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Conference Paper

QPSK Receiver outperforming the Standard Quantum Limit for any Signal Power

MPS-Authors
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Mueller,  Christian R.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs,  Gerd
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Marquardt,  Christoph
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Mueller, C. R., Leuchs, G., & Marquardt, C. (2014). QPSK Receiver outperforming the Standard Quantum Limit for any Signal Power. 2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO).


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-66A9-8
Abstract
We present a quantum receiver for the discrimination of quadrature phase-shift keyed signals that approaches the Helstrom bound for any signal power. The discrimination is performed via adaptive displacements prior to a single photon detector. (C) 2014 Optical Society of America