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Quantum information processing with nanomechanical qubits.

Authors
  • Rips, Simon
  • Hartmann, Michael J
Type
Published Article
Journal
Physical Review Letters
Publisher
American Physical Society
Publication Date
Mar 22, 2013
Volume
110
Issue
12
Pages
120503–120503
Identifiers
PMID: 25166784
Source
Medline
License
Unknown

Abstract

We introduce an approach to quantum information processing where the information is stored in the motional degrees of freedom of nanomechanical devices. The qubits of our approach are formed by the two lowest energy levels of mechanical resonators, which are tuned to be strongly anharmonic by suitable electrostatic fields. Single qubit rotations are conducted by radio-frequency voltage pulses that are applied to individual resonators. Two-qubit entangling gates in turn are implemented via a coupling of two qubits to a common optical resonance of a high finesse cavity. We find that gate fidelities exceeding 99% can be achieved for realistic experimental parameters.

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