@Article{Sprague2013a,
  author        = {Sprague, M.R.a , England, D.G.a d , Abdolvand, A.b , Nunn, J.a , Jin, X.-M.a , Steven Kolthammer, W.a , Barbieri, M.a , Rigal, B.c , Michelberger, P.S.a , Champion, T.F.M.a , Russell, P.S.J.b , Walmsley, I.A.a},
  journal       = {New Journal of Physics},
  title         = {Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory},
  year          = {2013},
  volume        = {15},
  abstract      = {The generation of large multiphoton quantum states - for applications in computing, metrology and simulation - requires a network of high-efficiency quantum memories capable of storing broadband pulses. Integrating these memories into a fibre offers a number of advantages towards realizing this goal: strong light-matter coupling at low powers, simplified alignment and compatibility with existing photonic architectures. Here, we introduce a large-core kagome-structured hollow-core fibre as a suitable platform for an integrated fibre-based quantum memory with a warm atomic vapour. We demonstrate, for the first time, efficient optical pumping in such a system, where 90 ± 1% of atoms are prepared in the ground state. We measure high optical depths (3 × 104) and narrow homogeneous linewidths (6 ± 2 MHz) that do not exhibit significant transit-time broadening, showing that we can prepare a Λ-level system in a pure state. Our results establish that kagome fibres are suitable for implementing a broadband, room-temperature quantum memory, as well as a range of nonlinear optical effects. © IOP Publishing and Deutsche Physikalische Gesellschaft.},
  affiliation   = {Clarendon Laboratory, University of Oxford, Parks Road, OX1 3PU Oxford, United Kingdom; Max Planck Institute for the Science of Light, Guenther-Scharowsky Straße 1, D-91058 Erlangen, Germany; École Polytechnique, Route de Saclay, 91120 Palaiseau, France; National Research Council Canada, 100 Sussex Drive, Ottawa K1A 0R6, Canada},
  art_number    = {055013},
  document_type = {Article},
  doi           = {10.1088/1367-2630/15/5/055013},
  source        = {Scopus},
  timestamp     = {2016.03.02},
  url           = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84878222338&partnerID=40&md5=c5c6ac0690dd9dc23aec09903962e05d},
}

{"_id":"pvFLGLNdGe2aaEtpK","bibbaseid":"sprague-england-abdolvand-nunn-jin-stevenkolthammer-barbieri-rigal-etal-efficientopticalpumpingandhighopticaldepthinahollowcorephotoniccrystalfibreforabroadbandquantummemory-2013","downloads":0,"creationDate":"2015-12-15T14:52:43.132Z","title":"Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory","author_short":["Sprague, M.","England, D. d","Abdolvand, A.","Nunn, J.","Jin, X.","Steven Kolthammer, W.","Barbieri, M.","Rigal, B.","Michelberger, P.","Champion, T.","Russell, P.","Walmsley, I."],"year":2013,"bibtype":"article","biburl":"http://github.com/phockett/UQO-group/raw/main/group_ongoing.bib","bibdata":{"bibtype":"article","type":"article","author":[{"propositions":[],"lastnames":["Sprague"],"firstnames":["M.R.a"],"suffixes":[]},{"propositions":[],"lastnames":["England"],"firstnames":["D.G.a","d"],"suffixes":[]},{"propositions":[],"lastnames":["Abdolvand"],"firstnames":["A.b"],"suffixes":[]},{"propositions":[],"lastnames":["Nunn"],"firstnames":["J.a"],"suffixes":[]},{"propositions":[],"lastnames":["Jin"],"firstnames":["X.-M.a"],"suffixes":[]},{"propositions":[],"lastnames":["Steven","Kolthammer"],"firstnames":["W.a"],"suffixes":[]},{"propositions":[],"lastnames":["Barbieri"],"firstnames":["M.a"],"suffixes":[]},{"propositions":[],"lastnames":["Rigal"],"firstnames":["B.c"],"suffixes":[]},{"propositions":[],"lastnames":["Michelberger"],"firstnames":["P.S.a"],"suffixes":[]},{"propositions":[],"lastnames":["Champion"],"firstnames":["T.F.M.a"],"suffixes":[]},{"propositions":[],"lastnames":["Russell"],"firstnames":["P.S.J.b"],"suffixes":[]},{"propositions":[],"lastnames":["Walmsley"],"firstnames":["I.A.a"],"suffixes":[]}],"journal":"New Journal of Physics","title":"Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory","year":"2013","volume":"15","abstract":"The generation of large multiphoton quantum states - for applications in computing, metrology and simulation - requires a network of high-efficiency quantum memories capable of storing broadband pulses. Integrating these memories into a fibre offers a number of advantages towards realizing this goal: strong light-matter coupling at low powers, simplified alignment and compatibility with existing photonic architectures. Here, we introduce a large-core kagome-structured