Quantum ground state and single-phonon control of a mechanical resonator

  title={Quantum ground state and single-phonon control of a mechanical resonator},
  author={Aaron O'Connell and Max Hofheinz and Markus Ansmann and Radoslaw C. Bialczak and Mike Lenander and Erik Lucero and Matthew Neeley and Daniel Thomas Sank and H. Wang and Martin P. Weides and J. Wenner and John M. Martinis and Andrew N. Cleland},
Quantum mechanics provides a highly accurate description of a wide variety of physical systems. However, a demonstration that quantum mechanics applies equally to macroscopic mechanical systems has been a long-standing challenge, hindered by the difficulty of cooling a mechanical mode to its quantum ground state. The temperatures required are typically far below those attainable with standard cryogenic methods, so significant effort has been devoted to developing alternative cooling techniques… 
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