We present a heralded single-photon source with a much lower level of unwanted
background photons in the output channel by using the herald photon to control a shutter in …

Low noise single-photon sources are a critical element for quantum technologies. We
present a heralded single-photon source with an extremely low level of residual background …

Quantum mechanics presents peculiar properties that, on the one hand, have been the
subject of several theoretical and experimental studies about its very foundations and, on …

We present a panoramic view on various attempts to “solve “the problems of quantum
measurement and macro-objectivation, ie, of the transition from a probabilistic quantum …

Measurements are crucial in quantum mechanics, for fundamental research as well as for
applicative fields like quantum metrology, quantum-enhanced measurements and other …

The photon emission into different spatial directions of a quantum dot in a micropillar cavity
is theoretically analyzed. We propose two types of photon emission statistics from a single …

We propose alternative definitions of classical states and quantumness witnesses by
focusing on the algebra of observables of the system. A central role is assumed by the …

Single photon detectors are fundamental tools for quantum metrology, eg to calibrate both
detectors and sources, as for quantum information. One of the most promising detectors able …

We analyze the recently introduced notion of quantumness witnesses and compare it to that
of entanglement witnesses. We show that any entanglement witness is also a quantumness …

Single-photon sources are set to be a fundamental tool for metrological applications as well
as for quantum information related technologies. Because of their upcoming widespread …