Continuous-Variable Quantum State Transfer with Partially Disembodied Transport

Abstract

We propose a new protocol of implementing continuous-variable quantum state transfer using partially disembodied transport. This protocol may improve the fidelity at the expense of the introduction of a semi-quantum channel between the parties, in comparison with quantum teleportation using the same strength of entanglement. Depending on the amount of information destroyed in the measurement, this protocol may be regarded as a teleportation protocol (complete destruction of input state), or as a $1\to M$ cloning protocol (partial destruction), or as a direct transmission (no destruction). This scheme can be straightforwardly implemented with the experimentally accessible setup at present.

4 pages, to appear in Phys. Rev. Lett

References in corpus (8)

• Quantum information with continuous variables
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• High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables
• Quantum benchmark for storage and transmission of coherent states
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Cited by in corpus (10)

• Fidelity approach to quantum phase transitions
• Experimental Preparation of Quadripartite Cluster and GHZ Entangled States for Continuous Variables
• Quantum Cloning Machines and the Applications
• Experimental generation of genuine four-partite entangled states with total three-party correlation for continuous variables
• Deterministic and universal quantum squeezing gate in virtue of teleportation-like protocol
• Continuous-Variable Quantum Cloning of Coherent states with Phase-Conjugate Input Modes Using Linear Optics
• Continuous-Variable Quantum Information Distributor: Reversible Telecloning
• Two-mode excited entangled coherent states and their entanglement properties
• D-concurrence bounds for pair coherent states
• Fast quantum state transfer and entanglement preparation in strongly coupled bosonic systems