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Tag: University of Geneva

Towards a measurement theory in QFT: “Impossible” quantum measurements are possible but not ideal

Nicolas Gisin and Flavio Del SantoGroup of Applied Physics, University of Geneva, 1211 Geneva, SwitzerlandConstructor University, Geneva, SwitzerlandFind this paper interesting or want to...

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An Enormous Gravity ‘Hum’ Moves Through the Universe | Quanta Magazine

IntroductionAstronomers have found an extra-low hum rumbling through the universe. The discovery, announced today, shows that extra-large ripples in space-time are constantly squashing and changing...

New photon detector accelerates quantum key distribution

A single-photon detector that could boost the performance of some quantum key distribution (QKD) cryptography...

Importance sampling for stochastic quantum simulations

Oriel Kiss1,2, Michele Grossi1, and Alessandro Roggero3,41European Organization for Nuclear Research (CERN), Geneva 1211, Switzerland2Department of Nuclear and Particle Physics, University of Geneva, Geneva...

How to Tame the Endless Infinities Hiding in the Heart of Particle Physics

IntroductionThe secret to fixing a fatal flaw at the heart of quantum theory may lie in three obscure textbooks from the 1980s. But physicists...

Quantum News Briefs March 14: High-performance photon detectors to combat spies in the quantum computing age; How “quantum ready” are German companies? Quantum Brilliance...

By Sandra Helsel posted 14 Mar 2023 Quantum News Briefs March 14: High-performance photon detectors to combat spies...

Room-Temperature Superconductor Discovery Meets With Resistance

IntroductionIn a packed talk on Tuesday afternoon at the American Physical Society’s annual March meeting in Las Vegas, Ranga Dias, a physicist at the...

Hugues de Riedmatten Group Leader in Quantum Optics, Institute of Photonic Sciences will present “Topic Keynote: The Prospects for a Quantum Repeater”

Huguesde Riedmatten, Group Leader in Quantum Optics, Institute of Photonic Sciences (ICFO), is the keynote speaker for Topic Keynote: The Prospects...

Astronomers Say They Have Spotted the Universe’s First Stars

IntroductionA group of astronomers poring over data from the James Webb Space Telescope (JWST) has glimpsed light from a rare isotope of helium in...

Laser beam diverts the path of lightning strikes

Firing a laser beam into the sky can divert the path of a lightning strike,...

Improved DIQKD protocols with finite-size analysis

Ernest Y.-Z. Tan1, Pavel Sekatski2,3, Jean-Daniel Bancal4, René Schwonnek5, Renato Renner1, Nicolas Sangouard4, and Charles C.-W. Lim6,71Institute for Theoretical Physics, ETH Zürich, Switzerland2Department...

Epoch or event? Defining the Anthropocene

The Anthropocene is one of those rare scientific terms that has entered the public consciousness, which is ironic, given that geologists...

Benchmarking single-photon sources from an auto-correlation measurement

Pavel Sekatski1, Enky Oudot2, Patrik Caspar1, Rob Thew1, and Nicolas Sangouard31Department of Applied Physics, University of Geneva, Geneva, Switzerland2ICFO - Institut de Ciencies Fotoniques,...

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