Enhancing multiphoton rates with quantum memories. Nunn, J., Langford, N., Kolthammer, W., Champion, T., Sprague, M., Michelberger, P., Jin, X. c, England, D., & Walmsley, I. Physical Review Letters, 2013.
Enhancing multiphoton rates with quantum memories [link]Paper  doi  abstract   bibtex   
Single photons are a vital resource for optical quantum information processing. Efficient and deterministic single photon sources do not yet exist, however. To date, experimental demonstrations of quantum processing primitives have been implemented using nondeterministic sources combined with heralding and/or postselection. Unfortunately, even for eight photons, the data rates are already so low as to make most experiments impracticable. It is well known that quantum memories, capable of storing photons until they are needed, are a potential solution to this "scaling catastrophe." Here, we analyze in detail the benefits of quantum memories for producing multiphoton states, showing how the production rates can be enhanced by many orders of magnitude. We identify the quantity ηB as the most important figure of merit in this connection, where η and B are the efficiency and time-bandwidth product of the memories, respectively. © 2013 American Physical Society.
@Article{Nunn2013,
  author        = {Nunn, J.a , Langford, N.K.b , Kolthammer, W.S.a , Champion, T.F.M.a , Sprague, M.R.a , Michelberger, P.S.a , Jin, X.-M.a c , England, D.G.a , Walmsley, I.A.a},
  journal       = {Physical Review Letters},
  title         = {Enhancing multiphoton rates with quantum memories},
  year          = {2013},
  number        = {13},
  volume        = {110},
  abstract      = {Single photons are a vital resource for optical quantum information processing. Efficient and deterministic single photon sources do not yet exist, however. To date, experimental demonstrations of quantum processing primitives have been implemented using nondeterministic sources combined with heralding and/or postselection. Unfortunately, even for eight photons, the data rates are already so low as to make most experiments impracticable. It is well known that quantum memories, capable of storing photons until they are needed, are a potential solution to this "scaling catastrophe." Here, we analyze in detail the benefits of quantum memories for producing multiphoton states, showing how the production rates can be enhanced by many orders of magnitude. We identify the quantity ηB as the most important figure of merit in this connection, where η and B are the efficiency and time-bandwidth product of the memories, respectively. © 2013 American Physical Society.},
  affiliation   = {Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom; Department of Physics, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, United Kingdom; Centre for Quantum Technologies, National University of Singapore, 117543 Singapore, Singapore},
  art_number    = {133601},
  document_type = {Article},
  doi           = {10.1103/PhysRevLett.110.133601},
  source        = {Scopus},
  timestamp     = {2016.03.02},
  url           = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84875421248&partnerID=40&md5=c9e34bd3eae3f052ddd38192bde8f0a3},
}

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