Experimental realization of a multiplexed quantum memory with 225 individually accessible memory cells

Pu Y-F, N. Jiang, W. Chang, Yang H-X, C. Li and Duan L-M ()
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Pu Y-F: Center for Quantum Information, IIIS, Tsinghua University
N. Jiang: Center for Quantum Information, IIIS, Tsinghua University
W. Chang: Center for Quantum Information, IIIS, Tsinghua University
Yang H-X: Center for Quantum Information, IIIS, Tsinghua University
C. Li: Center for Quantum Information, IIIS, Tsinghua University
Duan L-M: Center for Quantum Information, IIIS, Tsinghua University

Nature Communications, 2017, vol. 8, issue 1, 1-6

Abstract: Abstract To realize long-distance quantum communication and quantum network, it is required to have multiplexed quantum memory with many memory cells. Each memory cell needs to be individually addressable and independently accessible. Here we report an experiment that realizes a multiplexed DLCZ-type quantum memory with 225 individually accessible memory cells in a macroscopic atomic ensemble. As a key element for quantum repeaters, we demonstrate that entanglement with flying optical qubits can be stored into any neighboring memory cells and read out after a programmable time with high fidelity. Experimental realization of a multiplexed quantum memory with many individually accessible memory cells and programmable control of its addressing and readout makes an important step for its application in quantum information technology.

Date: 2017
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DOI: 10.1038/ncomms15359

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