Increasing entanglement between Gaussian states by coherent photon subtraction

Abstract

We experimentally demonstrate that the entanglement between Gaussian entangled states can be increased by non-Gaussian operations. Coherent subtraction of single photons from Gaussian quadrature-entangled light pulses, created by a non-degenerate parametric amplifier, produces delocalized states with negative Wigner functions and complex structures, more entangled than the initial states in terms of negativity. The experimental results are in very good agreement with the theoretical predictions.

References in corpus (22)

• A computable measure of entanglement
• Concentrating Partial Entanglement by Local Operations
• Quantum state reconstruction of the single-photon Fock state
• Generation of a superposition of odd photon number states for quantum information networks
• On the impossibility of distilling Gaussian states with Gaussian operations
• The characterization of Gaussian operations and Distillation of Gaussian States
• Continuous-variable teleportation improvement by photon subtraction via conditional measurement
• Gaussian transformations and distillation of entangled Gaussian states
• Proposal for a loophole-free Bell test using homodyne detection
• Iterative maximum-likelihood reconstruction in quantum homodyne tomography
• Teleportation improvement by inconclusive photon subtraction
• Entanglement evaluation of non-Gaussian states generated by photon subtraction from squeezed states
• Quantum homodyne tomography of a two-photon Fock state
• Proposed Test of Quantum Nonlocality for Continuous Variables
• Entanglement purification of Gaussian continuous variable quantum states
• Tomographic reconstruction of the single-photon Fock state by high-frequency homodyne detection
• Iterative algorithm for reconstruction of entangled states
• Homodyne tomography characterization and nonlocality of a dual-mode optical qubit
• Distillation of continuous-variable entanglement with optical means
• Time-resolved homodyne characterization of individual quadrature-entangled pulses
• Tomographic test of Bell's inequality for a time-delocalized single photon
• Quantum nonlocality obtained from local states by entanglement purification

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