Berry-phase induced entanglement of hole-spin qubits in a microwave cavity

Abstract

Hole-spins localized in semiconductor structures, such as quantum dots or defects, serve to the realization of efficient gate-tunable solid-state quantum bits. Here we study two electrically driven spin $3/2$ holes coupled to the electromagnetic field of a microwave cavity. We show that the interplay between the non-Abelian Berry phases generated by local time-dependent electrical fields and the shared cavity photons allows for fast manipulation, detection, and long-range entanglement of the hole-spin qubits in the absence of any external magnetic field. Owing to its geometrical structure, such a scheme is more robust against external noises than the conventional hole-spin qubit implementations. These results suggest that hole-spins are favorable qubits for scalable quantum computing by purely electrical means.

4p + 9p of supplemental material

References in corpus (9)

• Driven coherent oscillations of a single electron spin in a quantum dot
• Solid state quantum memory using the 31P nuclear spin
• Spin decoherence of a heavy hole coupled to nuclear spins in a quantum dot
• Spin relaxation and decoherence of holes in quantum dots
• Observation of extremely slow hole spin relaxation in self-assembled quantum dots
• Geometrical spin dephasing in quantum dots
• Geometric phases in semiconductor spin qubits: Manipulations and decoherence
• Dispersive readout of adiabatic phases
• Pseudospin-electric coupling for holes beyond the envelope-function approximation

Cited by in corpus (3)

• Longitudinal coupling between electrically driven spin-qubits and a resonator
• Non-adiabatic Berry phase for semiconductor heavy holes under the coexistence of Rashba and Dresselhaus spin-orbit interactions
• Universal quantum operation of spin-3/2 Blume-Capel chains