We present a scalable method for the tomography of large multiqubit quantum registers. It
acquires information about the permutationally invariant part of the density operator, which is …

For the certification and benchmarking of medium-size quantum devices, efficient methods
to characterize entanglement are needed. In this context, it has been shown that locally …

Feasible tomography schemes for large particle numbers must possess, besides an
appropriate data acquisition protocol, an efficient way to reconstruct the density operator …

Precise characterization of quantum devices is usually achieved with quantum tomography.
However, most methods which are currently widely used in experiments, such as maximum …

Many future quantum technologies rely on the generation of entangled states. Quantum
devices will require verification of their operation below some error threshold, but the …

Contextuality is a natural generalization of nonlocality which does not need composite
systems or spacelike separation and offers a wider spectrum of interesting phenomena …

Einstein-Podolsky-Rosen steering is known to be a key resource for one-sided device-
independent quantum information protocols. Here we demonstrate steering using hybrid …

One of the main challenges of quantum information is the reliable verification of quantum
entanglement. The conventional detection schemes require repeated measurement on a …

Quantum state tomography is the task of inferring the state of a quantum system from
measurement data. A reliable tomography scheme should not only report an estimate for …

We study the problem of witnessing entanglement among indistinguishable particles. For
this purpose, we derive a set of equations which results in necessary and sufficient …