Adding control to arbitrary unknown quantum operations

Zhou, Xiao-Qi, Ralph, Timothy C., Kalasuwan, Pruet, Zhang, Mian, Peruzzo, Alberto, Lanyon, Benjamin P. and O'Brien, Jeremy L. (2011) Adding control to arbitrary unknown quantum operations. Nature Communications, 2 1 Article # 413: . doi:10.1038/ncomms1392


Author Zhou, Xiao-Qi
Ralph, Timothy C.
Kalasuwan, Pruet
Zhang, Mian
Peruzzo, Alberto
Lanyon, Benjamin P.
O'Brien, Jeremy L.
Title Adding control to arbitrary unknown quantum operations
Journal name Nature Communications   Check publisher's open access policy
ISSN 2041-1723
Publication date 2011-08
Sub-type Article (original research)
DOI 10.1038/ncomms1392
Volume 2
Issue 1 Article # 413
Total pages 8
Place of publication United Kingdom
Publisher Nature Publishing Group
Collection year 2012
Language eng
Formatted abstract Although quantum computers promise significant advantages, the complexity of quantum algorithms remains a major technological obstacle. We have developed and demonstrated an architecture-independent technique that simplifies adding control qubits to arbitrary quantum operations - a requirement in many quantum algorithms, simulations and metrology. The technique, which is independent of how the operation is done, does not require knowledge of what the operation is, and largely separates the problems of how to implement a quantum operation in the laboratory and how to add a control. Here, we demonstrate an entanglement-based version in a photonic system, realizing a range of different two-qubit gates with high fidelity. © 2011 Macmillan Publishers Limited. All rights reserved.
Keyword Gate
Entanglement
Computation
Computers
Networks
Atoms
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2012 Collection
 
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