Configurable Unitary Transformations and Linear Logic Gates Using Quantum Memories
Date
2014
Authors
Campbell, Geoff
Pinel, Olivier
Hosseini, Mahdi
Ralph, Timothy Cameron
Buchler, Benjamin
Lam, Ping Koy
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Volume Title
Publisher
American Physical Society
Abstract
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.
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Source
Physical Review Letters
Type
Journal article