Quantum back-action-evading measurement of motion in a negative mass reference frame

Christoffer B. Møller, Rodrigo A. Thomas, Georgios Vasilakis, Emil Zeuthen, Yeghishe Tsaturyan, Mikhail Balabas, Kasper Jensen, Albert Schliesser, Klemens Hammerer and Eugene S. Polzik ()
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Christoffer B. Møller: Niels Bohr Institute, University of Copenhagen
Rodrigo A. Thomas: Niels Bohr Institute, University of Copenhagen
Georgios Vasilakis: Niels Bohr Institute, University of Copenhagen
Emil Zeuthen: Niels Bohr Institute, University of Copenhagen
Yeghishe Tsaturyan: Niels Bohr Institute, University of Copenhagen
Mikhail Balabas: Niels Bohr Institute, University of Copenhagen
Kasper Jensen: Niels Bohr Institute, University of Copenhagen
Albert Schliesser: Niels Bohr Institute, University of Copenhagen
Klemens Hammerer: Institute for Theoretical Physics and Institute for Gravitational Physics (Albert Einstein Institute), Leibniz Universität Hannover
Eugene S. Polzik: Niels Bohr Institute, University of Copenhagen

Nature, 2017, vol. 547, issue 7662, 191-195

Abstract: By coupling a mechanical object to an ensemble of atomic spins with negative effective mass, the object’s position can be measured without the usual quantum back-action perturbation of its momentum.

Date: 2017
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DOI: 10.1038/nature22980

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