An all optical quantum memory based on quantum error correction

Robert M. Gingrich, Pieter Kok, Hwang Lee, Farrokh Vatan, and Jonathan P. Dowling

Physical Review Letters 91, 217901 (2003)


When photons are sent through a fiber as part of a quantum communication protocol, the error that is most difficult to correct is photon loss. Here, we propose and analyze a two-to-four qubit encoding scheme, which can recover the loss of one qubit in the transmission. This device acts as a repeater when it is placed in series to cover a distance larger than the attenuation length of the fiber, and it acts as an optical quantum memory when it is inserted in a fiber loop. We call this dual-purpose device a ``quantum transponder.''

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© 2020 Pieter Kok

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