فيزيائيون يبتكرون نموذجاً موحداً لنبضات الليزر التنفسية

21 مايو، 2026

من إعداد الذكاء الاصطناعي

طور فريق بحثي دولي إطاراً رياضياً واحداً يفسر السلوك الإيقاعي غير المعتاد لنبضات الليزر التنفسية. ويوحد هذا الإنجاز، لأول مرة، نظامين منفصلين سابقاً لديناميكيات الليزر.

نشر باحثون، من بينهم الدكتورة سونيا بوسكولو من جامعة أستون، نتائج دراستهم في دورية "فيزيكال ريفيو ليترز". وتُظهر الدراسة أن دورات التنفس السريعة والبطيئة في الليزر فائق السرعة تنشأ من عمليات فيزيائية مترابطة بدلاً من آليات متميزة. فبينما تتذبذب النبضات التنفسية التي تفوق حد العتبة بسرعة وتترابط مع التجويف، تتطور النبضات التنفسية التي تقل عن حد العتبة ببطء من خلال التبديل بجودة عالية (Q-switching) مقترناً بتشكيل السوليتون.

MIT builds terahertz microscope to observe quantum motions in superconductors

18 مارس، 2026 من إعداد الذكاء الاصطناعي صورة مولدة بواسطة الذكاء الاصطناعي

Physicists at MIT have developed a new microscope using terahertz light to directly observe hidden quantum vibrations inside a superconducting material for the first time. The device compresses terahertz light to overcome its wavelength limitations, revealing frictionless electron flows in BSCCO. This breakthrough could advance understanding of superconductivity and terahertz-based communications.

MIT scientists harness chaotic laser for faster brain imaging

Researchers at MIT have discovered that chaotic laser light can self-organize into a highly focused pencil beam, enabling 3D imaging of the blood-brain barrier 25 times faster than current methods. The technique allows real-time observation of drugs entering brain cells without fluorescent tags. This breakthrough could speed up development of treatments for neurological diseases like Alzheimer's and ALS.

Scientists unveil camera capturing trillionth-of-a-second events

21 أبريل، 2026 من إعداد الذكاء الاصطناعي

Researchers at East China Normal University have developed a new imaging technique that captures ultrafast events in trillionths of a second, revealing both brightness and structural changes in a single shot. The method, called compressed spectral-temporal coherent modulation femtosecond imaging (CST-CMFI), tracks phenomena like plasma formation and electron movement. Yunhua Yao, the team leader, described it as a major advance for physics, chemistry, and materials science.

علم

Study explores quantum clocks ticking at multiple speeds

علم

Device measures pressure from single particles for first time

تكنولوجيا

Scientists make light mimic quantum hall effect

Physicists uncover tiny flaw in time from quantum collapse models

An international team of physicists has found that quantum collapse models, potentially linked to gravity, introduce a minuscule uncertainty in time itself. This sets a fundamental limit on clock precision, though far below current detection levels. The research, published in Physical Review Research, explores ties between quantum mechanics and gravity.

Researchers propose new way to detect gravitational waves in atomic light

10 أبريل، 2026 من إعداد الذكاء الاصطناعي

Scientists from Stockholm University, Nordita, and the University of Tübingen have suggested detecting gravitational waves by observing changes in the light emitted by atoms. The waves would subtly shift photon frequencies in different directions without altering emission rates. This approach could enable compact detectors using cold-atom systems.

Oxford physicists demonstrate first quadsqueezing in quantum experiment

Researchers at the University of Oxford have achieved the first-ever demonstration of quadsqueezing, a fourth-order quantum effect, using a single trapped ion. The breakthrough, published on May 1 in Nature Physics, introduces a novel method to engineer complex quantum interactions. This advance could enhance quantum simulation, sensing, and computing.

Researchers uncover new oscillation states in tiny magnetic vortices

27 مارس، 2026 من إعداد الذكاء الاصطناعي

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf have discovered previously unseen Floquet states inside extremely small magnetic vortices using minimal energy from magnetic waves. This finding, which challenges prior assumptions, could link electronics, spintronics, and quantum technologies. The results appear in Science.

21 مايو 2026 07:26

فيزيائيون يبتكرون نموذجاً موحداً لنبضات الليزر التنفسية

مقالات ذات صلة

MIT builds terahertz microscope to observe quantum motions in superconductors

MIT scientists harness chaotic laser for faster brain imaging

Scientists unveil camera capturing trillionth-of-a-second events

Study explores quantum clocks ticking at multiple speeds

Device measures pressure from single particles for first time

Scientists make light mimic quantum hall effect

Physicists uncover tiny flaw in time from quantum collapse models

Researchers propose new way to detect gravitational waves in atomic light

Oxford physicists demonstrate first quadsqueezing in quantum experiment

Researchers uncover new oscillation states in tiny magnetic vortices

Peking university physicists unveil narwhal waves for light confinement

Physicists create first butterfly-shaped ultracold molecule

Pulse Biosciences presents ablation technology at healthcare conference

Slow breathing calms anxiety without mindfulness in mice study

Scientists capture metal turning into star-like plasma in trillionths of a second

Scientists observe wave-like behavior in positronium for first time

Physicists solve plasma asymmetry mystery in tokamaks

NYU physicists create sound-levitated time crystal breaking Newton's third law

Electrons move across solar materials in 18 femtoseconds

Researchers flip ferromagnet polarity using laser beam

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