| MODEL OF QUBIT IN MULTI-ELECTRON QUANTUM DOT |
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L. Jacaka, J. Krasnyjb, D. Jacakc, W. Salejdaa and A. Mitu¶a aInstitute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland bInstitute of Mathematics, University of Opole, Oleska 48, Opole, Poland (on leave from Institute of Physics, University of Odessa, Odessa, Ukraine) cInstitute of Mathematics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland |
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| Received: August 25, 2000; in final form October 27, 2000 |
| The discussion of qubit for quantum computation in quantum dots technology is presented. The state-of-the-art structure of multi-electron dot is considered and the appropriate quasi-two-level system is suggested employing the singlet-triplet transition in the presence of magnetic field. The methods of qubit rotation (the write procedure) as well as two-qubit operations, as controlled-NOT, in vertically stacked dots system are analysed. |
| DOI: 10.12693/APhysPolA.99.277 PACS numbers: 73.20.Dx |