Space-time qubits

Pienaar, J. L., Myers, C. R. and Ralph, T. C. (2011) Space-time qubits. Physical Review A, 84 2: . doi:10.1103/PhysRevA.84.022315

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Author Pienaar, J. L.
Myers, C. R.
Ralph, T. C.
Title Space-time qubits
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2011-08-01
Sub-type Article (original research)
DOI 10.1103/PhysRevA.84.022315
Open Access Status File (Publisher version)
Volume 84
Issue 2
Total pages 9
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2012
Language eng
Abstract We construct a qubit algebra from field creation and annihilation operators acting on a global vacuum state. Particles to be used as qubits are created from the vacuum by a near-deterministic single-particle source. Our formulation makes the space-time dependence of the qubits explicit, preparing the way for quantum computation within a field framework. The method can be generalized to deal with interacting qubits whose wave packets are not perfectly matched to each other. We give an example of how to calculate the Heisenberg evolution of a simple two-qubit circuit, taking expectation values in the field vacuum state.
Keyword Quantum Information
Creation and annihilation
Expectation values
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
Centre for Quantum Computer Technology Publications
Official 2012 Collection
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Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 2 times in Scopus Article | Citations
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