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 journalArticlepeer-review

57 Citations (SciVal)


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
Issue number3
Publication statusPublished - 25 Sept 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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