Quantum cloning with a broadband optical amplifier

Bing Qi; Li Qian; Hoi-Kwong Lo

doi:10.1364/OAA.2006.OWA6

Optical Amplifiers and Their Applications/Coherent Optical Technologies and Applications
OSA Technical Digest (CD) (Optica Publishing Group, 2006),
paper OWA6
•https://doi.org/10.1364/OAA.2006.OWA6

Quantum cloning with a broadband optical amplifier

Bing Qi, Li Qian, and Hoi-Kwong Lo

Optical Amplifiers and Their Applications 2006

Whistler Canada
25–28 June 2006
ISBN: 1-55752-809-8

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Optical Parametric Amplifiers (OWA)

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B. Qi, L. Qian, and H. Lo, "Quantum cloning with a broadband optical amplifier," in Optical Amplifiers and Their Applications/Coherent Optical Technologies and Applications, OSA Technical Digest (CD) (Optica Publishing Group, 2006), paper OWA6.

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Abstract

We study the quantum cloning fidelity of a broadband optical amplifier followed by optimal filters. Counter-intuitively, when the average input photon number is below one, such system is no better than a random cloning machine.

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