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Intracavity weak nonlinear phase shifts with single photon driving |
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| Authors: | WJ Munro GJ Milburn |
| Institution: | a Hewlett-Packard Laboratories, Filton Road, Stoke Gifford, Bristol BS34 8QZ, United Kingdom b National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan c Centre for Quantum Computer Technology, University of Queensland, St. Lucia, Queensland 4072, Australia |
| Abstract: | We investigate a doubly resonant optical cavity containing a Kerr nonlinear medium that couples two modes by a cross phase modulation. One of these modes is driven by a single photon pulsed field, and the other mode is driven by a coherent state. We find an intrinsic phase noise mechanism for the cross phase shift on the coherent beam which can be attributed to the random emission times of single photons from the cavity. An application to a weak nonlinearity phase gate is discussed. |
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