Storage of multiple coherent microwave excitations in an electron spin ensemble

Hua Wu; Richard E. George; Janus H. Wesenberg; Klaus Mølmer; David I. Schuster; Robert J. Schoelkopf; Kohei M. Itoh; Arzhang Ardavan; John J.L. Morton; G. Andrew D. Briggs

doi:10.1103/PhysRevLett.105.140503

Storage of multiple coherent microwave excitations in an electron spin ensemble

Hua Wu, Richard E. George, Janus H. Wesenberg, Klaus Mølmer, David I. Schuster, Robert J. Schoelkopf, Kohei M. Itoh, Arzhang Ardavan, John J.L. Morton, G. Andrew D. Briggs

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153 Citations (Scopus)

Abstract

Strong coupling between a microwave photon and electron spins, which could enable a long-lived quantum memory element for superconducting qubits, is possible using a large ensemble of spins. This represents an inefficient use of resources unless multiple photons, or qubits, can be orthogonally stored and retrieved. Here we employ holographic techniques to realize 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.

Original language	English
Article number	140503
Journal	Physical review letters
Volume	105
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.105.140503
Publication status	Published - 2010 Sept 27

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.105.140503

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title = "Storage of multiple coherent microwave excitations in an electron spin ensemble",

abstract = "Strong coupling between a microwave photon and electron spins, which could enable a long-lived quantum memory element for superconducting qubits, is possible using a large ensemble of spins. This represents an inefficient use of resources unless multiple photons, or qubits, can be orthogonally stored and retrieved. Here we employ holographic techniques to realize 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.",

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doi = "10.1103/PhysRevLett.105.140503",

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AU - Wu, Hua

AU - George, Richard E.

AU - Wesenberg, Janus H.

AU - Mølmer, Klaus

AU - Schuster, David I.

AU - Schoelkopf, Robert J.

AU - Itoh, Kohei M.

AU - Ardavan, Arzhang

AU - Morton, John J.L.

AU - Briggs, G. Andrew D.

PY - 2010/9/27

Y1 - 2010/9/27

N2 - Strong coupling between a microwave photon and electron spins, which could enable a long-lived quantum memory element for superconducting qubits, is possible using a large ensemble of spins. This represents an inefficient use of resources unless multiple photons, or qubits, can be orthogonally stored and retrieved. Here we employ holographic techniques to realize 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.

AB - Strong coupling between a microwave photon and electron spins, which could enable a long-lived quantum memory element for superconducting qubits, is possible using a large ensemble of spins. This represents an inefficient use of resources unless multiple photons, or qubits, can be orthogonally stored and retrieved. Here we employ holographic techniques to realize 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.

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Storage of multiple coherent microwave excitations in an electron spin ensemble

Abstract

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