Consider the task of verifying that a given quantum device, designed to produce a particular
entangled state, does indeed produce that state. One natural approach would be to …

In this paper, we present schemes on implementing the single-photon-added coherent
source in quantum key distributions. We apply this source in either the standard BB84 …

Uncertainty relations provide fundamental limits on what can be said about the properties of
quantum systems. For a quantum particle, the commutation relation of position and …

Quantum tomography is a widely applicable method for reconstructing unknown quantum
states and processes. However, its applications in quantum technologies usually also …

The engineering of quantum computers requires the reliable characterization of qubits,
quantum operations, and even the entire hardware. Quantum tomography is an …

A quantum state contains the maximal amount of information available for a given quantum
system. In this paper we use weak-value expressions to reconstruct quantum states of …

We study theoretically optical tomograms of the time-evolved states generated by the
evolution of different kinds of initial wave packets in a Kerr medium. An exact analytical …

We obtain new inequalities for tomographic probability distributions and density matrices of
qutrit states by generalization of the qubit-portrait method. We propose an approach based …

The tomographic approach to identify quantum states with fair probability distributions as
alternatives to wave functions or density operators is reviewed. The tomographic-probability …

We theoretically study the optical tomograms of maximally entangled states generated at the
output modes of a beam splitter. We consider even and odd coherent states in one of the …