Abstract
We examine a generic three level mechanism of quantum computation in which all fundamental single and double qubit quantum logic gates are operating under the effect of adiabatically controllable static (radiation free) bias couplings between the states. Under the time evolution imposed by these bias couplings the quantum state cycles between the two degenerate levels in the ground state and the quantum gates are realized by changing Hamiltonian at certain time intervals when the system collapses to a two state subspace. We propose a physical implementation of the mechanism using Aharonov-Bohm persistent-current loops in crossed electric and magnetic fields, with the output of the loop read out by using a quantum Hall effect aided mechanism.
| Original language | English |
|---|---|
| Pages (from-to) | 219-226 |
| Number of pages | 8 |
| Journal | European Physical Journal B |
| Volume | 30 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Nov 2002 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2002.
Funding
We acknowledge helpful discussions on particular parts of this paper with B.L. Altshuler, D.V. Averin, and K. von Klitzing. One of authors (I.O.K.) acknowledges hospitality of Department of Physics, University of Naples “Federico II” for part of work on subject of the paper. T.H. acknowledges the support by TÜBİTAK (The Scientific and Technical Research Council of Turkey) as a part of the project TBAG-2111 101T136-TÜBİTAK.
| Funders | Funder number |
|---|---|
| Türkiye Bilimsel ve Teknolojik Araştirma Kurumu | TBAG-2111 101T136-TÜBİTAK |
Keywords
- 03.67.-a quantum information
- 03.67.Lx quantum computation
- 68.65.-k low-dimensional, mesoscopic, and nanoscale systems: structure and nonelectronic properties
- 68.65.Hb quantum dots