Experimental demonstration of quantum source coding

Y. Mitsumori, J.A. Vaccaro, S.M. Barnett, E. Andersson, A. Hasegawa, M. Takeoka, M. Sasaki

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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.
Original languageEnglish
Number of pages5
JournalPhysical Review Letters
Issue number21
Publication statusPublished - 19 Nov 2003


  • quantum source coding
  • photons
  • quantum physics
  • photonics
  • optics

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