Quantum computation and the production of entangled photons using coupled quantum dots
| Type of Publication: | Journal article |
| Author: | Gywat, Oliver; Burkard, Guido; Loss, Daniel |
| Year of publication: | 2002 |
| Published in: | Superlattices and Microstructures ; 31 (2002), 2-4. - pp. 127-140. - ISSN 0749-6036. - eISSN 1096-3677 |
| DOI (citable link): | https://dx.doi.org/10.1006/spmi.2002.1034 |
| Summary: |
We review recent theoretical progress on the use of electron spins as qubits in coupled semiconductor quantum dots for quantum information processing. We discuss the spin exchange mechanism and its microscopic origin in both laterally and vertically tunnel-coupled quantum dots and explain how it can be used to implement the quantum XOR gate which, in combination with single spin rotations, allows to perform arbitrary quantum computations. In addition to their functionality as a quantum gate, coupled quantum dots can act as a source for photon pairs in entangled polarization states which are useful for quantum communication. We describe a mechanism for the production of such entangled photon pairs via a biexciton state in tunnel-coupled quantum dots.
|
| Subject (DDC): | 530 Physics |
| Keywords: | quantum computation, quantum communication, spin, entanglement, quantum dots |
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GYWAT, Oliver, Guido BURKARD, Daniel LOSS, 2002. Quantum computation and the production of entangled photons using coupled quantum dots. In: Superlattices and Microstructures. 31(2-4), pp. 127-140. ISSN 0749-6036. eISSN 1096-3677. Available under: doi: 10.1006/spmi.2002.1034
@article{Gywat2002Quant-29152, title={Quantum computation and the production of entangled photons using coupled quantum dots}, year={2002}, doi={10.1006/spmi.2002.1034}, number={2-4}, volume={31}, issn={0749-6036}, journal={Superlattices and Microstructures}, pages={127--140}, author={Gywat, Oliver and Burkard, Guido and Loss, Daniel} }
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