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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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Removal of a single photon by adaptive absorption

Calsamiglia, John and Barnett, Stephen M. and Lütkenhaus, Norbert and Suominen, Kalle-Antti (2001) Removal of a single photon by adaptive absorption. Physical Review A, 64 (4). 043814-1. ISSN 1094-1622

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Abstract

We present a method to remove, using only linear optics, exactly one photon from a field mode. This is achieved by putting the system in contact with an absorbing environment, which is under continuous monitoring. A feedback mechanism then decouples the system from the environment as soon as the first photon is absorbed. We propose a possible scheme to implement this process and provide the theoretical tools to describe it.