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Proceedings Paper

Optical generation of many-spin entangled states in a quantum well
Author(s): Roberto D. Merlin; J. M. Bao; A. V. Bragas; J. K. Furdyna
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Paper Abstract

A quantum-mechanical many-particle system may exhibit non-local behavior in that measurements performed on one of the particles can affect a second one that is far apart. These so-called entangled states are crucial for the implementation of quantum information protocols and gates for quantum computation. Here, we use ultrafast optical pulses and coherent techniques to create and control spin entangled states in an ensemble of up to three non-interacting electrons bound to donors in a CdTe quantum well. Our method, relying on the exchange interaction between localized excitons and paramagnetic impurities, can in principle be applied to entangle an arbitrarily large number of spins.

Paper Details

Date Published: 25 May 2004
PDF: 14 pages
Proc. SPIE 5472, Noise and Information in Nanoelectronics, Sensors, and Standards II, (25 May 2004); doi: 10.1117/12.548108
Show Author Affiliations
Roberto D. Merlin, Univ. of Michigan (United States)
J. M. Bao, Univ. of Michigan (United States)
A. V. Bragas, Univ. of Michigan (United States)
J. K. Furdyna, Univ. of Notre Dame (United States)

Published in SPIE Proceedings Vol. 5472:
Noise and Information in Nanoelectronics, Sensors, and Standards II
Janusz M. Smulko; Yaroslav Blanter; Mark I. Dykman; Laszlo B. Kish, Editor(s)

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