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Phys. Rev. B 71, 201201(R) (2005) [4 pages]

Verification of polarization selection rules and implementation of selective coherent manipulations of hydrogenic transitions in n-GaAs

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M. F. Doty, B. T. King, and M. S. Sherwin*
California Nanosystems Institute and Institute for Quantum Engineering, Science, and Technology, University of California, Santa Barbara, Santa Barbara, California 93106, USA

C. R. Stanley
Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow, G12 8QQ, United Kingdom

Received 24 September 2004; revised 3 December 2004; published 31 May 2005

Electrons bound to shallow donors in GaAs have orbital energy levels analogous to those of the hydrogen atom. The polarization selection rules for optical transitions between the states analogous to the 1s and 2p states of hydrogen in a magnetic field are verified using Terahertz (THz) radiation from the University of California, Santa Barbara Free Electron Laser. A polarization-selective coherent manipulation of the quantum states is demonstrated and the relevance to quantum information processing schemes is discussed.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.71.201201
DOI:
10.1103/PhysRevB.71.201201
PACS:
78.47.+p

*Electronic address: sherwin@physics.ucsb.edu

 
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