We show that the detection efficiencies required for closing the detection loophole in Bell
tests can be significantly lowered using quantum systems of dimension larger than two. We …

Quantum key distribution is on the verge of real world applications, where perfectly secure
information can be distributed among multiple parties. Several quantum cryptographic …

We present a complete methodology for testing the performances of quantum tomography
protocols. The theory is validated by several numerical examples and by the comparison …

A brief introduction to quantum information theory in the context of quantum optics is
presented. After presenting the fundamental theoretical basis of the subject, experimental …

An experimental demonstration of two-qutrit state tomography via one-qutrit symmetric
informationally complete positive operator-valued measure (SIC-POVM) is presented. A two …

We study, by means of the stabilizer formalism, a quantum error correcting code which is
alternative to the standard block codes since it embeds a qubit into a qudit. The code …

Mixed-state purification is used as a basis to formulate a general statistical method for
reconstructing the density matrix of an arbitrary quantum state. A universal statistical …

We consider a current-biased dc SQUID in the presence of an applied time-dependent bias
current or magnetic flux. The phase dynamics of such a Josephson device is equivalent to …

Optical transmission nonreciprocity as a widely investigated phenomenon is essential to
various applications. Many sophisticated mechanisms have been proposed and tested for …

The constantly growing need for fast and secure optical communication systems resulted in
the rapid development of classical and quantum photonic technologies. Continuous …