Quantum computation with classical light: The Deutsch Algorithm
Physics Letters, Section A: General, Atomic and Solid State Physics, Volume 379, No. 28-29, Article 23196, Year 2015
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Abstract We present an implementation of the Deutsch Algorithm using linear optical elements and laser light. We encoded two quantum bits in form of superpositions of electromagnetic fields in two degrees of freedom of the beam: its polarisation and orbital angular momentum. Our approach, based on a Sagnac interferometer, offers outstanding stability and demonstrates that optical quantum computation is possible using classical states of light.