Quantum correlations, foundations & formalism is a research area in quantum information theory and quantum foundations that studies nonclassical statistical correlations between quantum systems and the mathematical structures underpinning them. It encompasses entanglement, Bell nonlocality, steering, and contextuality, and analyzes their characterization via correlation sets, operator algebras, tensor product structures, resource theories, and generalized probabilistic frameworks. The field investigates axiomatic reconstructions of quantum theory, relationships between different nonclassical correlations, and constraints imposed by causality, information principles, and symmetry. It also explores operational and device-independent formulations, linking foundational questions to cryptography, communication complexity, and many-body physics.
Quantum batteries, devices that store energy by exploiting quantum mechanical phenomena, could, in principle, be charged faster and more efficiently than classical ones. Despite their potential, connecting these batteries ...
Quantum sensors, devices that collect measurements by exploiting quantum-mechanical phenomena, could potentially detect extremely weak magnetic, gravitational and electromagnetic signals with greater sensitivity than classical ...
Three years after a team of Caltech scientists showed that pairs of entangled photons could double the resolution of a light microscope, the same lab has figured out a way to double down on that improvement. They have now ...
Optics & Photonics
Aug 6, 2026
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114
Today's quantum technologies rely on energy-intensive lasers, raising concerns that scaling them up could further increase energy demands. In new work, researchers have demonstrated that quantum entanglement between photons ...
Optics & Photonics
Aug 6, 2026
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116
In early 2025, special signals wended their way through a fiber-optic highway strung above the streets and sidewalks of the Maryland suburbs. The arrival of those signals at their destination marks a significant step toward ...
Optics & Photonics
Aug 5, 2026
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34
For years, researchers have tried to harness the "twist" of light to transmit data. This property describes how light spirals as it travels forward, and because it can be molded into a virtually infinite number of different ...
Optics & Photonics
Jul 30, 2026
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When astronomers talk about directly imaging an exoplanet orbiting a faraway star, the analogy they most commonly use is trying to spot a firefly next to a massive searchlight. An Earth-like exoplanet is incredibly dim—usually ...
Astrobiology
Jul 30, 2026
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23
The laws of thermodynamics state that heat naturally flows from hotter systems or regions to colder systems or regions until a state of thermal equilibrium is reached. This simple principle underpins the operation of numerous ...
Quantum information is notoriously fragile. Internet traffic is anything but. Yet Northwestern University scientists have demonstrated they can peacefully coexist inside the same fiber-optic cable.
Optics & Photonics
Jul 22, 2026
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567
Researchers at the University of Michigan have created a device that enables them to control the flow of electrons through a semiconductor using only laser light—no electrical power source required. The device was built to ...
Condensed Matter
Jul 21, 2026
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173
