Controlled doping of a bosonic quantum gas with single neutral atoms
| Autor: | Daniel Mayer, Tobias Lausch, Artur Widera, Steve Haupt, Daniel Adam, Jens Nettersheim, Felix Schmidt, Jennifer Koch, Quentin Bouton |
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| Rok vydání: | 2018 |
| Předmět: |
Atomic Physics (physics.atom-ph)
FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas law.invention Physics - Atomic Physics symbols.namesake law Impurity Condensed Matter::Superconductivity 0103 physical sciences Physics::Atomic Physics 010306 general physics Physics Condensed Matter::Quantum Gases Optical lattice Quantum Physics Energetic neutral atom Doping Condensed Matter Physics Atomic and Molecular Physics and Optics Elastic collision Thermalisation Quantum Gases (cond-mat.quant-gas) symbols Condensed Matter::Strongly Correlated Electrons Atomic physics Raman spectroscopy Condensed Matter - Quantum Gases Quantum Physics (quant-ph) Bose–Einstein condensate |
| DOI: | 10.48550/arxiv.1805.01313 |
| Popis: | We report on the experimental doping of a $^{87}$Rubidium (Rb) Bose-Einstein condensate (BEC) with individual neutral $^{133}$Cesium (Cs) atoms. We discuss the experimental tools and procedures to facilitate Cs-Rb interaction. First, we use degenerate Raman side-band cooling of the impurities to enhance the immersion efficiency for the impurity in the quantum gas. We identify the immersed fraction of Cs impurities from the thermalization of Cs atoms upon impinging on a BEC, where elastic collisions lead to a localization of Cs atoms in the Rb cloud. Second, further enhancement of the immersion probability is obtained by localizing the Cs atoms in a species-selective optical lattice and subsequent transport into the Rb cloud. Here, impurity-BEC interaction is monitored by position and time resolved three-body loss of Cs impurities immersed into the BEC. This combination of experimental methods allows for the controlled doping of a BEC with neutral impurity atoms, paving the way to impurity aided probing and coherent impurity-quantum bath interaction. |
| Databáze: | OpenAIRE |
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