Nonequilibrium dynamics is a paramount scenario for studying quantum systems. The
emergence of new features with no equilibrium counterpart, such as dynamical quantum …

Solid-state quantum registers are exceptional for storing quantum information at room
temperature with long coherence time. Nevertheless, practical applications toward quantum …

A famous theorem of Hilbert from 1888 states that for given n and d, every positive
semidefinite (psd) real form of degree 2d in n variables is a sum of squares (sos) of real …

We discuss a model of a short Bose–Hubbard dimer involving two anharmonic quantum
oscillators mutually coupled with the use of the linear interaction and additionally driven by a …

We study the decoherence dynamics of a quantum Ising lattice of finite size with a transverse
dissipative interaction, namely, the coupling with the bath is assumed perpendicular to the …

In non-relativistic quantum theories the Lieb-Robinson bound defines an effective light cone
with exponentially small tails outside of it. In this work we use it to derive a bound for the time …

Hexagonal boron nitride hosts one dimensional topologically-protected phonons at certain
grain boundaries. Here we show that it is possible to use these phonons for the transmission …

We propose a dissipative method for the preparation of many-body steady entangled states
in spin and fermionic chains. The scheme is accomplished by means of an engineered set of …

We study the decoherence and the relaxation dynamics of topological states in an extended
class of quantum Ising chains which can present a manyfold ground state subspace. The …

利用纠缠见证的定义和算子半正定的充要条件, 得到C3⊗ Cd 量子系统中厄米算子(W)
是纠缠见证的充要条件. 把C3⊗ Cd 中W 表示为分块矩阵, 利用子块之间的关系 …