Tag

Decoherence

All articles tagged with #decoherence

technology1 year ago•3 min saved

Gold-Plated Superconductor Paves Way for Scalable Quantum Computing

Researchers at the University of California, Riverside, have developed a new superconductor material by combining trigonal tellurium with a thin film of gold, potentially enhancing quantum computing reliability. This interface superconductor, which becomes superconducting through the proximity effect, shows promise due to its robust quantum qualities and ability to suppress decoherence. The material's unique properties, including enhanced spin energy and resistance to magnetic fields, make it a promising candidate for future quantum computers, although further exploration is needed to determine its practical applications.

via Livescience.com|

#chiral-materials #decoherence #quantum-bits

quantum-computing2 years ago•2 min saved

Advancements in Quantum Error Correction and Time Reversal Photonics

Researchers have achieved a significant milestone in quantum computing by extending the lifetime of quantum information beyond the breakeven point using Quantum Error Correction (QEC). By successfully mitigating the effects of decoherence, scientists have demonstrated that quantum information can be preserved and processed effectively in the presence of real-world noise. This experimental achievement opens up new possibilities for quantum information processing and paves the way for high-fidelity logical operations between error-corrected qubits, addressing the challenges posed by noise in quantum systems. The experiment utilized the grid code within an electromagnetic mode and was conducted at Yale University.

via SciTechDaily|

#decoherence #experimental-achievement #quantum-computing

physics2 years ago•10 min saved

Black Holes Pose Threat to Quantum States, Say Researchers

Researchers at the University of Chicago and Princeton University have found that the presence of a black hole is enough to turn a particle's hazy "superposition" into a well-defined reality, suggesting that black holes are observing the universe. The effect is one of many uncovered in the past decade by physicists studying what happens when quantum theory is combined with gravity at low energies. The authors argue that there is something uniquely "insidious" about this kind of decoherence, which will occur anywhere there is a horizon that only allows information to travel in one direction, creating the potential for causality paradoxes.

via WIRED|

#black-holes #decoherence #gravity

physics2 years ago•4 min saved

Quantum States Drawn into Reality by Extreme Space Horizons

Physicists from the University of Chicago have proposed that the presence of a black hole tugs at the strings of a mass in a blur of quantum states and forces it to pick a single fate. They have now presented their views on different kinds of horizons, including Rindler horizons, which could produce a similar kind of decoherence in quantum states. This could lead to objective theories on how quantum states resolve into absolute measurements, and perhaps where gravity and quantum physics meet in a single overarching theory of physics.

via ScienceAlert|

#black-holes #decoherence #general-relativity