Quantum entanglement is one of the most prominent features of quantum mechanics and
forms the basis of quantum information technologies. Here we present a novel method for …

We study how useful random states are for quantum metrology, ie, whether they surpass the
classical limits imposed on precision in the canonical phase sensing scenario. First, we …

We present an approach to describe state-of-the-art photonic quantum experiments using
graph theory. There, the quantum states are given by the coherent superpositions of perfect …

Virtual Lab by Quantum Flytrap is a no-code online laboratory of an optical table, presenting
quantum phenomena interactively and intuitively. It supports a real-time simulation of up to …

Progress in the reliable preparation, coherent propagation and efficient detection of many-
body states has recently brought collective quantum phenomena of many identical particles …

Many protocols require precise rotation measurement. Here we present a general class of
states that surpass the shot-noise limit for measuring rotation around arbitrary axes. We then …

We give a necessary condition for photon state transformations in linear optical setups
preserving the total number of photons. From an analysis of the algebra describing the …

Linear optical transformations of multiple single-photon inputs are fundamental for the
development of photonic quantum technologies. Various nonclassical correlations can …

Coherent control of large entangled graph states enables a wide variety of quantum
information processing tasks, including error-corrected quantum computation. The linear …

Polarization of light is harnessed in an abundance of classical and quantum applications.
Characterizing polarization in a classical sense is done resoundingly successfully using the …