Certification of high-dimensional entanglement and Einstein-Podolsky-Rosen steering with cold atomic quantum memory

Abstract

The advent of structured, high-dimensional entangled states brings new possibilities for quantum imaging, information processing and quantum key distribution. We experimentally generate and characterize a spatially entangled state stored in a quantum memory system, using entropic EPR-steering inequality, yielding genuine violation of $1.06\pm 0.15$ bits and certifying entanglement of formation of at least $0.70\pm 0.15$ ebits. The supremacy of the entropic witness is demonstrated for a wide class of experimentally available states, giving prospects for EPR-steering applications in noisy systems or with lossy quantum channels.

7 pages, 6 figures (with Supplemental Material)

References in corpus (15)

• Steering, Entanglement, Nonlocality, and the EPR Paradox
• Quantification of Gaussian quantum steering
• Imaging high-dimensional spatial entanglement with a camera
• Continuous-variable quantum cryptography is secure against non-gaussian attacks
• Quantum memory for entangled two-mode squeezed states
• Quantifying photonic high-dimensional entanglement
• Einstein-Podolsky-Rosen paradox in twin images
• Wavevector multiplexed quantum memory via spatially-resolved single-photon detection
• On Secure Quantum Key Distribution Using Continuous Variables of Single Photons
• Measuring Qutrit-Qutrit Entanglement of Orbital Angular Momentum States of an Atomic Ensemble and a Photon
• Einstein-Podolsky-Rosen Entanglement of Narrowband Photons from Cold Atoms
• Quantifying high-dimensional entanglement with Einstein-Podolsky-Rosen correlations
• Time domain Einstein-Podolsky-Rosen correlation
• Einstein-Podolsky-Rosen paradox in a hybrid bipartite system
• Orbital Angular Momentum embedded Einstein Podolsky Rosen Entanglement Generated from Cold Atoms

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• Massively-multiplexed generation of Bell-type entanglement using a quantum memory
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• Spatial spin-wave modulator for quantum memory assisted adaptive measurements
• Engineering asymmetric steady-state Einstein-Podolsky-Rosen steering in macroscopic hybrid systems
• Real-time ghost imaging of Bell-nonlocal entanglement between a photon and a quantum memory
• Transient dynamics of nonlinear magneto-optical rotation in the presence of transverse magnetic field
• Mesoscopic and macroscopic quantum correlations in photonic, atomic and optomechanical systems
• Spectrum-to-position mapping via programmable spatial dispersion implemented in an optical quantum memory
• Certifying spatial entanglement between non-degenerate photon pairs with a camera
• Superradiant parametric conversion of spin waves
• Measurement-device-independent Schmidt number certification of all entangled states