Manipulating the direction of Einstein-Podolsky-Rosen steering

Abstract

Einstein-Podolsky-Rosen (EPR) steering exhibits an inherent asymmetric feature that differs from both entanglement and Bell nonlocality, which leads to one-way EPR steering. Although this one-way EPR steering phenomenon has been experimentally observed, the schemes to manipulate the direction of EPR steering have not been investigated thoroughly. In this paper, we propose and experimentally demonstrate three schemes to manipulate the direction of EPR steering, either by varying the noise on one party of a two-mode squeezed state (TMSS) or transmitting the TMSS in a noisy channel. The dependence of the direction of EPR steering on the noise and transmission efficiency in the quantum channel is analyzed. The experimental results show that the direction of EPR steering of the TMSS can be changed in the presented schemes. Our work is helpful in understanding the fundamental asymmetry of quantum nonlocality and has potential applications in future asymmetric quantum information processing.

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• Deterministic distribution of multipartite entanglement and steering in a quantum network by separable states
• Manipulation and enhancement of asymmetric steering via interference effects induced by closed-loop coupling
• Controlled asymmetry of EPR steering with an injected non-degenerate optical parametric oscillator
• Improving the bidirectional steerability between two accelerated partners via filtering process
• Deterministic distribution of orbital angular momentum multiplexed continuous-variable entanglement and quantum steering
• Geometry of quantum evolution in a nonequilibrium environment
• Steering-based randomness certification with squeezed states and homodyne measurements
• Coupled three-mode squeezed vacuum: Gaussian steering and remote generation of Wigner negativity
• Quantum entanglement and Einstein-Podolsky-Rosen steering in ultrastrongly light-matter coupled system
• Sudden death and revival of Gaussian Einstein-Podolsky-Rosen steering in noisy channels