Continuous-variable quantum computing in optical time-frequency modes using quantum memories

Peter C. Humphreys, W. Steven Kolthammer, Joshua Nunn, Marco Barbieri, Animesh Datta, Ian A. Walmsley

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

We develop a scheme for time-frequency encoded continuous-variable cluster-state quantum computing using quantum memories. In particular, we propose a method to produce, manipulate, and measure two-dimensional cluster states in a single spatial mode by exploiting the intrinsic time-frequency selectivity of Raman quantum memories. Time-frequency encoding enables the scheme to be extremely compact, requiring a number of memories that are a linear function of only the number of different frequencies in which the computational state is encoded, independent of its temporal duration. We therefore show that quantum memories can be a powerful component for scalable photonic quantum information processing architectures.

Original languageEnglish
Article number130502
JournalPhysical Review Letters
Volume113
Issue number3
DOIs
Publication statusPublished - 25 Sep 2014

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quantum computation
coding
selectivity
photonics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Continuous-variable quantum computing in optical time-frequency modes using quantum memories. / Humphreys, Peter C.; Kolthammer, W. Steven; Nunn, Joshua; Barbieri, Marco; Datta, Animesh; Walmsley, Ian A.

In: Physical Review Letters, Vol. 113, No. 3, 130502, 25.09.2014.

Research output: Contribution to journalArticle

Humphreys, Peter C. ; Kolthammer, W. Steven ; Nunn, Joshua ; Barbieri, Marco ; Datta, Animesh ; Walmsley, Ian A. / Continuous-variable quantum computing in optical time-frequency modes using quantum memories. In: Physical Review Letters. 2014 ; Vol. 113, No. 3.
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