title: All linear optical quantum memory based on quantum error correction.
abstract: 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."
authors.affiliation: Quantum Computing Technologies Group, Section 367, California Institute of Technology, MS 126-347, 4800 Oak Grove Drive, California 91109-8099, USA.
authors.forename: Robert M
authors.initials: RM
authors.lastname: Gingrich
authors.forename: Pieter
authors.initials: P
authors.lastname: Kok
authors.forename: Hwang
authors.initials: H
authors.lastname: Lee
authors.forename: Farrokh
authors.initials: F
authors.lastname: Vatan
authors.forename: Jonathan P
authors.initials: JP
authors.lastname: Dowling