Measurements of nuclear spin dynamics by spin-noise spectroscopy

Ryzhov, I. I.; Poltavtsev, S. V.; Kavokin, K. V.; Glazov, M. M.; Kozlov, G. G.; Vladimirova, Maria; Scalbert, D.; Cronenberger, Steeve; Kavokin, Alexey; Lemaı̂tre, A.; Bloch, J.; Zapasskiĭ, V. S.

doi:10.1063/1.4922771

Cited by 44 publications

(53 citation statements)

References 31 publications

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“…The nuclear spin fluctuations determine the electron spin noise spectra in quantum dots [13,14]. The nuclear spin dynamics was revealed in the specially designed [15] experiments: The nuclear spins were first polarized, and afterwards the nuclear spin relaxation has been monitored via the electron spin noise [16,17].…”

Section: Introductionmentioning

confidence: 99%

Nuclear spin noise in the central spin model

2018

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We study theoretically the fluctuations of the nuclear spins in quantum dots employing the central spin model which accounts for the hyperfine interaction of the nuclei with the electron spin. These fluctuations are calculated both with an analytical approach using homogeneous hyperfine couplings (box model) and with a numerical simulation using a distribution of hyperfine coupling constants. Both approaches are in good agreement. The box model serves as a benchmark with low computational cost that explains the basic features of the nuclear spin noise well. We also demonstrate that the nuclear spin noise spectra comprise a two-peak structure centered at the nuclear Zeeman frequency in high magnetic fields with the shape of the spectrum controlled by the distribution of the hyperfine constants. This allows for a direct access to this distribution function through nuclear spin noise spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Nuclear spin noise in the central spin model

2018

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“…During the last years, this technique has revealed a number of unique capabilities [6][7][8][9]. Specifically, the SNS made it possible to observe resonant magnetic susceptibility of nanosystem (quantum wells, quantum dots), inaccessible for the conventional EPR spectroscopy [10,11], to examine magnetization dynamics of nuclei [12,13] and to investigate nonlinear phenomena in such systems [14][15][16][17]. The SNS technique also allows one to distinguish between homogeneously and inhomogeneously broadened lines of optical transitions [18,19] or to measure homogeneous linewidth in an inhomogeneously broadened system using multiprobe noise technique [20]; intensity modulation of the probe beam made it possible to expand the frequency range of signals detected in SNS up to microwave frequencies [21,22].…”

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confidence: 99%

Spin-alignment noise in atomic vapor

Фомин

Petrov

Kozlov

et al. 2020

Phys. Rev. Research

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In the conventional spin noise spectroscopy, the probe laser light monitors fluctuations of the spin orientation of a paramagnet revealed as fluctuations of its gyrotropy, i.e., circular birefringence. For spins larger than 1/2, there exists spin arrangement of a higher order-the so-called spin alignment-which also exhibits spontaneous fluctuations. We show theoretically and experimentally that alignment fluctuations manifest themselves as the noise of the linear birefringence. In a magnetic field, the spin-alignment fluctuations, in contrast to those of spin orientation, show up as the noise of the probe-beam ellipticity at the double Larmor frequency, with the most efficient geometry of its observation being the Faraday configuration with the light propagating along the magnetic field. We have detected the spin-alignment noise in a cesium-vapor cell probed at the wavelength of D2 line (852.3 nm). The magnetic-field and polarization dependence of the ellipticity noise are in full agreement with the developed theory.

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“…[4]) has considerably progressed during recent years [5][6][7][8][9]. The application of modern optical techniques like Faraday rotation [10,11], spin noise [12,13] and time-resolved photoluminescence [6,7], combined with more traditional techniques of magneto-optical spectroscopy and nuclear magnetic resonance (NMR) [14,15], gave the opportunity to identify the basic mechanisms of spin and energy relaxation in the intertwined spin systems of nuclei and resident charge carriers [16].…”

Section: Introductionmentioning

confidence: 99%

Subsecond nuclear spin dynamics in n -GaAs

et al. 2019

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We use time-resolved detection of the Hanle effect and polarized photoluminescence with dark intervals to investigate the buildup and decay of the spin polarization of nuclei interacting with donor-bound electrons indoped GaAs. Strong hyperfine coupling defines the millisecond timescale of the spin dynamics of these nuclei, as distinct from the nuclei far from impurity centers, characterized by a thousand times longer spin-relaxation time. The dynamics of spin polarization and relaxation attributed to the nuclei inside the donor orbit is observed on the time scale from 200 to 425 ms.

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Measurements of nuclear spin dynamics by spin-noise spectroscopy

Cited by 44 publications

References 31 publications

Nuclear spin noise in the central spin model

Nuclear spin noise in the central spin model

Spin-alignment noise in atomic vapor

Subsecond nuclear spin dynamics in n -GaAs

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