Experimental demonstration of teleportation-based programmable quantum gate

Details Experimental demonstration of teleportation-based programmable quantum gate Experimental demonstration of teleportation-based programmable quantum gate

2009-05-25

arxiv.org/abs/0905.4050v1

Physical Review A 79, 050304(R) (2009)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevA.79.050304

We experimentally demonstrate a programmable quantum gate that applies a sign flip operation to data qubit in an arbitrary basis fully specified by the quantum state of a two-qubit program register. Our linear-optical implementation is inspired by teleportation-based schemes for quantum computing and relies on multiphoton interference and coincidence detection. We confirm the programmability of the gate and its high-fidelity performance by carrying out full quantum process tomography of the resulting operation on data qubit for several different programs.

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