Universal quantum computation with the Orbital Angular Momentum of a single photon

Details Universal quantum computation with the Orbital Angular Momentum of a single photon Universal quantum computation with the Orbital Angular Momentum of a single photon

2010-06-09

arxiv.org/abs/1006.1862v1

Physics

Quantum Physics

First version. Comments welcome

Scientific paper

We prove that a single photon with quantum data encoded in its orbital angular momentum can be manipulated with simple optical elements to provide any desired quantum computation. We will show how to build any quantum unitary operator using beamsplitters, phase shifters, holograms and an extraction gate based on quantum interrogation. The advantages and challenges of these approach are then discussed, in particular the problem of the readout of the results.

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