Theory of anisotropic exchange in laterally coupled quantum dots

Abstract

The effects of spin-orbit coupling on the two-electron spectra in lateral coupled quantum dots are investigated analytically and numerically. It is demonstrated that in the absence of magnetic field the exchange interaction is practically unaffected by spin-orbit coupling, for any interdot coupling, boosting prospects for spin-based quantum computing. The anisotropic exchange appears at finite magnetic fields. A numerically accurate effective spin Hamiltonian for modeling spin-orbit-induced two-electron spin dynamics in the presence of magnetic field is proposed.

4 pages, 3 figures; paper rewritten

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Cited by in corpus (36)

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• Spin-orbit coupling and anisotropic exchange in two-electron double quantum dots
• Footprints of hyperfine, spin-orbit, and decoherence effects in Pauli spin blockade
• Theory of Spin Relaxation in Two-Electron Lateral Coupled Quantum Dots
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• Theory of Spin Relaxation in Two-Electron Lateral Coupled Si/SiGe Quantum Dots
• Optimal geometry of lateral GaAs and Si/SiGe quantum dots for electrical control of spin qubits
• Control of the Two-Electron Exchange Interaction in a Nanowire Double Quantum Dot
• Spin Manipulation and Relaxation in Spin-Orbit Qubits
• Anisotropic exchange coupling in a nanowire double quantum dot with strong spin-orbit coupling
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• Electrical control of a spin qubit in InSb nanowire quantum dots: strongly suppressed spin relaxation in high magnetic field
• Inverted Singlet-Triplet Qubit Coded on a Two-Electron Double Quantum Dot
• Control of a spin qubit in a lateral GaAs quantum dot based on symmetry of gating potential
• Optical measurement and modeling of interactions between two hole or two electron spins in coupled InAs quantum dots
• Spin ordering in magnetic quantum dots: From core-halo to Wigner molecules
• Significance of an external magnetic field on two-phonon processes in gated lateral semiconductor quantum dots
• Time dependent configuration interaction simulations of spin swap in spin orbit coupled double quantum dots
• Coupling of bonding and antibonding electron orbitals in double quantum dots by spin-orbit interaction
• Spin-Orbit Interaction Enabled High-Fidelity Two-Qubit Gates
• Electric control of tunneling energy in graphene double dots
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• Dynamical topological quantum computation using spin pulse control in the Heisenberg model
• Suppression of Kondo-assisted co-tunneling in a spin-1 quantum dot with Spin-Orbit interaction
• Cloaking the magnons
• Spin Hot Spots in Single-Electron GaAs-based Quantum Dots
• Variational quantum compiling for three-qubit gates design in quantum dots
• Dressed basis sets for the modeling of exchange interactions in double quantum dots
• Spin separation and exchange for quantum dots in the Overhauser field
• Comparison of methods for computing the exchange energy in laterally coupled quantum dots