Spin noise at electron paramagnetic resonance

Poshakinskiy, A. V.; Tarasenko, S. A.

doi:10.1103/physrevb.101.075403

Cited by 18 publications

(12 citation statements)

References 22 publications

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“…New techniques giving access both to the spin g factor and relaxation times at arbitrary magnetic fields have been very actively developed. These are resonant spin amplification 4 , with its single-beam modification 5 , and spin noise spectroscopy 6 – 8 , which was recently improved to increase its sensitivity, extend the accessible range of magnetic fields 9 – 11 , enable determination of the homogeneous spin relaxation time 12 – 14 , and even make it sensitive to spin diffusion 15 . Nevertheless, the most powerful optical technique is pump-probe Faraday/Kerr rotation 16 – 19 , which through the interband electron transitions allows one to directly address the dynamics of a spin ensemble with (sub)picosecond resolution in a broad temporal range 20 , 21 .…”

Section: Introductionmentioning

confidence: 99%

Optical detection of electron spin dynamics driven by fast variations of a magnetic field: a simple method to measure $$T_1$$, $$T_2$$, and $$T_2^*$$ in semiconductors

Belykh

Yakovlev

Bayer

2020

Sci Rep

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We develop a simple method for measuring the electron spin relaxation times , and in semiconductors and demonstrate its exemplary application to n -type GaAs. Using an abrupt variation of the magnetic field acting on electron spins, we detect the spin evolution by measuring the Faraday rotation of a short laser pulse. Depending on the magnetic field orientation, this allows us to measure either the longitudinal spin relaxation time or the inhomogeneous transverse spin dephasing time . In order to determine the homogeneous spin coherence time , we apply a pulse of an oscillating radiofrequency (rf) field resonant with the Larmor frequency and detect the subsequent decay of the spin precession. The amplitude of the rf-driven spin precession is significantly enhanced upon additional optical pumping along the magnetic field.

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Section: Introductionmentioning

confidence: 99%

Optical detection of electron spin dynamics driven by fast variations of a magnetic field: a simple method to measure $$T_1$$, $$T_2$$, and $$T_2^*$$ in semiconductors

Belykh

Yakovlev

Bayer

2020

Sci Rep

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“…We illustrate experimentally theoretical predictions taking Cs atomic vapour as testbed, because in this case the multiplet corresponding to the total spin S = 3, 4 is easily accessible by the spin noise spectroscopy [31,32]. The results presented in the work can open up a way for system sublevels optical control, which can be executed by combination with radiofrequency addressing of the states [33] or 'active' spin noise spectroscopy [34].…”

mentioning

confidence: 89%

Nonlinear spectroscopy of high-spin fluctuations

Fomin,

Petrov,

Ryzhov

et al. 2021

Preprint

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“…The Mollow triplet structure has been observed in atomic beams [3], ions [4], single molecules [5], quantum dots [6][7][8][9], superconducting qubits [10], and cold atoms [11]. Its potential applications, such as heralded single-photon sources [12], quantum sensing [13][14][15], and spin noise characterization [16], make it a versatile tool in physics.…”

Section: Introductionmentioning

confidence: 99%

Observation of the high-order Mollow triplet by quantum mode control with concatenated continuous driving

2021

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The Mollow triplet is a fundamental signature of quantum optics and has been observed in numerous quantum systems. Although it arises in the "strong driving" regime of the quantized field, where the atoms undergo coherent oscillations, it can be typically analyzed within the rotating wave approximation. Here we report the first observation of high-order effects in the Mollow triplet structure due to strong driving. In experiments, we explore the regime beyond the rotating wave approximation using concatenated continuous driving that has less stringent requirements on the driving field power. We are then able to reveal additional transition frequencies, shifts in energy levels, and corrections to the transition amplitudes. In particular, we find that these amplitudes are more sensitive to high-order effects than the frequency shifts and that they still require an accurate determination in order to achieve high-fidelity quantum control. The experimental results are validated by Floquet theory, which enables the precise numerical simulation of the evolution and further provides an analytical form for an effective Hamiltonian that approximately predicts the spin dynamics beyond the rotating wave approximation.

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Spin noise at electron paramagnetic resonance

Cited by 18 publications

References 22 publications

Optical detection of electron spin dynamics driven by fast variations of a magnetic field: a simple method to measure $$T_1$$, $$T_2$$, and $$T_2^*$$ in semiconductors

Optical detection of electron spin dynamics driven by fast variations of a magnetic field: a simple method to measure $$T_1$$, $$T_2$$, and $$T_2^*$$ in semiconductors

Nonlinear spectroscopy of high-spin fluctuations

Observation of the high-order Mollow triplet by quantum mode control with concatenated continuous driving

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