期刊
PHYSICAL REVIEW A
卷 82, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.82.032332
关键词
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资金
- Engineering and Physical Sciences Research Council
- Engineering and Physical Sciences Research Council [EP/G016828/1] Funding Source: researchfish
- EPSRC [EP/G016828/1] Funding Source: UKRI
An implementation of the topological cluster-state quantum computer is suggested, in which the basic elements are linear optics, measurements, and a two-dimensional array of quantum dots. This overcomes the need for nonlinear devices to create a lattice of entangled photons. Whereas the thresholds found for computational errors are quite satisfactory (above 10(-3)), the estimates of the minimum efficiencies needed for the detectors and quantum dots are beyond current technology's reach. This is because we rely heavily on probabilistic entangling gates, which introduces loss into the scheme irrespective of detector and quantum-dot efficiencies.
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