Dzyaloshinskii-Moriya and dipole-dipole interactions affect coupling-based Landau-Majorana-Stückelberg-Zener transitions

@article{Grimaudo2020DzyaloshinskiiMoriyaAD,
  title={Dzyaloshinskii-Moriya and dipole-dipole interactions affect coupling-based Landau-Majorana-St{\"u}ckelberg-Zener transitions},
  author={Roberto Grimaudo and Hiromichi Nakazato and Antonino Messina and Nikolay V. Vitanov},
  journal={arXiv: Quantum Physics},
  year={2020}
}
It has been theoretically demonstrated that two spins (qubits or qutrits), coupled by exchange interaction only, undergo a coupling-based joint Landau-Majorana-Stuckelberg-Zener (LMSZ) transition when a linear ramp acts upon one of the two spins. Such a transition, under appropriate conditions on the parameters, drives the two-spin system toward a maximally entangled state. In this paper, effects on the quantum dynamics of the two qudits, stemming from the Dzyaloshinskii-Moriya (DM) and dipole… 
3 Citations
Spin-chain-star systems: entangling multiple chains of spin qubits
R. Grimaudo,1 A. S. M. de Castro,2 A. Messina,3 and D. Valenti1 1Dipartimento di Fisica e Chimica “Emilio Segrè”, Università degli Studi di Palermo, viale delle Scienze, Ed. 18, I-90128, Palermo,
Symmetry-Induced Emergence of a Pseudo-Qutrit in the Dipolar Coupling of Two Qubits
We investigate a system of two identical and distinguishable spins 1/2, with a direct magnetic dipole–dipole interaction, in an external magnetic field. Constraining the hyperfine tensor to exhibit
Two-Qubit Entanglement Generation through Non-Hermitian Hamiltonians Induced by Repeated Measurements on an Ancilla
TLDR
This paper demonstrates the effectiveness of a proposed protocol for engineering non-Hermitian Hamiltonians as a result of repetitive measurements on an ancillary qubit by applying it to physically relevant multi-spin models, and reports a new recipe to construct a physical scenario where the quantum dynamics of a physical system represented by a given non- herMITian Hamiltonian model may be simulated.

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