Phys. Rev. A 73, 062312 (2006) [6 pages]Error models for mode mismatch in linear optics quantum computingReceived 1 February 2006; published 9 June 2006 One of the most significant challenges facing the development of linear optics quantum computing (LOQC) is mode mismatch, whereby photon distinguishability is introduced within circuits, undermining quantum interference effects. We examine the effects of mode mismatch on the parity (or fusion) gate, the fundamental building block in several recent LOQC schemes. We derive simple error models for the effects of mode mismatch on its operation, and relate these error models to current fault-tolerant-threshold estimates. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.73.062312
DOI:
10.1103/PhysRevA.73.062312
PACS:
03.67.Lx, 42.50.−p
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