Tag

Entanglement

All articles tagged with #entanglement

science22 days ago•23 min saved

Quantum states are real: the 2012 theorem reshaping quantum reality

The article argues that the Pusey-Barrett-Rudolph (PBR) theorem, proven in 2012, shows the quantum state must be ontic (a property of reality) under three basic assumptions, ruling out epistemic hidden-variable interpretations and implying the wavefunction has real physical status. This places quantum foundations on firmer ground, clarifies debates about reality vs. knowledge in quantum mechanics, and underscores the theorem’s impact alongside ongoing quantum technologies that exploit entanglement and nonlocality.

via Big Think|

#entanglement #hidden-variables #pbr-theorem

science2 months ago•29 min saved

Silicon Quantum Computing Achieves Record-Setting 11-Qubit Processor

Researchers have developed an 11-qubit atom processor in silicon, demonstrating high-fidelity single- and two-qubit gates, and the ability to generate entanglement across multiple nuclear spins within and between registers, marking a significant step towards scalable quantum error correction in silicon-based quantum processors.

via Nature|

#atom-processor #entanglement #fidelity

science3 months ago•6 min saved

New Study Clarifies Classical Gravity's Role in Quantum Entanglement

Recent research by Aziz and Howl suggests that matter can become quantum entangled through gravitational fields even if gravity is not quantum, challenging traditional views on quantum gravity and proposing new ways to test its existence in future experiments.

via Space|

#entanglement #feynman-thought-experiment #general-relativity

science3 months ago•6 min saved

Quantum Nonlocality Rooted in Particle Identity

Polish physicists have demonstrated that quantum nonlocality may be an inherent property of identical particles, arising from their fundamental indistinguishability, and can be observed experimentally even without direct interaction, suggesting that nonlocality is woven into the fabric of the universe.

via Phys.org|

#bells-inequalities #entanglement #identical-particles

science3 months ago•13 min saved

Physicists Develop Thermometer to Measure 'Quantumness'

Physicists have developed a new method to detect quantum entanglement by measuring anomalous heat flow, which can serve as a non-destructive thermometer for quantumness, leveraging the unique properties of quantum mechanics to potentially improve quantum computing and explore gravity's quantum nature.

via WIRED|

#entanglement #heat-flow #quantum-measurement

science4 months ago•2 min saved

Scientists Discover a Question Too Complex for Quantum Computers

A recent study reveals that even quantum computers have fundamental limits and cannot solve certain complex problems, such as determining quantum phases of matter, which may point to inherent constraints in physical observation itself.

via Yahoo|

#computationallimits #entanglement #limitations

science4 months ago•3 min saved

Challenges in Using Entanglement to Test Gravity's Quantum Nature

A recent study challenges the idea that entanglement can definitively prove gravity is quantum, showing that classical gravity can also produce entanglement under certain conditions, complicating the interpretation of experiments like Feynman's proposed test for quantum gravity.

via Phys.org|

#classical-gravity #entanglement #feynman-experiment

science4 months ago•2 min saved

Can Classical Gravity Theories Explain Quantum Entanglement?

Physicists are debating whether gravity can produce quantum entanglement, with recent proposals suggesting that gravity might have quantum effects without being a quantum theory itself, challenging traditional views and opening new avenues for understanding the fundamental nature of gravity and quantum mechanics.

via Nature|

#entanglement #general-relativity #gravity

science4 months ago•27 min saved

Exploring the Link Between Gravity and Quantum Entanglement

Classical theories of gravity, when combined with quantum field theory, can generate entanglement through virtual matter propagators, challenging the notion that entanglement necessarily indicates quantum gravity. Experiments inspired by Feynman's thought experiment suggest that observing entanglement alone cannot definitively prove gravity's quantum nature, as classical gravity can also produce entanglement under certain conditions.

via Nature|

#classical-theories #entanglement #feynman-experiment

science5 months ago•6 min saved

Quantum Entanglement and the Speed Limit of Quantum Computers

A recent study reveals that the speed limit of quantum computers is dictated by the complexity of entanglement required to solve problems, linking problem difficulty to physical entanglement structures, and providing a new framework for optimizing quantum algorithms.

via Phys.org|

#complexity #entanglement #quantum-algorithms

science6 months ago•4 min saved

Breakthrough in Quantum Computing: New Codes Enable Core Operations and Error Correction

Scientists at the University of Sydney have demonstrated a quantum logic gate using GKP error-correcting codes on a single atom, significantly reducing the number of physical qubits needed for quantum operations and advancing the development of scalable quantum computers.

via Phys.org|

#entanglement #gkp-codes #quantum-computing

science6 months ago•3 min saved

Scientists Achieve Quantum-Like Results Without Entangled Particles

Scientists have demonstrated quantum correlations similar to entanglement without using entangled particles, by exploiting quantum indistinguishability, challenging traditional views and opening new avenues for quantum research.

via Phys.org|

#bells-inequality #entanglement #nonlocality

science7 months ago•4 min saved

Quantum Clocks and Networks Challenge Foundations of Physics

A new experiment involving entangled atomic clocks could provide crucial insights into how quantum mechanics and general relativity interact, potentially advancing the quest for a unified theory of everything. The proposed experiment uses quantum networks to test the effects of gravity on quantum superpositions, which could reveal how spacetime curvature influences quantum phenomena.

via IFLScience|

#atomic-clocks #entanglement #general-relativity

science7 months ago•4 min saved

75 Unsolved Scientific and Historic Mysteries

The article explores some of the enduring mysteries in science, such as the placebo effect, quantum entanglement, and superposition, highlighting the limitations of scientific understanding and the importance of curiosity and wonder in scientific pursuit.

via Bored Panda|

#entanglement #placebo-effect #quantum-physics

environment7 months ago•2 min saved

Whale Watching Tour Encounters Trash Pile with Trapped Person

During a whale watching tour near Sri Lanka, a sea turtle trapped in a fishing net was rescued by a group of tourists and guides, highlighting the issue of marine debris and the importance of conservation efforts.

via The Dodo - For Animal People|

#entanglement #environment #marine-conservation