| Autor: |
Fang, Fang, Isaacs, Joshua A., Smull, Aaron, Horn, Katinka, Basabe, L. Dalila Robledo-De, Wang, Yimeng, Greene, Chris H., Stamper-Kurn, Dan M. |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Research 2, 032054 (2020) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevResearch.2.032054 |
| Popis: |
We observe spin transfer within a non-degenerate heteronuclear spinor atomic gas comprised of a small $^7$Li population admixed with a $^{87}$Rb bath, with both elements in their $F=1$ hyperfine spin manifolds and at temperatures of 10's of $\mu$K. Prepared in a non-equilibrium initial state, the $^7$Li spin distribution evolves through incoherent spin-changing collisions toward a steady-state distribution. We identify and measure the cross-sections of all three types of spin-dependent heteronuclear collisions, namely the spin-exchange, spin-mixing, and quadrupole-exchange interactions, and find agreement with predictions of heteronuclear $^7$Li-$^{87}$Rb interactions at low energy. Moreover, we observe that the steady state of the $^7$Li spinor gas can be controlled by varying the composition of the $^{87}$Rb spin bath with which it interacts. |
| Databáze: |
arXiv |
| Externí odkaz: |
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