Quantum computation with linear optics

Details Quantum computation with linear optics Quantum computation with linear optics

1998-06-14

arxiv.org/abs/quant-ph/9806048v1

Physics

Quantum Physics

LaTeX with llncs.cls, 11 pages with 5 postscript figures, Proc. of 1st NASA Workshop on Quantum Computation and Quantum Commun

Scientific paper

We present a constructive method to translate small quantum circuits into their optical analogues, using linear components of present-day quantum optics technology only. These optical circuits perform precisely the computation that the quantum circuits are designed for, and can thus be used to test the performance of quantum algorithms. The method relies on the representation of several quantum bits by a single photon, and on the implementation of universal quantum gates using simple optical components (beam splitters, phase shifters, etc.). The optical implementation of Brassard et al.'s teleportation circuit, a non-trivial 3-bit quantum computation, is presented as an illustration.

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