Spin-selective AC Stark shifts in a charged quantum dot

Abstract

A strong, far-detuned laser can shift the energy levels of an optically active quantum system via the AC Stark effect. We demonstrate that the polarization of the laser results in a spin-selective modification to the energy structure of a charged quantum dot, shifting one spin manifold but not the other. An additional shift occurs due to the Overhauser field of the nuclear spins, which are pumped into a partially polarized state. This mechanism offers a potentially rapid, reversible, and coherent control of the energy structure and polarization selection rules of a charged quantum dot.

5 pages, 4 figures

References in corpus (11)

• Prospects for Spin-Based Quantum Computing
• Resonance fluorescence from a coherently driven semiconductor quantum dot in a cavity
• Spin-resolved quantum-dot resonance fluorescence
• A dark-field microscope for background-free detection of resonance fluorescence from single semiconductor quantum dots operating in a set-and-forget mode
• Dynamic nuclear polarization of a single charge-tunable InAs/GaAs quantum dot
• Quantum computing by optical control of electron spins
• Environment-assisted quantum control of a solid-state spin via coherent dark states
• Protecting a solid-state spin from decoherence using dressed spin states
• Observation of quantum jumps of a single quantum dot spin using sub-microsecond single-shot optical readout
• Pumping of nuclear spins by the optical solid effect in a quantum dot
• An Optical Spin Read-out Method for a Quantum Dot using the AC Stark Effect

Cited by in corpus (8)

• Quantum-Coherent Nanoscience
• Quantum sensing of photonic spin density
• Unidirectional transmission of single photons under non-ideal chiral photon-atom interactions
• Energy level shift of quantum systems via the electric Aharonov-Bohm effect
• Coherent population trapping combined with cycling transitions for quantum dot hole spins using triplet trion states
• The optical Stark shift to control the dark exciton occupation of a quantum dot in a tilted magnetic field
• Complete Stokes vector analysis with a compact, portable rotating waveplate polarimeter
• Quantum Hall-like effect for neutral particles with magnetic dipole moments in a quantum dot