Procrustean entanglement concentration of continuous variable states of light

Abstract

We propose a Procrustean entanglement concentration scheme for continuous variable states inspired by the scheme proposed in Fiurasek et. al. Phys. Rev. A 67, 022304, (2003). We show that the eight-port homodyne measurement of Fiurasek et. al. Phys. Rev. A 67, 022304, (2003) can be replaced by a balanced homodyne measurement with the advantage of providing a success criterion that allows Alice and Bob to determine if entanglement concentration was achieved. In addition, it facilitates a straightforward and feasible experimental implementation.

6 pages, 3 figures; Typos corrected, References added and conclusion extended, Accepted for publication in Physical Review A

References in corpus (12)

• Quantum information with continuous variables
• Inseparability criterion for continuous variable systems
• On the impossibility of distilling Gaussian states with Gaussian operations
• Characterizing Entanglement
• Entanglement in Quantum Information Theory
• Entanglement purification of Gaussian continuous variable quantum states
• Driving non-Gaussian to Gaussian states with linear optics
• Gaussian states in continuous variable quantum information
• Distillation of continuous-variable entanglement with optical means
• Measurement-induced Nonlinearity in Linear Optics
• Entanglement concentration of continuous variable quantum states
• Validation of entanglement purification by continuous variable polarization

Cited by in corpus (8)

• Two photons co- and counter-propagating through $N$ cross-Kerr sites
• Enhancing quantum correlations and entanglement in an optomechanical system via cross-Kerr nonlinearity
• Highly non-Gaussian states created via cross-Kerr nonlinearity
• Cross-Kerr interaction in a four-level atomic system
• Entanglement concentration and purification of two-mode squeezed microwave photons in circuit QED
• Weak Values and Continuous-Variable Entanglement Concentration
• Weak Measurements with Entangled Probes
• Entanglement Concentration for two atomic ensembles using an effective atom-light beamsplitter