Quantum Energy Teleportation with a Linear Harmonic Chain

Details Quantum Energy Teleportation with a Linear Harmonic Chain Quantum Energy Teleportation with a Linear Harmonic Chain

2010-07-14

arxiv.org/abs/1007.2234v2

Physics

Quantum Physics

23 pages, 10 figures, analysis for non-critical case is added, accepted for publication in PRA

Scientific paper

A protocol of quantum energy teleportation is proposed for a one-dimensional harmonic chain. A coherent-state POVM measurement is performed to coupled oscillators of the chain in the ground state accompanied by energy infusion to the system. This measurement consumes a part of ground state entanglement. Depending on the measurement result, a displacement operation is performed on a distant oscillator accompanied by energy extraction from the zero-point fluctuation of the oscillator. We find that the amount of consumed entanglement is bounded from below by a positive value that is proportional to the amount of teleported energy.

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