6533b7dbfe1ef96bd1271594
RESEARCH PRODUCT
Coupling-assisted Landau-Majorana-Stückelberg-Zener transition in a system of two interacting spin qubits
Roberto GrimaudoAntonino MessinaNikolay V. Vitanovsubject
PhysicsDephasingQuantum PhysicsQuantum entanglement01 natural sciencesSymmetry (physics)010305 fluids & plasmasMAJORANACoupling (physics)Quantum mechanicsQubit0103 physical sciencesZener diodeLandau-Zener Dynamics Spin Systems Entanglement Production and Manipulation010306 general physicsSpin-½description
We analyse a system of two interacting spin-qubits subjected to a Landau-Majorana-Stuckelberg-Zener (LMSZ) ramp. We prove that LMSZ transitions of the two spin-qubits are possible without an external transverse static field since its role is played by the coupling between the spin-qubits. We show how such a physical effect could be exploited to estimate the strength of the interaction between the two spin-qubits and to generate entangled states of the system by appropriately setting the slope of the ramp. Moreover, the study of effects of the coupling parameters on the time-behaviour of the entanglement is reported. Finally, our symmetry-based approach allows us to discuss also effects stemming from the presence of a classical noise or non-Hermitian dephasing terms.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-05-17 | Physical Review B |