Fidelity serves as a benchmark for the reliability in quantum information processes, and has
recently attracted much interest as a measure of the susceptibility of dynamics to …

The exciting new features of entanglement are burgeoning with revolutionary new advances
in the areas of quantum communication, quantum information processing and quantum …

The dynamical properties of quantum entanglement in two effective two-level trapped ions
interacting with a laser field are studied in terms of the negative eigenvalues of the partial …

The statistical properties of interacting strongly chaotic systems are investigated for varying
interaction strength. In order to model tunable entangling interactions between such …

This paper analyzes the decoherence induced on a single qubit by the interaction with a
spin chain with nontrivial internal dynamics (XY-type interactions). The aim of the paper is to …

We study decoherence of two non-interacting qubits. The environment and its interaction
with the qubits are modelled by random matrices. Decoherence, measured in terms of purity …

Random matrix theory is used to represent generic loss of coherence of a fixed central
system coupled to a quantum-chaotic environment, represented by a random matrix …

We address the problem of two interacting atoms of different species inside a cavity and find
the explicit solutions of the corresponding eigenvalues and eigenfunctions using a new …

We describe some new features of quantum entanglement in two three-level trapped ions
confined in a one-dimensional harmonic potential, allowing the instantaneous position of the …

We analyze decoherence of a quantum register in the absence of nonlocal operations, ie, n
noninteracting qubits coupled to an environment. The problem is solved in terms of a sum …