Fault-tolerant linear optics quantum computation by error-detecting quantum state transfer

Details Fault-tolerant linear optics quantum computation by error-detecting quantum state transfer Fault-tolerant linear optics quantum computation by error-detecting quantum state transfer

2006-12-11

arxiv.org/abs/quant-ph/0612073v3

Phys. Rev. A 76, 042311 (2007)

Physics

Quantum Physics

9 pages, 7 figures

Scientific paper

10.1103/PhysRevA.76.042311

A scheme for linear optical implementation of fault-tolerant quantum computation is proposed, which is based on an error-detecting code. Each computational step is mediated by transfer of quantum information into an ancilla system embedding error-detection capability. Photons are assumed to be subjected to both photon loss and depolarization, and the threshold region of their strengths for scalable quantum computation is obtained, together with the amount of physical resources consumed. Compared to currently known results, the present scheme reduces the resource requirement, while yielding a comparable threshold region.

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