Multitudes of Stable States in a Periodically Driven Electron-Nuclear Spin System in a Quantum Dot

Abstract

The periodical modulation of circularly polarized light with a frequency close to the electron spin resonance frequency induces a sharp change of the single electron spin orientation. Hyperfine interaction provides a feedback, thus fixing the precession frequency of the electron spin in the external and the Overhauser field near the modulation frequency. The nuclear polarization is bidirectional and the electron-nuclear spin system (ENSS) possesses a few stable states. A similar frequency-locking effect exists for two-color and mode-locked excitations, too. However, the pulsed excitation with mode locked laser brings about the multitudes of stable states in ENSS in a quantum dot. The resulting precession frequencies of the electron spin differ in these states by the multiple of the modulation frequency. Under such conditions ENSS represents a digital frequency converter with more than a hundred stable channels.

28 pages, 4 Figures

References in corpus (3)

• Nuclear Tuning and Detuning of the Electron Spin Resonance in a Quantum Dot
• Fine structure and optical pumping of spins in individual semiconductor quantum dots
• The Nuclear Spin Nanomagnet

Cited by in corpus (14)

• Coherent spin dynamics of electrons and excitons in nanostructures
• Electron spin synchronization induced by optical nuclear magnetic resonance feedback
• Non-equilibrium nuclear spin distribution function in quantum dots subject to periodic pulses
• Suppression of nuclear spin fluctuations in an InGaAs quantum dot ensemble by GHz-pulsed optical excitation
• Decay and revival of electron spin polarization in an ensemble of (In,Ga)As quantum dots
• Universal nuclear focusing of confined electron spins
• Inhomogeneous nuclear spin polarization induced by helicity-modulated optical excitation of fluorine-bound electron spins in ZnSe
• Two-laser dynamic nuclear polarization with semiconductor electrons: feedback, suppressed fluctuations, and bistability near two-photon resonance
• Stabilizing nuclear spins around semiconductor electrons via the interplay of optical coherent population trapping and dynamic nuclear polarization
• Spin-related phenomena in two-dimensional hopping regime in magnetic field
• Nuclear spin polarization in a single quantum dot pumped by two laser beams
• Electron Spin Noise under the Conditions of Nuclei Induced Frequency Focusing
• Shielding of external magnetic field by dynamic nuclear polarization in (In,Ga)As quantum dots
• Discretizing the Bistability of Mode-Locked Electron Spin Precession: An Overhauser Field Hysteresis Manifestation