Kerridge, A;
Savory, S;
Harker, AH;
Stoneham, AM;
(2006)
Time dependent quantum simulations of two-qubit gates based on donor states in silicon.
J PHYS-CONDENS MAT
, 18
(21)
S767 - S776.
10.1088/0953-8984/18/21/S04.
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Abstract
Many quantum gate proposals make physical assumptions to ease analysis. Here we explicitly consider the effect of these assumptions for a particular two-qubit gate proposal, a cube-root-of-unity gate, in which the two qubits are donors in a semiconductor coupled via an intermediate 'control' spin. Our approach considers directly the electronic structures of the qubit and control impurity systems. We find that such gates are highly sensitive to environmental factors overlooked in analytically soluble models, but that there are regimes in which simplifying assumptions are valid and lead to high fidelity gates.
| Type: | Article |
|---|---|
| Title: | Time dependent quantum simulations of two-qubit gates based on donor states in silicon |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/0953-8984/18/21/S04 |
| Publisher version: | http://dx.doi.org/10.1088/0953-8984/18/21/S04 |
| Language: | English |
| Additional information: | Text made available to UCL Discovery by kind permission of IOP Publishing, 2012 |
| Keywords: | SELF-CONSISTENT CALCULATIONS, SHALLOW DEFECTS, SEMICONDUCTORS, COMPUTATION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/157447 |
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