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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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Experimental demonstration of quantum source coding

Mitsumori, Y. and Vaccaro, J.A. and Barnett, S.M. and Andersson, E. and Hasegawa, A. and Takeoka, M. and Sasaki, M. (2003) Experimental demonstration of quantum source coding. Physical Review Letters, 91 (21). pp. 217902-1. ISSN 0031-9007

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Abstract

We report an experimental demonstration of Schumacher's quantum noiseless coding theorem. Our experiment employs a sequence of single photons, each of which represents three qubits in terms of eight spatial and polarization modes. We initially prepare each photon in one of a set of eight nonorthogonal code word states corresponding to the value of a block of three binary letters. We use quantum coding to compress this quantum data into a two-qubit quantum channel and then uncompress the two-qubit channel to restore the original data with a fidelity approaching the theoretical limit.