Classical and quantum information processing with EIT

Raymond G. Beausoleil; Sean D. Barrett; Pieter Kok; Kae Nemoto; William J. Munro; Timothy P. Spiller

doi:10.1117/12.601718

4 April 2005 Classical and quantum information processing with EIT

Raymond G. Beausoleil, Sean D. Barrett, Pieter Kok, Kae Nemoto, William J. Munro, Timothy P. Spiller

Proceedings Volume 5735, Advanced Optical and Quantum Memories and Computing II; (2005) https://doi.org/10.1117/12.601718
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

We review our work on electromagnetically induced transparency (EIT) as a potentially key enabling science for few-qubit Quantum Information Technology (QIT). EIT systems capable of providing two-qubit phase shifts as large as pi are possible in a condensed matter system such as NV-diamond, but the potentially large residual absorption necessarily arising under this condition significantly reduces the fidelity of a nonlinear optical gate based on EIT. Instead, we emphasize that a universal set of quantum gates can be constructed using EIT systems that provide cumulative phase shifts (and residual absorptions) that are much smaller than unity. We describe a single-photon quantum nondemolition detector and a two-photon parity gate as basic elements of a nonlinear optical quantum information processing system.

Citation Download Citation

Raymond G. Beausoleil, Sean D. Barrett, Pieter Kok, Kae Nemoto, William J. Munro, and Timothy P. Spiller "Classical and quantum information processing with EIT", Proc. SPIE 5735, Advanced Optical and Quantum Memories and Computing II, (4 April 2005); https://doi.org/10.1117/12.601718

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