Spin-flip transitions between Zeeman sublevels in semiconductor quantum dots

By A. Khaetskii, Yuli V. Nazarov. 2000

380 citations recorded by the source corpus.

We have studied spin-flip transitions between Zeeman sublevels in GaAs electron quantum dots. Several different mechanisms which originate from spin-orbit coupling are shown to be responsible for such processes. It is shown that spin-lattice relaxation for the electron localized in a quantum dot is much less effective than for the free electron. The spin-flip rates due to several other mechanisms not related to the spin-orbit interaction are also estimated.

Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/a1d94e7d403fab0bb621476dc91015f7f6ff8490

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In Atomic and Molecular Physics, and Optics

In Electrical and Electronic Engineering

Citations in the corpus

Review of performance metrics of spin qubits in gated semiconducting nanostructures (2021, background): “For a spin qubit, this time can be made very long by: isolating the qubit from reservoirs, so that the electron does not escape the dot; minimizing its dipole moment, so that the qubit couples weakly to phonons; and decreasing the transition energy, typically using a lower magnetic field, so that th”
Optically programmable electron spin memory using semiconductor quantum dots (2004, background): “of such quantum dots suppresses coupling of the spin to the solid-state quantum dot environmen”
Fault-tolerant architecture for quantum computation using electrically controlled semiconductor spins (2005, background): “An external magnetic field produces an energy gap between the unused states and the logical subspace, thereby suppressing spin-flip error”
Spins in few-electron quantum dots (2006, background): “However, both mechanisms have been estimated to be much less efficient than the mechanism via admixing of spin and orbitals by the spin-orbit interaction (Khaetskii and Nazarov, 2000, 2001).”
Decoherence in solid-state qubits (2008, background): “Phonon-induced relaxation in semiconductor quantum dots has attracted some attention from a theoretical point of view for the first time in [18, 19 ].”
1 / f noise: Implications for solid-state quantum information (2013, methodology): “Starting from (Khaetskii and Nazarov, 2000, 2001), the phonon-induced relaxation was extensively studied.”
Spin qubits in graphene quantum dots (2006, background): “In such devices, the major sources of spin decoherence have been identified as the spin-orbit interaction, coupling the spin to lattice vibrations [6, 7,8], and the hyperfine interaction of the electron spin with the surrounding nuclear spins [9, 10, 11, 12, 13, 14].”