Landau-Majorana-Stückelberg-Zener dynamics driven by coupling for two interacting qutrit systems
A time-dependent model of two interacting spin qutrits is analyzed is analyzed and solved.
The two interacting qutrits are subjected to a longitudinal field linearly varying over time as in …
The two interacting qutrits are subjected to a longitudinal field linearly varying over time as in …
Landau–Zener transitions in coupled qubits: effects of coloured noise
IF Nyisomeh, JT Diffo, ME Ateuafack, LC Fai - Physica E: Low-dimensional …, 2020 - Elsevier
The feasibility of stochastic Hamiltonians for interacting qubits to deliver consistent quantum
speedups in quantum adiabatic optimisation remains an open question. This paper studies …
speedups in quantum adiabatic optimisation remains an open question. This paper studies …
Dynamics of a Landau–Zener transitions in a two-level system driven by a dissipative environment
ME Ateuafack, JT Diffo, LC Fai - Physica B: Condensed Matter, 2016 - Elsevier
The paper investigates the effects of a two-level quantum system coupled to transversal and
longitudinal dissipative environment. The time-dependent phase accumulation, LZ transition …
longitudinal dissipative environment. The time-dependent phase accumulation, LZ transition …
Interplay between Landau-Zener transition dynamic and quantum phase transition in dissipative spin chain with Dzyaloshinsky-Moriya interaction
JT Diffo, ME Ateuafack, GC Fouokeng, LC Fai… - Superlattices and …, 2017 - Elsevier
The paper investigates the transition dynamic of a two-level system coupled uniformly to a
general XY dissipative spin-chain environment with the Dzyaloshinsky-Moriya interaction …
general XY dissipative spin-chain environment with the Dzyaloshinsky-Moriya interaction …
Rotation operator approach for the dynamics of non-dissipative multi-state Landau–Zener problems: Exact solutions
ME Ateuafack, JT Diffo, LC Fai, MN Jipdi - Physica E: Low-dimensional …, 2017 - Elsevier
The paper investigates exact time-dependent analytical solutions of the Landau–Zener (LZ)
transitions for spin one-half subjected to classical noise field using rotation operator …
transitions for spin one-half subjected to classical noise field using rotation operator …
Nonadiabatic dynamics of a dissipative spin chain in a transverse magnetic field
JT Diffo, ME Ateuafack, IF Nyisomeh, LC Fai - Physica E: Low-dimensional …, 2020 - Elsevier
We consider a non-Hermitian Hamiltonian in order to effectively describe a dissipative spin
chain in a transverse magnetic field. The model Hamiltonian is technically transformed to …
chain in a transverse magnetic field. The model Hamiltonian is technically transformed to …
[HTML][HTML] Noise-induced multilevel Landau–Zener transitions: Density matrix investigation
IF Nyisomeh, ME Ateuafack, LC Fai - Physics Letters A, 2019 - Elsevier
Abstract The generalised multilevel Landau–Zener problem is solved by applying the
density matrix technique within the framework of nonstationary perturbation theory. The …
density matrix technique within the framework of nonstationary perturbation theory. The …