2013/09/30 by Neil Sinclair, Erhan Saglamyurek, Hassan Mallahzadeh +8
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.113.053603
published as Phys. Rev. Lett. 113, 053603 (2014)
arxiv created 2014/07/18 · arxiv updated 2014/09/26
Future multi-photon applications of quantum optics and quantum information science require quantum memories that simultaneously store many photon states, each encoded into a different optical mode, and enable one to select the mapping between any input and a specific retrieved mode during storage. Here we show, with the example of a quantum repeater, how to employ spectrally-multiplexed states and memories with fixed storage times that allow such mapping between spectral modes. Furthermore, using a Ti:Tm:LiNbO3 waveguide cooled to 3 Kelvin, a phase modulator, and a spectral filter, we demonstrate storage followed by the required feed-forward-controlled frequency manipulation with time-bin qubits encoded into up to 26 multiplexed spectral modes and 97% fidelity.