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arXiv · 1001.1893

Uniform cross phase modulation for nonclassical radiation pulses

Karl-Peter Marzlin·Zeng-Bin Wang·Sergey A. Moiseev·Barry C. Sanders
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Abstract

We propose a scheme to achieve a uniform cross phase modulation (XPM) for two nonclassical light pulses and study its application for quantum non-demolition measurements of the photon number in a pulse and for controlled phase gates in quantum information. We analyze the scheme by quantizing a common phenomenological model for classical XPM. Our analysis first treats the ideal case of equal cross-phase modulation and pure unitary dynamics. This establishes the groundwork for more complicated studies of non-unitary dynamics and difference in phase shifts between the two pulses where decohering effects severely affect the performance of the scheme.

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Karl-Peter Marzlin, Zeng-Bin Wang, Sergey A. Moiseev, Barry C. Sanders. 2010-01-12. Uniform cross phase modulation for nonclassical radiation pulses. https://doi.org/10.1364/josab.27.000a36

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