Entangling Macroscopic Light States by Delocalized Photon Addition
Nicola Biagi, Luca Costanzo, Marco Bellini, Alessandro Zavatta
Abstract
We present a scheme, based on the delocalized heralded addition of a single photon, to entangle two or more distinct field modes, each containing arbitrary light states. A high degree of entanglement can in principle endure light states of macroscopic intensities and is expected to be particularly robust against losses. We experimentally establish and measure significant entanglement between two identical weak laser pulses containing up to 60 photons each.
Topics & Concepts
Delocalized electronQuantum entanglementPhysicsPhotonMeasure (data warehouse)Quantum mechanicsPhoton entanglementLaserQuantumComputer scienceDatabaseQuantum Mechanics and ApplicationsQuantum Information and CryptographyMechanical and Optical Resonators