Quantum computing based on space states without charge transfer
Artikel i vetenskaplig tidskrift, 2010

An implementation of a quantum computer based on space states in double quantum dots is discussed. There is no charge transfer in qubits during a calculation, therefore, uncontrolled entanglement between qubits due to long-range Coulomb interaction is suppressed. Encoding and processing of quantum information is merely performed on symmetric and antisymmetric states of the electron in double quantum dots. Other plausible sources of decoherence caused by interaction with phonons and gates could be substantially suppressed in the structure as well. We also demonstrate how all necessary quantum logic operations, initialization, writing, and read-out could be carried out in the computer. (C) 2010 Elsevier B.V. All rights reserved.

barrier

Quantum computing

Quantum dots

dots

qubits

Decoherence

Charge qubits

gates

Författare

V. Vyurkov

Russian Academy of Sciences

S. Filippov

Russian Academy of Sciences

Moscow Institute of Physics and Technology

Leonid Gorelik

Chalmers, Teknisk fysik, Kondenserade materiens teori

Physics Letters, Section A: General, Atomic and Solid State Physics

0375-9601 (ISSN)

Vol. 374 33 3285-3291

Ämneskategorier

Fysik

DOI

10.1016/j.physleta.2010.06.023