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

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 eli...

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Bibliographic Details
Published in:arXiv.org 2015-11
Main Authors: Hickman, G T, Pittman, T B, Franson, J D
Format: Article
Language:English
Subjects:
Alkali metals
Metal vapors
Phase modulation
Quantum computing
Quantum phenomena
Quantum theory
Rare gases
Rubidium
Xenon
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1508.05993