212 citations · 1.4k across the 30 of their papers we have counts for
5 papers · 1 filter
Quantum annealing through a first-order phase transition: field theory approach
Diego Andrés Rivera Orona, Predrag Punoševac, Nikolai A. Sinitsyn
Unlike second-order phase transitions, a first-order transition has a stage, in which a system is trapped in a metastable state. The decay of this state leads to abundant excitatio…
Computing with a single qubit faster than the computation quantum speed limit
N. A. Sinitsyn
The possibility to save and process information in fundamentally indistinguishable states is the quantum mechanical resource that is not encountered in classical computing. I demon…
Constraints on scattering amplitudes in multistate Landau-Zener theory
N. A. Sinitsyn, J. Lin, V. Y. Chernyak
We derive a set of constraints, which we will call hierarchy constraints (HCs), on scattering amplitudes of an arbitrary multistate Landau-Zener model (MLZM). The presence of addit…
The model of a level crossing with a Coulomb band: exact probabilities of nonadiabatic transitions
J Lin, N A Sinitsyn
We derive an exact solution of an explicitly time-dependent multichannel model of quantum mechanical nonadiabatic transitions. Our model corresponds to the case of a single linear…
Counterintuitive transitions in the multistate Landau-Zener problem with linear level crossings
N. A. Sinitsyn
We generalize the Brundobler-Elser hypothesis in the multistate Landau-Zener problem to the case when instead of a state with the highest slope of the diabatic energy level there i…