Inter-species spin-noise correlations in hot atomic vapors
- URL: http://arxiv.org/abs/2308.13090v2
- Date: Sun, 15 Oct 2023 10:01:28 GMT
- Title: Inter-species spin-noise correlations in hot atomic vapors
- Authors: K. Mouloudakis, F. Vouzinas, A. Margaritakis, A. Koutsimpela, G.
Mouloudakis, V. Koutrouli, M. Skotiniotis, G. P. Tsironis, M. Loulakis, M. W.
Mitchell, G. Vasilakis, I. K. Kominis
- Abstract summary: We report an experimental and theoretical study of spin noise correlations in a $87$Rb-$133$Cs unpolarized alkali-metal vapor dominated by spin-exchange collisions.
We observe strong unequal-time inter-species correlations and account for these with a first-principles theoretical model.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We report an experimental and theoretical study of spin noise correlations in
a $^{87}$Rb-$^{133}$Cs unpolarized alkali-metal vapor dominated by
spin-exchange collisions. We observe strong unequal-time inter-species
correlations and account for these with a first-principles theoretical model.
Since the two atomic species have different spin precession frequencies, the
dual-species vapor enables the use of an additional experimental handle, the
applied magnetic field, for untangling various sub-types of spin correlations.
In particular, the measured cross-correlation and auto-correlation spectra shed
light on a number of spin-dynamic effects involving intra-atom, inter-atom,
intra-species and inter-species correlations. Cross-correlation coefficients
exceeding $60\%$ have been observed at low-magnetic fields, where the two spin
species couple strongly via spin-exchange collisions. The understanding of such
spontaneously generated correlations can motivate the design of
quantum-enhanced measurements with single or multi-species spin-polarized
alkali-metal vapors used in quantum sensing applications.
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