Quantitative study of spin noise spectroscopy in a classical gas of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">K</mml:mi><mml:mprescripts /><mml:none /><mml:mn>41</mml:mn></mml:mmultiscripts></mml:math>atoms

Mihaila, Bogdan; Crooker, S. A.; Rickel, D.G.; Blagoev, Krastan B.; Littlewood, P. B.; Smith, D. L.

doi:10.1103/physreva.74.043819

Cited by 36 publications

(39 citation statements)

References 29 publications

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“…In contrast, for degenerate electron systems obeying Fermi-Dirac statistics, only those electron spins within thermal energy ϳk B T of the Fermi energy ⑀ F have available phase space to fluctuate ͑all states at lower energy being occupied͒, in which case f Ͻ 1. For an ideal Fermi sea of electrons and in the absence of other correlations, 31 f → 0 as T → 0. These considerations will be discussed in Sec.…”

Section: ͑3͒mentioning

confidence: 99%

Spin noise of conduction electrons inn-type bulk GaAs

2009

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We report a comprehensive study of stochastic electron spin fluctuations-spin noise-in lightly doped ͑n-type͒ bulk GaAs, which are measured using sensitive optical magnetometry based on off-resonant Faraday rotation. Frequency spectra of electron spin noise are studied as a function of electron density, magnetic field, temperature, probe-laser wavelength and intensity, and interaction volume. Electron spin lifetimes s are inferred from the width of the spin noise spectra and are compared to direct measurements of s using conventional Hanle-effect methods. Both methods reveal a strong and similar dependence of s on the wavelength and intensity of the probe laser, highlighting the undesired influence of sub-bandgap absorption effects on the nominally "nonperturbative" spin noise measurements. As a function of temperature, the spin noise power increases approximately linearly from 1.5 to 30 K, as expected for degenerate electrons obeying Fermi-Dirac statistics, but with an additional zero-temperature offset. Finally, as the cross-sectional area of the probe laser shrinks and fewer electrons are probed, the measured Faraday rotation fluctuations due to electron spin noise are shown to increase, as expected.

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Section: ͑3͒mentioning

confidence: 99%

Spin noise of conduction electrons inn-type bulk GaAs

2009

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“…In the transparency regime, there have been many further studies on spin-noise spectroscopy [5][6][7][8]11,12]. As pointed out in [13], the strong coupling between atoms and photons in the absorption regime enables thermal atomic ensembles to be used for quantum information processing (QIP) experiments as a convenient alternative to cavity quantum electrodynamics measurements.…”

Section: Introductionmentioning

confidence: 99%

Near-resonance spin-noise spectroscopy

Chałupczak

Godun

2011

Phys. Rev. A

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Spectroscopy of atomic spin noise allows the determination of many sample properties such as energy-level structures and transverse-spin relaxation rates without the need to drive the system away from equilibrium with applied fields. Analysis of noise measurements can also reveal the processes that limit the sensitivity of a measured signal. Standard methods for spectroscopic noise measurements in atomic vapors rely on far-off-resonant optical probing. We present a method for investigating spin noise with a probe beam frequency relatively close to resonance and show how the back action of the probe on the atomic state can be subtracted from the recorded noise spectra. We verify this method experimentally by showing noise data that scale with the square root of the number of atoms, after the probe back action has been properly subtracted.

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“…SNS in semiconductors has proven itself as a very versatile and widely applicable tool for the low‐invasive investigation of the spin dynamic in a variety of semiconductor systems. In addition to the persistent and high activity, both experimentally and theoretically, of employing SNS in classical and quantum atomic gases , there is a tremendously increasing interest of extending this technique even further into the field of semiconductor physics. Recent works investigate SNS in quantum wires or spin noise of exciton polaritons in microcavities .…”

Section: Discussionmentioning

confidence: 99%

The rise of spin noise spectroscopy in semiconductors: From acoustic to GHz frequencies

Hübner

Berski

Dahbashi

et al. 2014

Physica Status Solidi (b)

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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.This article gives an overview on the advance of spin noise spectroscopy (SNS) in semiconductors in the past 8 years from the first measurements in bulk n-GaAs [Oestreich et al., Phys. Rev. Lett. 95, 216603 (2005)] up to the recent achievement of optical detection of the intrinsic spin fluctuations of a single hole confined in an individual self-assembled quantum dot [Dahbashi et al., arXiv:1306.3183 (2013]. We discuss the general technical implementation of optical SNS and the invaluable profit of the introduction of real-time fast Fourier transform analysis into the data acquisition. By now, the full spin dynamic from the milli-to picosecond timescales can be addressed by SNS and the technique quickly strides ahead to enable real quantum non-demolition measurements in semiconductors.Spin noise spectra recorded in 2005 in bulk n-GaAs with approximately 10 9 electron spins (Oestreich et al.) and 2013 (Dahbashi et al.) for a single hole spin. The integration time for the latter is more than a factor of 40 shorter due to the significant advances in the measurement technique.

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Quantitative study of spin noise spectroscopy in a classical gas ofK41atoms

Cited by 36 publications

References 29 publications

Spin noise of conduction electrons inn-type bulk GaAs

Spin noise of conduction electrons inn-type bulk GaAs

Near-resonance spin-noise spectroscopy

The rise of spin noise spectroscopy in semiconductors: From acoustic to GHz frequencies

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