Phys. Rev. A 79, 050304(R) (2009) [4 pages]Experimental demonstration of a teleportation-based programmable quantum gate
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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.79.050304
DOI:
10.1103/PhysRevA.79.050304
PACS:
03.67.Lx, 42.50.Ex
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