Phys. Rev. Lett. 95, 090502 (2005) [4 pages]Charge-Qubit Operation of an Isolated Double Quantum DotReceived 8 April 2005; published 24 August 2005 We have investigated coherent time evolution of pseudomolecular states of an isolated (leadless) silicon double quantum dot, where operations are carried out via capacitively coupled elements. Manipulation is performed by short pulses applied to a nearby gate, and measurement is performed by a single-electron transistor. The electrical isolation of this qubit results in a significantly longer coherence time than previous reports for semiconductor charge qubits realized in artificial molecules. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.090502
DOI:
10.1103/PhysRevLett.95.090502
PACS:
03.67.Lx, 03.67.Pp, 73.21.La, 85.35.Be
See AlsoComment: O. Astafiev, Y. Nakamura, Yu. A. Pashkin, T. Yamamoto, and J. S. Tsai, Comment on “Charge-Qubit Operation of an Isolated Double Quantum Dot”, Phys. Rev. Lett. 97, 208901 (2006). Reply: J. Gorman, E. G. Emiroglu, D. G. Hasko, and D. A. Williams, Gorman et al. Reply:, Phys. Rev. Lett. 97, 208902 (2006). |
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.