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Storage of multiple coherent microwave excitations in an electron spin ensemble

Wu, H; George, RE; Ardavan, A; Wesenberg, JH; Mølmer, K; Schuster, DI; Schoelkopf, RJ; ... Briggs, GAD; + view all (2009) Storage of multiple coherent microwave excitations in an electron spin ensemble. Physical Review Letters , 105 (14) , Article 140503. 10.1103/PhysRevLett.105.140503. Green open access

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Abstract

Electron and nuclear spins have good coherence times and an ensemble of spins is a promising candidate for a quantum memory. By employing holographic techniques via field gradients a single ensemble may be used to store many bits of information. Here we present a coherent memory using a pulsed magnetic field gradient, and demonstrate the storage and retrieval of up to 100 weak 10 GHz coherent excitations in collective states of an electron spin ensemble. We further show that such collective excitations in the electron spin can then be stored in nuclear spin states, which offer coherence times in excess of seconds.

Type: Article
Title: Storage of multiple coherent microwave excitations in an electron spin ensemble
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.105.140503
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.105.140503
Language: English
Additional information: © 2010 The American Physical Society
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1362754
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