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Q: Quantenoptik
Q 9: Poster: Quantum Information
Q 9.17: Poster
Dienstag, 3. April 2001, 12:30–15:00, AT2
Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles — •M. Fleischhauer1, M. Lukin2, R. Cote3, L. Duang4, D. Jaksch4, I. Cirac4, and P. Zoller4 — 1FB Physik, Univ. Kaiserslautern — 2ITAMP, Harvard-Smithsonian — 3Univ. Conneticut — 4Univ. Innsbruck
We describe a technique for manipulating quantum information stored in collective states of mesoscopic ensembles [1]. Quantum processing is accomplished by optical excitation into states with strong dipole-dipole interactions. The resulting “dipole blockade” can be used to inhibit transitions into all but singly excited collective states. This can be employed for a controlled generation of collective atomic spin states as well as non-classical photonic states and for scalable quantum logic gates. An example involving a cold Rydberg gas is analyzed.
[1] M. Lukin, M. Fleischhauer, R. Cote, L. M. Duan, D. Jaksch, J. I. Cirac and P. Zoller, quant-ph/0011028