Photon-loss-tolerant Zeno controlled-SIGN gate

Journal Article · Tue May 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.052339· OSTI ID:20982508

Myers, Casey R ^[1]; Gilchrist, Alexei ^[2]

---

1. Department of Physics and Astronomy, Institute for Quantum Computing, University of Waterloo, Ontario, Canada N2L 3G1 (Canada)
2. Centre for Quantum Computer Technology, Department of Physics, University of Queensland, QLD 4072 Brisbane (Australia)

We model an optical implementation of a controlled-SIGN gate that makes use of the quantum Zeno effect [Franson et al., Phys. Rev. A 70, 062302 (2004)] in the presence of photon loss. Gate operation is severely affected. However, we show that by using photon loss codes proposed for linear optical quantum computation (LOQC), performance is greatly enhanced, outperforming LOQC equivalents. The technique can be applied to other types of nonlinearities, making the implementation of nonlinear optical gates much more attractive.

• OSTI ID: 20982508
• Journal Information: Physical Review. A, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevA.75.052339; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
LOSSES
NONLINEAR PROBLEMS
OPERATION
OPTICS
PHOTONS
QUANTUM COMPUTERS
QUANTUM INFORMATION
SIMULATION