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Phonon decoherence of a double quantum dot charge qubit

Publication ,  Journal Article
Vorojtsov, S; Mucciolo, ER; Baranger, HU
Published in: Physical Review B - Condensed Matter and Materials Physics
January 1, 2005

We study decoherence of a quantum dot charge qubit due to coupling to piezoelectric acoustic phonons in the Born-Markov approximation. After including appropriate form factors, we find that phonon decoherence rates are one to two orders of magnitude weaker than was previously predicted. We calculate the dependence of the Q factor on lattice temperature, quantum dot size, and interdot coupling. Our results suggest that mechanisms other than phonon decoherence play a more significant role in current experimental setups. © 2005 The American Physical Society.

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Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

January 1, 2005

Volume

71

Issue

20

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

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Vorojtsov, S., Mucciolo, E. R., & Baranger, H. U. (2005). Phonon decoherence of a double quantum dot charge qubit. Physical Review B - Condensed Matter and Materials Physics, 71(20). https://doi.org/10.1103/PhysRevB.71.205322
Vorojtsov, S., E. R. Mucciolo, and H. U. Baranger. “Phonon decoherence of a double quantum dot charge qubit.” Physical Review B - Condensed Matter and Materials Physics 71, no. 20 (January 1, 2005). https://doi.org/10.1103/PhysRevB.71.205322.
Vorojtsov S, Mucciolo ER, Baranger HU. Phonon decoherence of a double quantum dot charge qubit. Physical Review B - Condensed Matter and Materials Physics. 2005 Jan 1;71(20).
Vorojtsov, S., et al. “Phonon decoherence of a double quantum dot charge qubit.” Physical Review B - Condensed Matter and Materials Physics, vol. 71, no. 20, Jan. 2005. Scopus, doi:10.1103/PhysRevB.71.205322.
Vorojtsov S, Mucciolo ER, Baranger HU. Phonon decoherence of a double quantum dot charge qubit. Physical Review B - Condensed Matter and Materials Physics. 2005 Jan 1;71(20).

Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

January 1, 2005

Volume

71

Issue

20

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences