van Loock, P. and Braunstein, S.L. (2001) Telecloning of continuous quantum variables. Physical Review Letters, 87 (24). pp. 247901-1. ISSN 0031-9007
Abstract
We propose entangled (M+1)-mode quantum states as a multiuser quantum channel for continuous-variable communication. Arbitrary quantum states can be sent via this channel simultaneously to M remote and separated locations with equal minimum excess noise in each output mode. For a set of coherent-state inputs, the channel realizes optimal symmetric 1→M cloning at a distance (“telecloning”). It also provides the optimal cloning of coherent states without the need of amplifying the state of interest. The generation of the multiuser quantum channel requires no more than two 10log10{(sqrt[M]-1)/(sqrt[M]+1)} dB squeezed states and M beam splitters.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Computer Science (York) |
Depositing User: | York RAE Import |
Date Deposited: | 25 Feb 2009 11:57 |
Last Modified: | 25 Feb 2009 11:57 |
Published Version: | http://dx.doi.org/10.1103/PhysRevLett.87.247901 |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevLett.87.247901 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:7227 |