Enhancing Continuous Variable Quantum Teleportation using Non-Gaussian Resources

Abstract

Continuous Variable (CV) non-Gaussian resources are fundamental in the realization of quantum error correction for CV-based quantum communications and CV-based computing. In this work, we investigate the use of CV non-Gaussian states as quantum teleportation resource states in the context of the transmission of coherent and squeezed states through noisy channels. We consider an array of different non-Gaussian resource states, and compute the fidelity of state teleportation achieved for each resource. Our results show that the use of non-Gaussian states presents a significant advantage compared to the traditional resource adopted for CV teleportation; the Gaussian two-mode squeezed vacuum state. In fiber-based quantum communications, the range of quantum teleportation is increased by approximately 40% via the use of certain non-Gaussian states. In satellite-to-ground quantum communications, for aperture configurations consistent with the Micius satellite, the viable range of quantum teleportation is increased from 700 km to over 1200 km. These results represent a significant increase in the performance of pragmatic and realizable quantum communications in both terrestrial and space-based networks.

Accepted for publication in 2021 IEEE GLOBECOM

References in corpus (19)

• Advances in Quantum Cryptography
• Satellite-to-ground quantum key distribution
• Long-Distance Continuous-Variable Quantum Key Distribution over 202.81 km of Fiber
• Continuous variable quantum teleportation with non-Gaussian resources
• Satellite-Based Continuous-Variable Quantum Communications: State-of-the-Art and a Predictive Outlook
• Feasibility of satellite-to-ground continuous-variable quantum key distribution
• Continuous-variable quantum teleportation with non-Gaussian entangled states generated via multiple-photon subtraction and addition
• Continuous-variable teleportation in the characteristic-function description
• Quantum repeater for continuous variable entanglement distribution
• Long-distance continuous-variable quantum key distribution with quantum scissors
• Free-space continuous-variable quantum key distribution of unidimensional Gaussian modulation using polarized coherent-states in urban environment
• Continuous-variable quantum repeater based on quantum scissors and mode multiplexing
• Squeezing the limit: Quantum benchmarks for the teleportation and storage of squeezed states
• Teleportation of squeezing: Optimization using non-Gaussian resources
• Feasibility Assessment For Practical Continuous Variable Quantum Key Distribution Over The Satellite-to-Earth Channel
• Continuous-variable entanglement distillation over a pure loss channel with multiple quantum scissors
• Multi-mode CV-QKD with Non-Gaussian Operations
• Improving QKD for Entangled States with Low Squeezing via Non-Gaussian Operations
• Photonic Engineering for CV-QKD over Earth-Satellite Channels