Geometric spin manipulation in semiconductor quantum dots
arXiv:1407.3771 · doi:10.1063/1.4871004
Abstract
We propose a method to flip the spin completely by an adiabatic transport of quantum dots. We show that it is possible to flip the spin by inducing a geometric phase on the spin state of a quantum dot. We estimate the geometric spin flip time (approximately 2 pico-sec) which turned out to be much shorter than the experimentally reported decoherence time (approx. 100 nano-sec) that would provide an alternative means of fliping the spin before reaching decoherence. It is important that both the Rashba coupling and the Dresselhaus coupling are present for inducing a phase necessary for spin flip. If one of them is absent, the induced phase is trivial and irrelevant for spin-flip.
4 pages, 3 figures
References in corpus (13)
- Driven coherent oscillations of a single electron spin in a quantum dot
- Coherent control of a single electron spin with electric fields
- Observation of Berry's Phase in a Solid State Qubit
- Electric Dipole Induced Spin Resonance in Quantum Dots
- Electrical control of spin relaxation in a quantum dot
- Fast and robust spin manipulation in a quantum dot by electric fields
- Geometric Phase and Non-Adiabatic Effects in an Electronic Harmonic Oscillator
- Geometrical spin dephasing in quantum dots
- Geometric phases in semiconductor spin qubits: Manipulations and decoherence
- Electrical control of phonon mediated spin relaxation rate in semiconductor quantum dots: the Rashba vs the Dresselhaus spin-orbit couplings
- Gate control of a quantum dot single-electron spin in realistic confining potentials: anisotropy effects
- Manipulation of single electron spin in a GaAs quantum dot through the application of geometric phases: The Feynman disentangling technique
- Manipulation of the Land g-factor in InAs quantum dots through the application of anisotropic gate potentials: Exact diagonalization, numerical and perturbation methods