Noise analysis of single-mode Gaussian operations using continuous-variable cluster states

Alexander, R, Armstrong, S, Ukai, R and Menicucci, N 2014, 'Noise analysis of single-mode Gaussian operations using continuous-variable cluster states', Physical Review A - Atomic, Molecular, and Optical Physics, vol. 90, no. 6, 062324, pp. 1-19.


Document type: Journal Article
Collection: Journal Articles

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Title Noise analysis of single-mode Gaussian operations using continuous-variable cluster states
Author(s) Alexander, R
Armstrong, S
Ukai, R
Menicucci, N
Year 2014
Journal name Physical Review A - Atomic, Molecular, and Optical Physics
Volume number 90
Issue number 6
Article Number 062324
Start page 1
End page 19
Total pages 19
Publisher American Physical Society
Abstract We consider measurement-based quantum computation that uses scalable continuous-variable cluster states with a one-dimensional topology. The physical resource, known here as the dual-rail quantum wire, can be generated using temporally multiplexed offline squeezing and linear optics or by using a single optical parametric oscillator. We focus on an important class of quantum gates, specifically Gaussian unitaries that act on single quantum modes (qumodes), which gives universal quantum computation when supplemented with multi-qumode operations and photon-counting measurements. The dual-rail wire supports two routes for applying single-qumode Gaussian unitaries: The first is to use traditional one-dimensional quantum-wire cluster-state measurement protocols. The second takes advantage of the dual-rail quantum wire in order to apply unitaries by measuring pairs of qumodes called macronodes. We analyze and compare these methods in terms of the suitability for implementing single-qumode Gaussian measurement-based quantum computation.
Subject Quantum Information, Computation and Communication
DOI - identifier 10.1103/PhysRevA.90.062324
Copyright notice ©2014 American Physical Society
ISSN 1050-2947
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