Collective Encoding of Quantum Information in a Quantum Dot Register

• Authors: A. Grodecka , P. Machnikowski
• Languages of publication: EN

Abstracts

EN

We define the collective logical quantum bit as a state on an array of 2, 4, and 8 quantum dots. We show that such an array can be controlled with less phonon-induced pure dephasing than a single dot. We calculate the dephasing accompanying a single-qubit operation on the collective logical qubit by means of perturbative method describing the open system evolution under arbitrary driving.

Keywords

EN

78.67.Hc; 63.20.Kr; 03.67.Pp

Discipline

• 03.67.Pp: Quantum error correction and other methods for protection against decoherence(see also 03.65.Yz Decoherence; open systems; quantum statistical methods; for decoherence in Bose-Einstein condensates, see 03.75.Gg)
• 78.67.Hc: Quantum dots

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 110
• Issue: 2
• Pages: 195-200

Dates

published

2006-08

received

2006-06-17

Contributors

author

A. Grodecka

• Institute of Physics, Wrocław University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland

author

P. Machnikowski

• Institute of Physics, Wrocław University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland

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Identifiers

DOI

10.12693/APhysPolA.110.195