Optical zeno gate: Bounds for fault tolerant operation

Leung, P. M. and Ralph, T. C. (2007) Optical zeno gate: Bounds for fault tolerant operation. New Journal of Physics, 9 010224-1-010224-10. doi:10.1088/1367-2630/9/7/224

Author Leung, P. M.
Ralph, T. C.
Title Optical zeno gate: Bounds for fault tolerant operation
Journal name New Journal of Physics   Check publisher's open access policy
ISSN 1367-2630
Publication date 2007-07-11
Year available 2007
Sub-type Article (original research)
DOI 10.1088/1367-2630/9/7/224
Open Access Status DOI
Volume 9
Start page 010224-1
End page 010224-10
Total pages 10
Editor Eberhard Bodenschatz
Place of publication United Kingdom
Publisher Institute of Physics Publishing
Collection year 2008
Language eng
Subject 240402 Quantum Optics and Lasers
780102 Physical sciences
Abstract In principle the Zeno effect controlled-sign gate of Franson et al (2004 Phys. Rev. A 70 062302) is a deterministic two-qubit optical gate. However, when realistic values of photon loss are considered its fidelity is significantly reduced. Here we consider the use of measurement based quantum processing techniques to enhance the operation of the Zeno gate. With the help of quantum teleportation, we show that it is possible to achieve a Zeno CNOT gate (GC-Zeno gate) that gives (near) unit fidelity and moderate probability of success of 0.8 with a two-photon to one-photon absorption ratio kappa = 10(4). We include some mode-mismatch effects and estimate the bounds on the mode overlap and. for which fault tolerant operation would be possible.
Keyword Physics, Multidisciplinary
Linear Optics
Quantum Computation
Q-Index Code C1
Additional Notes Article number: 224

Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 12 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Mon, 18 Feb 2008, 14:21:10 EST