Multichannel interactions of two atoms in an optical tweezer
| Autor: | Yen-Wei Lin, Jessie T. Zhang, Yichao Yu, Bo Gao, Lee R. Liu, J. D. Hood, Kang-Kuen Ni, Kenneth Wang |
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| Rok vydání: | 2019 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Quantum Physics Scattering Atomic Physics (physics.atom-ph) FOS: Physical sciences Trapping 01 natural sciences 010305 fluids & plasmas Physics - Atomic Physics Optical tweezers Quantum Gases (cond-mat.quant-gas) 0103 physical sciences Atom Physics::Atomic Physics Atomic physics 010306 general physics Ground state Condensed Matter - Quantum Gases Quantum Physics (quant-ph) |
| DOI: | 10.48550/arxiv.1907.11226 |
| Popis: | The multichannel Na-Cs interactions are characterized by a series of measurements using two atoms in an optical tweezer, along with a multichannel quantum defect theory (MQDT). The triplet and singlet scattering lengths are measured by performing Raman spectroscopy of the Na-Cs motional states and least-bound molecular state in the tweezer. Magnetic Feshbach resonances are observed for only two atoms at fields which agree well with the MQDT. Our methodology, which promotes the idea of an effective theory of interaction, can be a key step towards the understanding and the description of more complex interactions. The tweezer-based measurements in particular will be an important tool for atom-molecule and molecule-molecule interactions, where high densities are experimentally challenging and where the interactions can be dominated by intra-species processes. |
| Databáze: | OpenAIRE |
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