Quantum Optics of Low-Dimensional Electrons in Layered Structures

  • N. Enfati
  • M. Babiker
Conference paper

Abstract

A two-level atom of excitation energy E outside a metallic half-space can couple strongly to the surface plasmons if E/ħ is closely tuned to the limiting surface plasmon frequency of the metal1. This physical situation is the simplest ‘cavity QED’ problem2 in which entangled states (linear combinations of atomic states and single surface plasmonpolariton states) can be realised, but it is, in fact, more general than the example might suggest. In low dimensional structures3 the excitation energy E could belong to an impurity atom, or be associated with a quantum well (2D) or a quantum wire (1D). A quantum dot (0D) can be regarded as the macroscopic analogue of an atom. Whenever E matches any one of a number of possible modes supported by the layered structure the spectrum of the scattered light in a light scattering experiment should exhibit a doublet in the frequency region of the resonance.

Keywords

Entangle State Quantum Wire Interface Phonon Polariton State Reststrahl Band 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    C. Mavroyannis and D. A. Hutchinson, “The interaction between a neutral molecule and a metal surface”, Solid State Commun., 23, 463 (1977)CrossRefGoogle Scholar
  2. G. Barton,“Resonance interaction between a neutral molecule and a metal surface”, Solid State Commun. 27, 95 (1978)CrossRefGoogle Scholar
  3. M. Babiker, “Coupling of molecules to surface plasmons in resonant elastic scattering”, J. Phys. C 12, 4985 (1979)CrossRefGoogle Scholar
  4. 2.
    S. Haroclie, “Cavity QED: atom-photon entanglement and mesoscopic quantum coherences”, see proceedings of this conferenceGoogle Scholar
  5. 3.
    C. Weisbuch and B. Vinter, “Quantum Semiconductor Structures” Academic: London (1991)Google Scholar
  6. 4.
    M. Babiker, N. C. Constantinou and B. K. Ridley, “A’.p versus I for coupling electrons to optical modes in quantum wells”, Phys. Rev. B48, 2236 (1993)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • N. Enfati
    • 1
  • M. Babiker
    • 1
  1. 1.Department of PhysicsUniversity of EssexColchesterUK

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