In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

The distribution of quantum states over long distances is limited by photon loss.
Straightforward amplification as in classical telecommunications is not an option in quantum …

In quantum-optics experiments with both natural and artificial atoms, the atoms are usually
small enough that they can be approximated as pointlike compared to the wavelength of the …

We study the non-Markovian effect on the dynamics of the quantum discord by exactly
solving a model consisting of two independent qubits subject to two zero-temperature non …

In quantum optics, it is common to assume that atoms can be approximated as point-like
compared to the wavelength of the light they interact with. However, recent advances in …

Quantum fluctuations of the vacuum are both a surprising and fundamental phenomenon of
nature. Understood as virtual photons, they still have a very real impact, for instance, in the …

We study two-level systems (2LS) coupled at different points to a one-dimensional
waveguide in which one end is open and the other is either open (infinite waveguide) or …

We propose a scheme for perfect excitation of a single two-level atom by a single photon in
free space. The photon state has to match the time reversed photon state originating from …

We investigate the entanglement dynamics of continuous-variable quantum channels in
terms of an entangled squeezed state of two cavity fields in a general non-Markovian …

We study the entanglement preservation of two qubits locally interacting with their reservoirs.
We show that the existence of a bound state of the qubit and its reservoir and the non …