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arXiv · 1508.05993

Low-Power Cross-Phase Modulation in a Metastable Xenon-Filled Cavity for Quantum Information Applications

G. T. Hickman·T. B. Pittman·J. D. Franson
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Abstract

Weak single-photon nonlinearities have many potential applications in quantum computing and quantum information. Here we demonstrate a relatively simple system for producing low-power cross-phase modulation using metastable xenon inside a high finesse cavity. The use of a noble gas such as xenon eliminates the contamination of the high-finesse mirrors that can occur when using alkali metal vapors such as rubidium. Cross-phase shifts of 5 mrad with 4.5 fJ control pulses were demonstrated. Numerical solutions of the master equation are in good agreement with the experimental results, and they predict that cross-phase shifts greater than 1 mrad per control photon should be achievable by reducing the size of the cavity.

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G. T. Hickman, T. B. Pittman, J. D. Franson. 2015-11-25. Low-Power Cross-Phase Modulation in a Metastable Xenon-Filled Cavity for Quantum Information Applications. https://doi.org/10.1103/physreva.92.053808

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