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Coherent spinor dynamics in a spin-1 Bose condensate
Open accessAbstract
Collisions in a thermal gas are perceived as random or incoherent as a consequence of the large numbers of initial and final quantum states accessible to the system. In a quantum gas, for example, a Bose–Einstein condensate or a degenerate Fermi gas, the phase space accessible to low-energy collisions is so restricted that collisions become coherent and reversible. Here, we report the observation of coherent spin-changing collisions in a gas of spin-1 bosons. Starting with condensates occupying two spin states, a condensate in the third spin state is coherently and reversibly created by atomic collisions. The observed dynamics are analogous to Josephson oscillations in weakly connected superconductors and represent a type of matter–wave four-wave mixing. The spin-dependent scattering length is determined from these oscillations to be −1.45(32) bohr. Finally, we demonstrate coherent control of the evolution of the system by applying differential phase shifts to the spin states using magnetic fields.
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Cites
Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
Greiner, M., Mandel, O., Esslinger, T., Hänsch, T. W., & Bloch, I. (2002) · Nature · doi:10.1038/415039a · Cited by 5,935
Cited by
Colloquium: Nonequilibrium dynamics of closed interacting quantum systems
Polkovnikov, A., Sengupta, K., Silva, A., & Vengalattore, M. (2011) · Reviews of Modern Physics · doi:10.1103/revmodphys.83.863 · Cited by 2,562
Metadata
- Authors
- Chang, M.-S., Qin, Q., Zhang, W., You, L., & Chapman, M. S.
- Venue
- Nature Physics
- Published
- 2005-10-30
- Volume
- 1
- Issue
- 2
- Pages
- 111-116
- ISSN
- 1745-2473 (ISSN-L)
- 1745-2481
- OpenAlex
- W1966171552
- Cited by
- 402
- References
- 1
- FWCI
- 12.30
- Type
- journal article
- Language
- en
- Open access
- green
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
