Reim, K. F., Nunn, J., Jin, X.-M., Michelberger, P. S., Champion, T. F. M., England, D. G., Lee, K. C., Langford, N. K. and Walmsley, I. A. (2012) Multipulse Addressing of a Raman Quantum Memory: Configurable Beam Splitting and Efficient Readout. Physical Review Letters, 108
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Quantum memories are vital to the scalability of photonic quantum information processing (PQIP), since the storage of photons enables repeat-until-success strategies. On the other hand the key element of all PQIP architectures is the beam splitter, which allows to coherently couple optical modes. Here we show how to combine these crucial functionalities by addressing a Raman quantum memory with multiple control pulses. The result is a coherent optical storage device with an extremely large time-bandwidth product, that functions as an array of dynamically configurable beam splitters, and that can be read out with arbitrarily high efficiency. Networks of such devices would allow fully scalable PQIP, with applications in quantum computation, long-distance quantum communications and quantum metrology.
This is a Submitted version This version's date is: 26/6/2012 This item is not peer reviewed
https://repository.royalholloway.ac.uk/items/2115ab60-14a5-e7e1-741f-225c3f13c1bc/8/
Deposited by Research Information System (atira) on 19-Jun-2013 in Royal Holloway Research Online.Last modified on 19-Jun-2013
4 pages, 3 figures