continuous-variable quantum cloning machines
• Broadcasting of entanglement via local copying
• Experimental Demonstration of Continuous Variable Cloning with Phase-Conjugate Inputs
• Cloning of Gaussian states by linear optics
• Phase-Conjugated Inputs Quantum Cloning Machines
• Continuous variable cloning via network of parametric gates
• Broadcasting of entanglement and universal quantum cloners
• Continuous-Variable Quantum Cloning of Coherent states with Phase-Conjugate Input Modes Using Linear Optics
• Continuous-Variable Quantum Information Distributor: Reversible Telecloning
• Accumulation of entanglement in a continuous variable memory
• Broadcasting of three qubit entanglement via local copying and entanglement swapping
• Broadcasting of Inseparability
• Superbroadcasting of continuous variables mixed states
• Erasable and unerasable correlations
• The Quantum Cocktail Party

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• Quantum Cloning Machines and the Applications
• Swapping path-spin intraparticle entanglement onto spin-spin interparticle entanglement
• Information transfer using a single particle path-spin hybrid entangled state
• Complementarity between Tripartite Quantum Correlation and Bipartite Bell Inequality Violation in Three Qubit States
• Quantum entanglement in a non-commutative system
• Broadcasting of Quantum Correlations: Possibilities & Impossibilities
• Efficient detection of nonclassicality using moments of the Wigner function
• Probing Kirkwood-Dirac nonpositivity and its operational implications via moments
• Secret Broadcasting of W-type state
• Secretly Broadcasting Five Qubit Entangled state among three parties from W- type states
• Nonlocality in Continuous-Variable Quantum Networks