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Electron dynamics in quantum gate operation

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Electron dynamics in quantum gate operation. / Kerridge, A.; Harker, A. H.; Stoneham, A. M.
In: Journal of Physics: Condensed Matter, Vol. 19, No. 28, 282201, 18.07.2007.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Kerridge, A, Harker, AH & Stoneham, AM 2007, 'Electron dynamics in quantum gate operation', Journal of Physics: Condensed Matter, vol. 19, no. 28, 282201. https://doi.org/10.1088/0953-8984/19/28/282201

APA

Kerridge, A., Harker, A. H., & Stoneham, A. M. (2007). Electron dynamics in quantum gate operation. Journal of Physics: Condensed Matter, 19(28), Article 282201. https://doi.org/10.1088/0953-8984/19/28/282201

Vancouver

Kerridge A, Harker AH, Stoneham AM. Electron dynamics in quantum gate operation. Journal of Physics: Condensed Matter. 2007 Jul 18;19(28):282201. doi: 10.1088/0953-8984/19/28/282201

Author

Kerridge, A. ; Harker, A. H. ; Stoneham, A. M. / Electron dynamics in quantum gate operation. In: Journal of Physics: Condensed Matter. 2007 ; Vol. 19, No. 28.

Bibtex

@article{4db288439f40490cbdf4fd03c050ffb8,
title = "Electron dynamics in quantum gate operation",
abstract = "We model the evolving time- dependent electronic structure of a solid- state quantum gate as it performs basic quantum operations. Our time- dependent configuration- interaction method follows the evolution of two donor electron spin qubits interacting with a third, optically excited, control spin in an applied magnetic field, a possible realization of the basic component of a proposed quantum information processor. We identify unitary operations which approximately disentangle the control spin, and use them to construct high-accuracy two- electron operations that are locally equivalent to CNOT, SWAP and root SWAP operations. From our evaluation of the accuracy of a set of candidate gates we estimate the residual entanglement of the control electron and overall gate operation times. These results attest to the feasibility of the silicon- based quantum gates proposed by Stoneham, Fisher and Greenland.",
keywords = "SELF-CONSISTENT CALCULATIONS, SHALLOW DEFECTS, SILICON, SEMICONDUCTORS, COMPUTATION, COMPUTER",
author = "A. Kerridge and Harker, {A. H.} and Stoneham, {A. M.}",
year = "2007",
month = jul,
day = "18",
doi = "10.1088/0953-8984/19/28/282201",
language = "English",
volume = "19",
journal = "Journal of Physics: Condensed Matter",
issn = "0953-8984",
publisher = "IOP Publishing Ltd",
number = "28",

}

RIS

TY - JOUR

T1 - Electron dynamics in quantum gate operation

AU - Kerridge, A.

AU - Harker, A. H.

AU - Stoneham, A. M.

PY - 2007/7/18

Y1 - 2007/7/18

N2 - We model the evolving time- dependent electronic structure of a solid- state quantum gate as it performs basic quantum operations. Our time- dependent configuration- interaction method follows the evolution of two donor electron spin qubits interacting with a third, optically excited, control spin in an applied magnetic field, a possible realization of the basic component of a proposed quantum information processor. We identify unitary operations which approximately disentangle the control spin, and use them to construct high-accuracy two- electron operations that are locally equivalent to CNOT, SWAP and root SWAP operations. From our evaluation of the accuracy of a set of candidate gates we estimate the residual entanglement of the control electron and overall gate operation times. These results attest to the feasibility of the silicon- based quantum gates proposed by Stoneham, Fisher and Greenland.

AB - We model the evolving time- dependent electronic structure of a solid- state quantum gate as it performs basic quantum operations. Our time- dependent configuration- interaction method follows the evolution of two donor electron spin qubits interacting with a third, optically excited, control spin in an applied magnetic field, a possible realization of the basic component of a proposed quantum information processor. We identify unitary operations which approximately disentangle the control spin, and use them to construct high-accuracy two- electron operations that are locally equivalent to CNOT, SWAP and root SWAP operations. From our evaluation of the accuracy of a set of candidate gates we estimate the residual entanglement of the control electron and overall gate operation times. These results attest to the feasibility of the silicon- based quantum gates proposed by Stoneham, Fisher and Greenland.

KW - SELF-CONSISTENT CALCULATIONS

KW - SHALLOW DEFECTS

KW - SILICON

KW - SEMICONDUCTORS

KW - COMPUTATION

KW - COMPUTER

U2 - 10.1088/0953-8984/19/28/282201

DO - 10.1088/0953-8984/19/28/282201

M3 - Journal article

VL - 19

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

IS - 28

M1 - 282201

ER -