High speed quantum gates with cavity quantum electrodynamics

Su, C, Greentree, A, Munro, W, Nemoto, K and Hollenberg, L 2008, 'High speed quantum gates with cavity quantum electrodynamics', Physical Review A, vol. 78, no. 6, pp. 1-5.


Document type: Journal Article
Collection: Journal Articles

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Title High speed quantum gates with cavity quantum electrodynamics
Author(s) Su, C
Greentree, A
Munro, W
Nemoto, K
Hollenberg, L
Year 2008
Journal name Physical Review A
Volume number 78
Issue number 6
Start page 1
End page 5
Total pages 5
Publisher American Physical Society
Abstract Cavity quantum electrodynamic schemes for quantum gates are amongst the earliest quantum computing proposals. Despite continued progress and the recent demonstration of photon blockade, there are still issues with optimal coupling and gate operation involving high-quality cavities. Here we show that dynamic cavity control allows for scalable cavity-QED based quantum gates using the full cavity bandwidth. This technique allows an order of magnitude increase in operating speed, and two orders reduction in cavity Q, over passive systems. Our method exploits Stark shift-based Q switching, and is ideally suited to solid-state integrated optical approaches to quantum computing
Subject Quantum Information, Computation and Communication
Keyword(s) information theory
Q-switching
quantum electrodynamics
quantum gates
Stark effect
DOI - identifier 10.1103/PhysRevA.78.062336
Copyright notice © 2008 The American Physical Society
ISSN 1050-2947
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