Mese: Ottobre 2018

Symmetry Protection of Photonic Entanglement in the Interaction with a Single Nanoaperture just published in Physical Review Letters with an Editors’ suggestion and Focus Story in Physics!

We experimentally show that quantum entanglement can be symmetry protected in the interaction with a single subwavelength plasmonic nanoaperture. In particular, we experimentally demonstrate that two-photon entanglement can be either completely preserved or completely lost after the interaction with the nanoaperture, solely depending on the relative phase between the quantum states. We achieve this effect … Continua a leggere

Experimental Phase Estimation Enhanced by Machine Learning just published in Physical Review Applied with an Editors’ suggestion

Phase estimation has applications from quantum imaging to gravitational-wave detection. In areas such as biological-system sampling or quantum metrology, it is crucial to optimally acquire information from a very limited number of probes. To address this need, the authors describe and experimentally verify a machine-learning method for optimal adaptive single-photon phase estimation based on a … Continua a leggere

Experimental Study of Nonclassical Teleportation Beyond Average Fidelity published in Physical Review Letters

Quantum teleportation establishes a correspondence between an entangled state shared by two separate parties that can communicate classically and the presence of a quantum channel connecting the two parties. The standard benchmark for quantum teleportation, based on the average fidelity between the input and output states, indicates that some entangled states do not lead to … Continua a leggere