Fast preparation of single hole spin in InAs/GaAs quantum dot in Voigt geometry magnetic field

Abstract

The preparation of a coherent heavy-hole spin via ionization of a spin-polarized electron-hole pair in an InAs/GaAs quantum dot in a Voigt geometry magnetic field is investigated. For a dot with a 17 ueV bright-exciton fine-structure splitting, the fidelity of the spin preparation is limited to 0.75, with optimum preparation occurring when the effective fine-structure of the bright-exciton matches the in-plane hole Zeeman energy. In principle, higher fidelities can be achieved by minimizing the bright-exciton fine-structure splitting.

8 pages, 10 figs, published PRB 85 155310 (2012)

References in corpus (9)

• Phonon induced Rabi frequency renormalization of optically driven single InGaAs/GaAs quantum dots
• Observation of extremely slow hole spin relaxation in self-assembled quantum dots
• Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots
• Magnetic-field-induced reduction of the exciton polarization splitting in InAs quantum dots
• Inversion of exciton level splitting in quantum dots
• Hole - Nuclear Spin Interaction in Quantum Dots
• Fast optical preparation, control and read-out of single quantum dot spin
• Two qubit conditional quantum logic operation in a single self-assembled quantum dot
• Single electron-spin memory with a semiconductor quantum dot

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• Probing the dark exciton states of a single quantum dot using photocurrent spectroscopy in magnetic fields
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• Controlled tunneling induced dephasing of Rabi rotations for ultra-high fidelity hole spin initialization
• All electrically controlled quantum gates for single heavy hole spin qubits
• Anisotropies of the g-factor tensor and diamagnetic coefficient in crystal-phase quantum dots in InP nanowires
• Hole spin-flip transitions in a self-assembled quantum dot
• Electron and hole g tensors of neutral and charged excitons in single quantum dots by high-resolution photocurrent spectroscopy
• Topology driven g-factor tuning in type-II quantum dots
• Symmetry induced hole-spin mixing in quantum dot molecules
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• Ultrafast electrical control of a resonantly driven single photon source
• Homogeneous Linewidth Narrowing of the Charged Exciton via Nuclear Spin Screening in an InAs/GaAs Quantum Dot Ensemble
• Precise simulation for single-hole spin control in semiconductor quantum dots
• Tuning the carrier tunneling in a single quantum dot with a magnetic field in Faraday geometry
• Spin-orbit-induced hole spin relaxation in a quantum dot molecule: the effect of $s$-$p$ coupling
• Passive stabilization of hole spin qubit using optical Stark effect