Europhys. Lett.
Volume 63, Number 1, July 2003
Page(s) 21 - 27
Section General
Published online 01 June 2003
DOI: 10.1209/epl/i2003-00472-2
Europhys. Lett., 63 (1) , pp. 21-27 (2003)

Coherent fluorescence resonance energy transfer: Construction of nonlocal multiparticle entangled states and quantum computing

S. K. Sekatskii, M. Chergui and G. Dietler

Institut de Physique de la Matière Condensée, Université de Lausanne CH-1015 Lausanne, Switzerland

(Received 6 August 2002; accepted in final form 25 April 2003)

The coherent Fluorescence Resonance Energy Transfer (FRET) combined with Scanning Near-Field Optical Microscopy (SNOM) are proposed for the creation of complex and nonlocal entangled states involving hundreds of atoms. Micro- and milli-second decoherence times of the electron excitation occur for rare-earth dopant ions in crystals at low temperatures, and we show that the characteristic coherent FRET distances for such systems are of the order of 20 $\un{nm}$. Thus, both position and time precision necessary for the quantum manipulation can be attained by modern SNOM technology. Potential applications for quantum computing are discussed.

07.79.Fc - Near-field scanning optical microscopes.
03.67.Lx - Quantum computation.
42.50.-p - Quantum optics.

© EDP Sciences 2003