Europhys. Lett., 63 (1) , pp. 21-27 (2003)
Coherent fluorescence resonance energy transfer: Construction of nonlocal multiparticle entangled states and quantum computingS. 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 . 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