Ultra-large-scale continuous-variable cluster states multiplexed in the time domain

Yokoyama, S, Ukai, R, Armstrong, S, Sornphiphatphong, C, Kaji, T, Suzuki, S, Yoshikawa, J, Menicucci, N and Furusawa, A 2013, 'Ultra-large-scale continuous-variable cluster states multiplexed in the time domain', Nature Photonics, vol. 7, pp. 982-986.


Document type: Journal Article
Collection: Journal Articles

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Title Ultra-large-scale continuous-variable cluster states multiplexed in the time domain
Author(s) Yokoyama, S
Ukai, R
Armstrong, S
Sornphiphatphong, C
Kaji, T
Suzuki, S
Yoshikawa, J
Menicucci, N
Furusawa, A
Year 2013
Journal name Nature Photonics
Volume number 7
Start page 982
End page 986
Publisher Nature Publishing Group
Abstract Quantum computers promise ultrafast performance for certain tasks. Experimentally appealing, measurement-based quantum computation requires an entangled resource called a cluster state, with long computations requiring large cluster states. Previously, the largest cluster state consisted of eight photonic qubits or light modes, and the largest multipartite entangled state of any sort involved 14 trapped ions. These implementations involve quantum entities separated in space and, in general, each experimental apparatus is used only once. Here, we circumvent this inherent inefficiency by multiplexing light modes in the time domain. We deterministically generate and fully characterize a continuous-variable cluster state containing more than 10,000 entangled modes. This is, by three orders of magnitude, the largest entangled state created to date. The entangled modes are individually addressable wave packets of light in two beams. Furthermore, we present an efficient scheme for measurement-based quantum computation on this cluster state based on sequential applications of quantum teleportation.
Subject Quantum Optics
Quantum Information, Computation and Communication
DOI - identifier 10.1038/nphoton.2013.287
Copyright notice © 2013 Macmillan Publishers Limited. All rights reserved.
ISSN 1749-4885
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