Practical effects in the preparation of cluster states using weak non-linearities

Rohde, Peter P., Munro, William J., Ralph, Timothy C., van Loock, Peter and Nemoto, Kae (2008) Practical effects in the preparation of cluster states using weak non-linearities. Quantum Information & Computation, 8 1 & 2: 0053-0067.


Author Rohde, Peter P.
Munro, William J.
Ralph, Timothy C.
van Loock, Peter
Nemoto, Kae
Title Practical effects in the preparation of cluster states using weak non-linearities
Journal name Quantum Information & Computation
ISSN 1533-7146
Publication date 2008-01-01
Year available 2008
Sub-type Article (original research)
Open Access Status Not yet assessed
Volume 8
Issue 1 & 2
Start page 0053
End page 0067
Total pages 15
Editor S. L. Braunstein
I. Cirac
R. E. Cleve
Place of publication Paramus, N. J., USA
Publisher Rinton Press, Inc.
Language eng
Subject C1
020603 Quantum Information, Computation and Communication
970102 Expanding Knowledge in the Physical Sciences
240000 Physical Sciences
Abstract We discuss experimental effects in the implementation of a recent scheme for performing bus mediated entangling operations between qubits. Here a bus mode, a strong coherent state, successively undergoes weak Kerr-type non-linear interactions with qubits. A quadrature measurement on the bus then projects the qubits into an entangled state. This approach has the benefit that entangling gates are non-destructive, may be performed non-locally, and there is no need for efficient single photon detection. In this paper we examine practical issues affecting its experimental implementation. In particular, we analyze the effects of post-selection errors, qubit loss, bus loss, mismatched coupling rates and mode-mismatch. We derive error models for these effects and relate them to realistic fault-tolerant thresholds, providing insight into realistic experimental requirements.
Keyword Quantum computing
Decoherence
Kerr
Bright Coherent-Light
Quantum Computation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Sat, 21 Mar 2009, 02:17:49 EST by Ruth Forrest on behalf of ARC Ctr of Excell for Quantum Computer Technology