Nuclear frequency focusing in periodically pulsed semiconductor quantum dots described by infinite classical central spin models

Abstract

The coherence of an electronic spin in a semiconductor quantum dot decays due to its interaction with the bath of nuclear spins in the surrounding isotopes. This effect can be reduced by subjecting the system to an external magnetic field and by applying optical pulses. By repeated pulses in long trains the spin precession can be synchronized to the pulse period $T_{\text{R}}$. This drives the nuclear spin bath into states far from equilibrium leading to nuclear frequency focusing. In this paper, we use an efficient classical approach introduced in Phys. Rev. B $\text{96}$, 054415 (2017) to describe and to analyze this nuclear focusing. Its dependence on the effective bath size and on the external magnetic field is elucidated in a comprehensive study. We find that the characteristics of the pulse as well as the nuclear Zeeman effect influence the behavior decisively.

arXiv comment16 pages, 22 figures

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Cited by in corpus (12)

• Magnetic field dependence of the electron spin revival amplitude in periodically pulsed quantum dots
• Dynamic mean-field theory for dense spin systems at infinite temperature
• Spin inertia and polarization recovery in quantum dots: Role of pumping strength and resonant spin amplification
• Interplay of spin mode locking and nuclei-induced frequency focusing in quantum dots
• Quantum Coherence from Periodic Driving with Laser Pulses and Decay
• Cross-correlation spectra in interacting quantum dot systems
• Driven dynamics of a quantum dot electron spin coupled to bath of higher-spin nuclei
• Nuclear magnetic resonance spectroscopy of nonequilibrium steady states in quantum dots
• Resonant spin amplification in Faraday geometry
• Simulation of nonequilibrium spin dynamics in quantum dots subjected to periodic laser pulses
• Influence of quadrupolar interaction on NMR spectroscopy
• Truncated Wigner approximation for the bosonic model of large spin baths