Sudden death and revival of Gaussian Einstein-Podolsky-Rosen steering in noisy channels
arXiv:2105.06065
Abstract
Einstein-Podolsky-Rosen (EPR) steering is a useful resource for secure quantum information tasks. It is crucial to investigate the effect of inevitable loss and noise in quantum channels on EPR steering. We analyze and experimentally demonstrate the influence of purity of quantum states and excess noise on Gaussian EPR steering by distributing a two-mode squeezed state through lossy and noisy channels, respectively. We show that the impurity of state never leads to sudden death of Gaussian EPR steering, but the noise in quantum channel can. Then we revive the disappeared Gaussian EPR steering by establishing a correlated noisy channel. Different from entanglement, the sudden death and revival of Gaussian EPR steering are directional. Our result confirms that EPR steering criteria proposed by Reid and I. Kogias et al. are equivalent in our case. The presented results pave way for asymmetric quantum information processing exploiting Gaussian EPR steering in noisy environment.
References in corpus (19)
- Steering, Entanglement, Nonlocality, and the EPR Paradox
- Sudden Death of Entanglement
- Entanglement in continuous variable systems: Recent advances and current perspectives
- Experimental criteria for steering and the Einstein-Podolsky-Rosen paradox
- Einstein-Podolsky-Rosen steering provides the advantage in entanglement-assisted subchannel discrimination with one-way measurements
- Quantification of Gaussian quantum steering
- Observation of one-way Einstein-Podolsky-Rosen steering
- Multipartite Einstein-Podolsky-Rosen steering and genuine tripartite entanglement with optical networks
- Experimental demonstration of three-color entanglement
- Genuine High-Order Einstein-Podolsky-Rosen Steering
- Measurement-Based Noiseless Linear Amplification for Quantum Communication
- Avoiding entanglement sudden-death via measurement feedback control in a quantum network
- Robustness of bipartite Gaussian entangled beams propagating in lossy channels
- Many-body quantum dynamics of polarisation squeezing in optical fibre
- Sudden vanishing and reappearance of nonclassical effects: General occurrence of finite-time decays and periodic vanishings of nonclassicality and entanglement witnesses
- Manipulating the direction of Einstein-Podolsky-Rosen steering
- Deterministic distribution of multipartite entanglement and steering in a quantum network by separable states
- Remote generation of Wigner-negativity through Einstein-Podolsky-Rosen steering
- Distillation of Gaussian Einstein-Podolsky-Rosen steering with noiseless linear amplification