265 citations · 3k across the 128 of their papers we have counts for
14 papers · 1 filter
How to cross an energy barrier at zero Kelvin without tunneling effect
Seiji Miyashita, Bernard Barbara
This paper deals with the broad class of magnetic systems having a single or collective spin with an energy barrier, such as Rare-Earth elements and their compounds, Single Mol…
Strong coupling of a Gd multilevel spin system to an on-chip superconducting resonator
Giovanni Franco-Rivera, Josiah Cochran, Seiji Miyashita +2
We report the realization of a strong coupling between a Gd spin ensemble hosted in a scheelite (CaWO) single crystal and the resonant mode of a coplanar stripline super…
Characterization of localized effective spins in gapped quantum spin chains
Hayate Nakano, Seiji Miyashita
We study properties of localized effective spins induced in gapped quantum spin chains by local inhomogeneities of the lattice. As a prototype, we study effective spins induced in…
Quantum Decoherence and Thermalization at Finite Temperature within the Canonical Thermal State Ensemble
M. A. Novotny, F. Jin, S. Yuan +3
We study measures of decoherence and thermalization of a quantum system in the presence of a quantum environment (bath) . The entirety is prepared in a canonical t…
Quantum Decoherence Scaling with Bath Size: Importance of Dynamics, Connectivity, and Randomness
Fengping Jin, Kristel Michielsen, Mark Novotny +3
The decoherence of a quantum system coupled to a quantum environment is considered. For states chosen uniformly at random from the unit hypersphere in the Hilbert space of…
Approach to equilbrium in nano-scale systems at finite temperatur
Fengping Jin, Hans De Raedt, Shengjun Yuan +3
We study the time evolution of the reduced density matrix of a system of spin-1/2 particles interacting with an environment of spin-1/2 particles. The initial state of the composit…