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Molecular ProbeoftheBCS/BECCrossover in6Li

Guthrie B. Partridge, Kevin E. Strecker, Michael W. Jack, G Hulet Randall

Published Jan 1, 2005• 0 citations
OpenAlex

Abstract

We haveproduced amolecular Bose-Einstein condensate fromfermionic 6Liatoms. Optical molecular spectroscopy isusedtoprobe themany-body state intheBCS/BECcrossover region. Preliminary results indicate that themolecular contribution ismuchlarger thanexpected. © 2004Optical Society ofAmerica OCIScodes:(020.0020) Atomicandmolecularphysics; (020.7010) Trapping

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We haveproduced amolecular Bose-Einstein condensate fromfermionic 6Liatoms. Optical molecular spectroscopy isusedtoprobe themany-body state intheBCS/BECcrossover region. Preliminary results indicate that themolecular contribution ismuchlarger thanexpected. © 2004Optical Society ofAmerica OCIScodes:(020.0020) Atomicandmolecularphysics; (020.7010) Trapping
Wereport theobservation oflong-lived quantum beats inquantum dots(ensemble andsingle) duetoelectron spincoherence, resulting fromstimulated Ramantransition aswell asspontaneous radiative decay ofthetrion state. © 2004Optical Society ofAmerica OCIScodes:(300.6240) Coherent transient spectroscopy; (300.6420) Nonlinear spectroscopy; (300.6470) Semi- conductors spectroscopy Theelectron spininquantumdots(QD's) isapromising candidate foraqubit forquantuminformation processing duetoitslonglifetime andanticipated robust coherence (1). Suchstructures havefeatured in numerous proposals using ultrafast optical coupling tocoherently manipulate thespinstates. Inthis paper, wedemonstrate suchcoupling andfindanewcontribution tothecoherence observed through quantum beats.