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Large Quantum Superpositions and Interference of Massive Nanometer-Sized Objects

Phys. Rev. Lett. 107, 020405 – Published 7 July 2011
O. Romero-Isart, A. C. Pflanzer, F. Blaser, R. Kaltenbaek, N. Kiesel, M. Aspelmeyer, and J. I. Cirac
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Abstract

We propose a method to prepare and verify spatial quantum superpositions of a nanometer-sized object separated by distances of the order of its size. This method provides unprecedented bounds for objective collapse models of the wave function by merging techniques and insights from cavity quantum optomechanics and matter-wave interferometry. An analysis and simulation of the experiment is performed taking into account standard sources of decoherence. We provide an operational parameter regime using present-day and planned technology.

DOI: http://dx.doi.org/10.1103/PhysRevLett.107.020405

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  • Received 21 March 2011
  • Published 7 July 2011

© 2011 American Physical Society

Synopsis

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In two places at once

Published 7 July 2011

Quantum superpositions of objects consisting of millions of atoms may be achievable with cavity quantum optomechanical techniques.

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Authors & Affiliations

O. Romero-Isart1, A. C. Pflanzer1, F. Blaser2, R. Kaltenbaek2, N. Kiesel2, M. Aspelmeyer2, and J. I. Cirac1

  • 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748, Garching, Germany
  • 2Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria

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