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- W1557027346 abstract "We demonstrate active control of inhomogeneous dephasing and rephasing for single collective atomic spin excitations (spin-waves) created by spontaneous Raman scattering in a quantum memory based on cold $^{87}$Rb atoms. The control is provided by a reversible external magnetic field gradient inducing an inhomogeneous broadening of the atomic hyperfine levels. We demonstrate experimentally that active rephasing preserves the single photon nature of the retrieved photons. Finally, we show that the control of the inhomogeneous dephasing enables the creation of time-separated spin-waves in a single ensemble, followed by a selective readout in time. This is an important step towards the implementation of a functional temporally multiplexed quantum repeater node." @default.
- W1557027346 created "2016-06-24" @default.
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- W1557027346 date "2015-10-12" @default.
- W1557027346 modified "2023-10-14" @default.
- W1557027346 title "Controlled Rephasing of Single Collective Spin Excitations in a Cold Atomic Quantum Memory" @default.
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- W1557027346 doi "https://doi.org/10.1103/physrevlett.115.160501" @default.
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