Photonic implementation for the topological cluster-state quantum computer

Journal Article · Wed Sep 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.032332· OSTI ID:21448670

Herrera-Marti, David A; Jennings, David; Rudolph, Terry ^[1]; Fowler, Austin G ^[2]

---

1. Institute for Mathematical Sciences, Imperial College London, London SW7 2BW (United Kingdom)
2. Centre for Quantum Computer Technology, University of Melbourne, Victoria (Australia)

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{sup -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.

• OSTI ID: 21448670
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
77 NANOSCIENCE AND NANOTECHNOLOGY
BOSONS
CALCULATION METHODS
COMPUTERS
EFFICIENCY
ELEMENTARY PARTICLES
ERRORS
IMPLEMENTATION
MASSLESS PARTICLES
MATHEMATICS
NANOSTRUCTURES
NONLINEAR PROBLEMS
OPTICS
PHOTONS
PROBABILISTIC ESTIMATION
QUANTUM COMPUTERS
QUANTUM DOTS
QUANTUM ENTANGLEMENT
TOPOLOGY