The fluctuation theorem, where the central quantity is the work distribution, is an important
characterization of nonequilibrium thermodynamics. In this work, based on the dissipaton …

Most classical dynamical systems are chaotic. The trajectories of two identical systems
prepared in infinitesimally different initial conditions diverge exponentially with time …

Exchange coupling is a key ingredient for spin-based quantum technologies since it can be
used to entangle spin qubits and create logical spin qubits. However, the influence of the …

In this paper, we present an extended dissipaton equation of motion for studying the
dynamics of electronic impurity systems. Compared with the original theoretical formalism …

Recent advances in nanotechnology have enabled researchers to manipulate small
collections of quantum-mechanical objects with unprecedented accuracy. In semiconductor …

In this work, we develop the free-energy spectrum theory for thermodynamics of open
quantum impurity systems that can be either fermionic or bosonic or combined. We identify …

We report on electronic transport measurements through a silicon double quantum dot
consisting of a donor and a quantum dot. Transport spectra show resonant tunneling peaks …

Efficient operation sequences to couple and interchange quantum information between
quantum dot spin qubits of different kinds are derived using exchange interactions. In the …

Electron spins in quantum dots can interact with impurity spins located in an adjacent region.
This interaction may be controllable using external electric fields and it can involve an …

We unravel theoretically a key intrinsic relaxation mechanism among the low-lying singlet
and triplet donor-pair states in silicon, an important element in the fast-develo** field of …