Life after charge noise: recent results with transmon qubits

Life after charge noise: recent results with transmon qubits We review the main theoretical and experimental results for the transmon, a superconducting charge qubit derived from the Cooper pair box. The increased ratio of the Josephson to charging energy results in an exponential suppression of the transmon’s sensitivity to 1/f charge noise. This has been observed experimentally and yields homogeneous broadening, negligible pure dephasing, and long coherence times of up to 3 μs. Anharmonicity of the energy spectrum is required for qubit operation, and has been proven to be sufficient in transmon devices. Transmons have been implemented in a wide array of experiments, demonstrating consistent and reproducible results in very good agreement with theory. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Life after charge noise: recent results with transmon qubits

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Publisher
Springer US
Copyright
Copyright © 2009 by Springer Science+Business Media, LLC
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-009-0100-6
Publisher site
See Article on Publisher Site

References

  • Quantum computation
    Deutsch, D.
  • Superconducting quantum bits
    Clarke, J.; Wilhelm, F.K.
  • Low-frequency noise in dc superconducting quantum interference devices below 1 K
    Wellstood, F.C.; Urbina, C.; Clarke, J.

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