Phys. Rev. A 56, 4187–4192 (1997)Robust transmission and reconstruction of fragile optical statesReceived 16 April 1997; published in the issue dated November 1997 We propose a scheme by which signals carried by a coherent optical source close to the quantum noise limit can be amplified, making them more robust against losses, and then reconstructed at a remote site. The amplitude signal-to-noise ratio, the absolute amplitude noise level, and optical coherence are preserved. The scheme utilizes electro-optic feedforward and laser injection locking. We investigate the performance of the scheme as a quantum nondemolition device. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.56.4187
DOI:
10.1103/PhysRevA.56.4187
PACS:
42.50.Lc, 42.55.-f, 42.60.Da
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