Optical quantum computation using cluster States.

  title={Optical quantum computation using cluster States.},
  author={Michael A. Nielsen},
  journal={Physical review letters},
  volume={93 4},
  • M. Nielsen
  • Published 2 February 2004
  • Physics
  • Physical review letters
We propose an approach to optical quantum computation in which a deterministic entangling quantum gate may be performed using, on average, a few hundred coherently interacting optical elements (beam splitters, phase shifters, single photon sources, and photodetectors with feedforward). This scheme combines ideas from the optical quantum computing proposal of Knill, Laflamme, and Milburn [Nature (London) 409, 46 (2001)]], and the abstract cluster-state model of quantum computation proposed by… 

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  • Rev. A 66, 052306
  • 2002


  • Rev. Lett. 86, 5188
  • 2001


  • Rev. Lett. 91, 037903
  • 2003

Nature (London) 409

  • 46
  • 2001

Nature 409

  • 46
  • 2001

Phys. Rev. A

  • Phys. Rev. A
  • 2002


  • Rev. Lett. 92, 017902
  • 2003


  • Rev. A 68, 042319
  • 2003

Phys. Rev. Lett

  • Phys. Rev. Lett
  • 1997

Nature 402

  • 390
  • 1999