Publication

Quantum error correction of continuous-variable states with realistic resources

23/03/2018

Josephine Dias and T. C. Ralph

Phys. Rev. A, 97, 032335 (2018)

Quantum error correction of continuous-variable states with realistic resources

Gaussian noise induced by loss on Gaussian states may be corrected by distributing Einstein-Podolsky-Rosen entanglement through the loss channel, purifying the entanglement using a noiseless linear amplifier (NLA), and then using it for continuous-variable teleportation of the input state. Linear optical implementations of the NLA unavoidably introduce small amounts of excess noise and detection, and source efficiency will be limited in current implementations. In this paper, we analyze the error-correction protocol with nonunit efficiency sources and detectors and show the excess noise may be partially compensated by adjusting the classical gain of the teleportation protocol. We present a strong case for the potential of demonstrable error-correction with current technology.

University: The University of Queensland

Authors Centre Participants: Ms. Josephine Dias, Prof. Tim C Ralph

Source: Physical Review A

Publication Type: Refereed Journal article

DOI Link: DOI Link

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