Configurable unitary transformations and linear logic gates using quantum memories

G. T. Campbell, O. Pinel*, M. Hosseini, T. C. Ralph, B. C. Buchler, P. K. Lam

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


We show that a set of optical memories can act as a configurable linear optical network operating on frequency-multiplexed optical states. Our protocol is applicable to any quantum memories that employ off-resonant Raman transitions to store optical information in atomic spins. In addition to the configurability, the protocol also offers favorable scaling with an increasing number of modes where N memories can be configured to implement arbitrary N-mode unitary operations during storage and readout. We demonstrate the versatility of this protocol by showing an example where cascaded memories are used to implement a conditional cz gate.

Original languageEnglish (US)
Article number063601
JournalPhysical review letters
Issue number6
StatePublished - Aug 4 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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