Spin-noise spectroscopy under resonant optical probing conditions: Coherent and nonlinear effects

Journal Article · Sat Oct 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.043851· OSTI ID:22093407

Horn, H.; Mueller, G. M.; Huebner, J.; Oestreich, M. ^[1]; Rasel, E. M. ^[2]; Santos, L. ^[3]

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1. Institute for Solid State Physics, Leibniz Universitaet Hannover, Appelstrasse 2, D-30167 Hannover (Germany)
2. Institute for Quantum Optics, Leibniz Universitaet Hannover, Welfengarten 1, D-30167 Hannover (Germany)
3. Institute for Theoretical Physics, Leibniz Universitaet Hannover, Appelstrasse 2, D-30167 Hannover (Germany)

Highly sensitive Faraday rotation spectroscopy is used to measure the fluctuating magnetization noise of noninteracting rubidium atoms under resonant and nonresonant optical probing conditions. The spin-noise frequency spectra, in conjunction with the probe light detuning with respect to the D{sub 2} transition, reveal clear signatures of coherent coupling of the participating electronic levels. The results are explained by extended Bloch equations, including homogeneous and inhomogeneous broadening mechanisms. Our measurements further indicate that spin noise originating from excited states is governed at high intensities by collective effects.

• OSTI ID: 22093407
• Journal Information: Physical Review. A, Vol. 84, Issue 4; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BLOCH EQUATIONS
COUPLING
ELECTRONIC STRUCTURE
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FARADAY EFFECT
MAGNETIZATION
NOISE
NONLINEAR PROBLEMS
PROBES
RUBIDIUM
SPECTROSCOPY
SPIN
VISIBLE RADIATION