Controllable Anisotropic Exchange Coupling between Spin Qubits in Quantum Dots
Controllable Anisotropic Exchange Coupling between Spin Qubits in Quantum Dots
The exchange coupling between quantum dot spin qubits is isotropic, which restricts the types of quantum gates that can be formed. Here, we propose a method for controlling anisotropic interactions between spins arranged in a bus geometry. The symmetry is broken by an external magnetic field, resulting in $XXZ$-type interactions …