Spin-exchange collisions in hot vapors create and sustain bipartite entanglement
Abstract
Spin-exchange collisions in alkali or alkali/noble gas vapors are at the basis of quantum sensing, nucleon structure studies, tests of fundamental symmetries, and medical imaging. We here show that spin-exchange collisions in hot alkali vapors naturally produce strong bipartite entanglement, which we explicitly quantify using the tools of quantum information science. This entanglement is shown to have a lifetime at least as long as the spin-exchange relaxation time, and to directly affect measurable spin noise observables. This is a formal theoretical demonstration that a hot and dense atomic vapor can support longlived bipartite and possibly higher-order entanglement.
- Publication:
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arXiv e-prints
- Pub Date:
- April 2020
- DOI:
- 10.48550/arXiv.2004.11790
- arXiv:
- arXiv:2004.11790
- Bibcode:
- 2020arXiv200411790M
- Keywords:
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- Physics - Atomic Physics;
- Quantum Physics
- E-Print:
- 5 pages, 2 figures