Probabilistic cloning of coherent states without a phase reference

Mueller CR, Wittmann C, Marek P, Filip R, Marquardt C, Leuchs G, Andersen UL (2012)

Publication Type: Journal article

Publication year: 2012

Journal

Physical Review A - Atomic, Molecular, and Optical Physics American Physical Society

Book Volume: 86

Article Number: 010305

Journal Issue: 1

DOI: 10.1103/PhysRevA.86.010305

Abstract

We present a probabilistic cloning scheme operating independently of any phase reference. The scheme is based solely on a phase-randomized displacement and photon counting, omitting the need for nonclassical resources and nonlinear materials. In an experimental implementation, we employ the scheme to clone coherent states from a phase covariant alphabet and demonstrate that the cloner is capable of outperforming the hitherto best-performing deterministic scheme. An analysis of the covariances between the output states shows that uncorrelated clones can be approached asymptotically. This simultaneously demonstrates how the effect of loss on coherent states can be compensated via noiseless preamplification. © 2012 American Physical Society.

Authors with CRIS profile

Christoph Marquardt Institut für Optik, Information und Photonik Gerhard Leuchs

Involved external institutions

Palacky University Olomouc / Univerzita Palackého v Olomouci CZ Czech Republic (CZ) Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Mueller, C.R., Wittmann, C., Marek, P., Filip, R., Marquardt, C., Leuchs, G., & Andersen, U.L. (2012). Probabilistic cloning of coherent states without a phase reference. Physical Review A - Atomic, Molecular, and Optical Physics, 86(1). https://doi.org/10.1103/PhysRevA.86.010305

MLA:

Mueller, Christian R., et al. "Probabilistic cloning of coherent states without a phase reference." Physical Review A - Atomic, Molecular, and Optical Physics 86.1 (2012).

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