We discuss the emergence of spontaneous synchronization for an open spin-pair system
interacting only via a common environment. Under suitable conditions, and even in the …

The reduced dynamics of two interacting qubits coupled to two independent bosonic baths is
investigated. The one-excitation dynamics is derived and compared with that based on the …

The controlled generation of entangled states of two quantum bits is a fundamental step
toward the implementation of a quantum information processor. In nano-devices this …

Recent experiments by [Hayashi, Phys. Rev. Lett. 91, 226804 (2003)] demonstrate coherent
oscillations of a charge quantum bit in laterally defined quantum dots. We study the intrinsic …

The quantum dynamics of a spin chain interacting with multiple bosonic baths is described
in a mixed Wigner-Heisenberg representation. The formalism is illustrated by simulating the …

We use numerically exact iterative path integral methods to investigate the decoherence and
entanglement dynamics of a tunneling pair of two coupled qubits (spins) system interacting …

The dissipative dynamics of two interacting qubits coupled to independent reservoirs at
nonzero temperatures is investigated, paying special attention to the entanglement …

The class of two-interacting-qubit spin–boson models with vanishing transverse fields on the
spin-pair is studied. The model can be mapped exactly into two independent standard single …

We investigate optimal control of a single qubit coupled to an ohmic heat bath. For the weak
bath coupling regime, we derive a Bloch-Redfield master equation describing the evolution …

Minimizing the effect of decoherence on a quantum register must be a central part of any
strategy to realize scalable quantum-information processing. Apart from the strength of the …