Charge qubits and limitations of electrostatic quantum gates

We investigate quantum dot arrays and their application to quantum computation. The arrays analyzed contain a total of a few operating electrons with constant tunneling between the dots. We construct quantum two-level systems near the ground state with a large energy separation to the remainder of t...

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Bibliographic Details
Published inPhysica. E, Low-dimensional systems & nanostructures Vol. 26; no. 1; pp. 342 - 346
Main Authors Weichselbaum, A., Ulloa, S.E.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 01.02.2005
Elsevier
Subjects
Capacitive coupling
Charge qubits
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
Quantum computation
Quantum gates
Quantum information
Single qubits
Quantum gates
03.65.Vf
85.35.Gv
03.67.Lx
Single qubits
Capacitive coupling
85.35.Be
Charge qubits
Ground states
Quantum dots
Two-level systems
Tunnel effect
Electrostatic interaction
85.35.Gv Charge qubits
Quantum computing
Capacitance
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Summary:We investigate quantum dot arrays and their application to quantum computation. The arrays analyzed contain a total of a few operating electrons with constant tunneling between the dots. We construct quantum two-level systems near the ground state with a large energy separation to the remainder of the states and with the electrostatic interaction modeled within the capacitance matrix formalism. A set of representative examples is investigated numerically.
ISSN:1386-9477
1873-1759
DOI:10.1016/j.physe.2004.08.105