Generation of entangled photon pairs by semiconductor quantum dots in a structure of quantum cellular automata

M. Feng, J. H. An, Wei-Min Zhang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We propose a unique scheme to generate entangled photon pairs by six semiconductor quantum dots in a structure of quantum cellular automata. By means of interdot electronic tunneling, single-electron spin manipulation, and auxiliary excitons, we can convert the entanglement from the charge degrees of freedom of the electrons to the spin degrees of freedom of the electrons, and then to the polarization of the photons. Our scheme presents a source of entangled photon pairs without using spin-spin coupling, which could work repeatedly, deterministically and efficiently. Both the experimental challenge and the feasibility with present technologies are discussed. In comparison with former relevant work, our proposal not only gives an alternative method to generate entangled photons, but is applicable to other quantum information processing tasks with free electrons.

Original languageEnglish
Article number326215
JournalJournal of Physics Condensed Matter
Volume19
Issue number32
DOIs
Publication statusPublished - 2007 Aug 15

Fingerprint

cellular automata
Cellular automata
Semiconductor quantum dots
Photons
quantum dots
Electrons
photons
degrees of freedom
spin-spin coupling
Electron tunneling
Excitons
electron spin
free electrons
Light sources
proposals
manipulators
electrons
excitons
Polarization
polarization

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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Generation of entangled photon pairs by semiconductor quantum dots in a structure of quantum cellular automata. / Feng, M.; An, J. H.; Zhang, Wei-Min.

In: Journal of Physics Condensed Matter, Vol. 19, No. 32, 326215, 15.08.2007.

Research output: Contribution to journalArticle

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