Entangling microscopic defects via a macroscopic quantum shuttle

Grabovskij, G. J., Bushev, P., Cole, J. H., Mueller, C., Lisenfeld, J., Lukashenko, A. and Ustinov, A. V. (2011) Entangling microscopic defects via a macroscopic quantum shuttle. New Journal of Physics, 13 . doi:10.1088/1367-2630/13/6/063015

Author Grabovskij, G. J.
Bushev, P.
Cole, J. H.
Mueller, C.
Lisenfeld, J.
Lukashenko, A.
Ustinov, A. V.
Title Entangling microscopic defects via a macroscopic quantum shuttle
Journal name New Journal of Physics   Check publisher's open access policy
ISSN 1367-2630
Publication date 2011
Year available 2011
Sub-type Article (original research)
DOI 10.1088/1367-2630/13/6/063015
Open Access Status DOI
Volume 13
Total pages 10
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing Ltd.
Collection year 2011
Language eng
Subject 3100 Physics and Astronomy
Abstract In the microscopic world, multipartite entanglement has been achieved with various types of nanometer-sized two-level systems such as trapped ions, atoms and photons. On the macroscopic scale ranging from micrometers to millimeters, recent experiments have demonstrated bipartite and tripartite entanglement for electronic quantum circuits with superconducting Josephson junctions. It remains challenging to bridge these largely different length scales by constructing hybrid quantum systems. Doing so may allow us to manipulate the entanglement of individual microscopic objects separated by macroscopically large distances in a quantum circuit. Here we report on the experimental demonstration of induced coherent interaction between two intrinsic two-level states (TLSs) formed by atomic-scale defects in a solid via a superconducting phase qubit. The tunable superconducting circuit serves as a shuttle communicating quantum information between the two microscopic TLSs. We present a detailed comparison between experiment and theory and find excellent agreement over a wide range of parameters. We then use the theoretical model to study the creation and movement of entanglement between the three components of the quantum system.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
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Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
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