hollow-core fibre as a suitable platform for an integrated fibre-based quantum memory with a warm atomic vapour. We demonstrate, for the first time, efficient optical pumping in such a system, where 90 ± 1% of atoms are prepared in the ground state. We measure high optical depths (3 × 104) and narrow homogeneous linewidths (6 ± 2 MHz) that do not exhibit significant transit-time broadening, showing that we can prepare a Λ-level system in a pure state. Our results establish that kagome fibres are suitable for implementing a broadband, room-temperature quantum memory, as well as a range of nonlinear optical effects. © IOP Publishing and Deutsche Physikalische Gesellschaft.","affiliation":"Clarendon Laboratory, University of Oxford, Parks Road, OX1 3PU Oxford, United Kingdom; Max Planck Institute for the Science of Light, Guenther-Scharowsky Straße 1, D-91058 Erlangen, Germany; École Polytechnique, Route de Saclay, 91120 Palaiseau, France; National Research Council Canada, 100 Sussex Drive, Ottawa K1A 0R6, Canada","art_number":"055013","document_type":"Article","doi":"10.1088/1367-2630/15/5/055013","source":"Scopus","timestamp":"2016.03.02","url":"http://www.scopus.com/inward/record.url?eid=2-s2.0-84878222338&partnerID=40&md5=c5c6ac0690dd9dc23aec09903962e05d","bibtex":"@Article{Sprague2013a,\n author = {Sprague, M.R.a , England, D.G.a d , Abdolvand, A.b , Nunn, J.a , Jin, X.-M.a , Steven Kolthammer, W.a , Barbieri, M.a , Rigal, B.c , Michelberger, P.S.a , Champion, T.F.M.a , Russell, P.S.J.b , Walmsley, I.A.a},\n journal = {New Journal of Physics},\n title = {Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory},\n year = {2013},\n volume = {15},\n abstract = {The generation of large multiphoton quantum states - for applications in computing, metrology and simulation - requires a network of high-efficiency quantum memories capable of storing broadband pulses. Integrating these memories into a fibre offers a number of advantages towards realizing this goal: strong light-matter coupling at low powers, simplified alignment and compatibility with existing photonic architectures. Here, we introduce a large-core kagome-structured hollow-core fibre as a suitable platform for an integrated fibre-based quantum memory with a warm atomic vapour. We demonstrate, for the first time, efficient optical pumping in such a system, where 90 ± 1% of atoms are prepared in the ground state. We measure high optical depths (3 × 104) and narrow homogeneous linewidths (6 ± 2 MHz) that do not exhibit significant transit-time broadening, showing that we can prepare a Λ-level system in a pure state. Our results establish that kagome fibres are suitable for implementing a broadband, room-temperature quantum memory, as well as a range of nonlinear optical effects. © IOP Publishing and Deutsche Physikalische Gesellschaft.},\n affiliation = {Clarendon Laboratory, University of Oxford, Parks Road, OX1 3PU Oxford, United Kingdom; Max Planck Institute for the Science of Light, Guenther-Scharowsky Straße 1, D-91058 Erlangen, Germany; École Polytechnique, Route de Saclay, 91120 Palaiseau, France; National Research Council Canada, 100 Sussex Drive, Ottawa K1A 0R6, Canada},\n art_number = {055013},\n document_type = {Article},\n doi = {10.1088/1367-2630/15/5/055013},\n source = {Scopus},\n timestamp = {2016.03.02},\n url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84878222338&partnerID=40&md5=c5c6ac0690dd9dc23aec09903962e05d},\n}\n\n","author_short":["Sprague, M.","England, D. d","Abdolvand, A.","Nunn, J.","Jin, X.","Steven Kolthammer, W.","Barbieri, M.","Rigal, B.","Michelberger, P.","Champion, T.","Russell, P.","Walmsley, I."],"key":"Sprague2013a","id":"Sprague2013a","bibbaseid":"sprague-england-abdolvand-nunn-jin-stevenkolthammer-barbieri-rigal-etal-efficientopticalpumpingandhighopticaldepthinahollowcorephotoniccrystalfibreforabroadbandquantummemory-2013","role":"author","urls":{"Paper":"http://www.scopus.com/inward/record.url?eid=2-s2.0-84878222338&partnerID=40&md5=c5c6ac0690dd9dc23aec09903962e05d"},"metadata":{"authorlinks":{}},"downloads":0},"search_terms":["efficient","optical","pumping","high","optical","depth","hollow","core","photonic","crystal","fibre","broadband","quantum","memory","sprague","england","abdolvand","nunn","jin","steven kolthammer","barbieri","rigal","michelberger","champion","russell","walmsley"],"keywords":[],"authorIDs":[],"dataSources":["6KGmJxs9RrDfHzcu8","H7fwLrC4uE8sA55y4","ZeSAiiSynrZYWcdaA","74PaJ3jeYTJQFhBLi","Cyvp3egaEX9XcqyzN","YfcyZnFA2cDJDftuJ","BqutdYRmHLywqGRJb"]}