Optical protection of alkali-metal atoms from spin relaxation
- URL: http://arxiv.org/abs/2209.12360v1
- Date: Mon, 26 Sep 2022 01:19:29 GMT
- Title: Optical protection of alkali-metal atoms from spin relaxation
- Authors: Avraham Berrebi, Mark Dikopoltsev, Ori Katz, Or Katz
- Abstract summary: We describe a new mechanism to continuously protect alkali-metal atoms from spin relaxation using a single off-resonant optical beam.
We report an order of magnitude suppression of the spin decoherence for cesium atoms, simultaneously protecting from random spin-exchange collisions and partially also from spin-relaxation.
- Score: 5.964436882344728
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We describe a new mechanism to continuously protect alkali-metal atoms from
spin relaxation using a single off-resonant optical beam. We experimentally
demonstrate that state-selective light-shifts can synchronize the Larmor
frequencies of the two hyperfine manifolds, and by that form a unique
decoherence-free subspace. We report an order of magnitude suppression of the
spin decoherence for cesium atoms, simultaneously protecting from random
spin-exchange collisions and partially also from spin-relaxation by the
interaction with weakly-depolarizing walls. We further report an order of
magnitude improvement of the quality factor of the magnetic states. Our results
demonstrate the ability to use the multi-level structure of atoms or molecules
with accessible optical tools to engineer useful decoherence-free subspaces.
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