Computation with coherent states via teleportations to and from a quantum bus

Silva, Marcus and Myers, Casey R. (2008) Computation with coherent states via teleportations to and from a quantum bus. Physical Review A, 78 6: 062314-1-062314-10. doi:10.1103/PhysRevA.78.062314

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Author Silva, Marcus
Myers, Casey R.
Title Computation with coherent states via teleportations to and from a quantum bus
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2008-12-05
Sub-type Article (original research)
DOI 10.1103/PhysRevA.78.062314
Open Access Status File (Publisher version)
Volume 78
Issue 6
Start page 062314-1
End page 062314-10
Total pages 10
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Formatted abstract
In this paper, we present results illustrating the power and flexibility of one-bit teleportations in quantum bus computation. We first show a scheme to perform a universal set of gates on continuous variable modes, which we call a quantum bus or qubus, using controlled phase-space rotations, homodyne detection, ancilla qubits, and single-qubit measurement. Within our comparison criteria, the resource usage for this scheme is lower than any previous scheme to date. We then illustrate how one-bit teleportations into a qubus can be used to encode qubit states into a quantum repetition code, which in turn can be used as an efficient method for producing Greenberger-Horne-Zeilinger states that can be used to create large cluster states. Each of these schemes can be modified so that teleportation measurements are post-selected to yield outputs with higher fidelity without changing the physical parameters of the system. ©2008 The American Physical Society
Keyword Quantum bus
Qubits
Qubus
Teleportations
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Centre for Quantum Computer Technology Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
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Created: Fri, 08 Jan 2010, 13:22:29 EST by Jon Swabey on behalf of Faculty of Science