Non-Markovianity-assisted optimal continuous variable quantum teleportation
arXiv:1805.03617
Abstract
We study the continuous-variable (CV) quantum teleportation protocol in the case that one of the two modes of the shared entangled resource is sent to the receiver through a Gaussian Quantum Brownian Motion noisy channel. We show that if the channel is engineered in a non-Markovian regime, the information backflow from the environment induces an extra dependance of the phase of the two-mode squeezing of the shared Gaussian entangled resource on the transit time along the channel of the shared mode sent to the receiver. Optimizing over the non-Markovianity dependent phase of the squeezing yields a significant enhancement of the teleportation fidelity. For short enough channel transit times, essentially unit fidelity is achieved at realistic, finite values of the squeezing amplitude for a sufficiently large degree of the channel non-Markovianity.
arXiv comment9 pages, 4 figures
References in corpus (20)
- Non-Markovian dynamics in open quantum systems
- Teleportation of Quantum States
- Entanglement in continuous variable systems: Recent advances and current perspectives
- Quantum Metrology in Non-Markovian Environments
- Continuous variable quantum teleportation with non-Gaussian resources
- Observation of non-Markovian micro-mechanical Brownian motion
- Enhanced quantum entanglement in the non-Markovian dynamics of biomolecular excitons
- Quantum teleportation on a photonic chip
- Collision-model-based approach to non-Markovian quantum dynamics
- Continuous variable quantum key distribution in non-Markovian channels
- Equivalence between Entanglement and the Optimal Fidelity of Continuous Variable Teleportation
- Continuous-variable teleportation in the characteristic-function description
- Lindblad and non--Lindblad type dynamics of a quantum Brownian particle
- Continuous variable entanglement dynamics in structured reservoirs
- Optimal control for non-Markovian open quantum systems
- Efficient superdense coding in the presence of non-Markovian noise
- Non-Markovianity of Gaussian Channels
- Optimal fidelity of teleportation with continuous-variable using three-tunable parameters in realistic environment
- Gaussian interferometric power as a measure of continuous variable non-Markovianity
- Exact non-Markovian dynamics of Gaussian quantum channels: Finite-time and asymptotic regimes