Phys.org November 4, 2024 Attosecond physics enables the study of ultrafast coherent electron dynamics in matter upon photoexcitation and photoionization where there has been a strong focus on probing the physical manifestations of internal quantum coherence within the individual parent ion and photoelectron systems. An international team of researchers (UK, Germany) designed theoretically and modelled numerically a direct probe of quantum entanglement in attosecond photoionization in the form of a Bell test and paved the way for the direct observation of entanglement in the context of ultrafast photoionization of many-electron systems. According to the researchers their work provides a novel […]
Tag Archives: Quantum correlation
When light and atoms share a common vibe
Phy.org December 18, 2020 An international team of researchers (Switzerland, USA- MIT) entangled the photon and the phonon produced in the fission of an incoming laser photon inside the crystal by designing an experiment in which the photon-phonon pair could be created at two different instants. Classically, it would result in a situation where the pair is created at time t1 with 50% probability, or later t2 with 50% probability. They measured the decay of these hybrid photon-phonon Bell correlations with sub-picosecond time resolution and found that they survive over several hundred oscillations at ambient conditions. Their method offers a […]