Search results for spontaneous coherence

Optics & Photonics Feb 2, 2023

Interaction-free, single-pixel quantum imaging with undetected photons

To capture an image of an object, a photographer typically requires a source of light interacting and scattering away from that object of interest, and a method to detect the light being scattered away from that object, as ...

Plants & Animals Nov 17, 2022

Synchrony with chaos: Blinking lights of a firefly swarm embody in nature what mathematics predicted

Imagine an old-growth forest in the fading light of a summer evening. As the last of the sun's rays disappear beneath the horizon, a tiny flash catches your eye.

Optics & Photonics Nov 10, 2022

Creating surface plasmon polariton amplification using free-electron pumping to build a new kind of laser

A team of researchers at the Chinese Academy of Sciences working with a colleague from ShanghaiTech University and another from Zhangjiang Laboratory, has developed a new way to make a laser with light in a wide range of ...

Social Sciences Sep 27, 2022

Children's eyewitness testimony can be as accurate as adults' or more so. If interviewers follow these guidelines

Eyewitness memory has come under a lot of scrutiny in recent years, as organizations such as the Innocence Project suggest it was a key piece of information in as many as 75% of wrongful convictions in the United States. ...

Biochemistry Sep 26, 2022

New theory upends what we know about how charged macromolecules self-assemble

In a discovery with wide-ranging implications, researchers at the University of Massachusetts Amherst recently announced in the Proceedings of the National Academy of Sciences that uniformly charged macromolecules—or molecules, ...

Optics & Photonics Sep 20, 2022

Super-resolved coherent Raman spectroscopy with quantum light

In recent years, entangled photons—a popular quantum light source—have been widely used in quantum imaging, optical interferometry, quantum computing, quantum communication, and other fields. Spontaneous parametric down-conversion ...

General Physics Sep 7, 2022

Evidence of excitonic insulators in moiré superlattices

Excitons are quasiparticles that are formed in insulators or semiconductors when an electron is promoted to a higher energy band, leaving a positively charged hole behind.

Optics & Photonics Sep 2, 2022

High brightness attosecond X-ray free electron lasers based on wavefront control

Ultrafast science has made great advances in recent years. Attosecond pulses with photon energies lying in the soft X-ray range corresponding to the fundamental absorption edges of matter permit the study of electron dynamics ...

Analytical Chemistry Aug 9, 2022

In control of chaos to engineer high-entropy ceramics

Nature strives for chaos. That's a nice, comforting phrase when yet another coffee cup has toppled over the computer keyboard and you imagine you could wish the sugary, milky brew back into the coffee cup—where it had been ...

Optics & Photonics May 18, 2022

Physicists shine new light on an old quantum optics problem about collective behavior

When atoms interact with each other, they behave as a whole rather than individual entities. That can give rise to synchronized responses to inputs, a phenomenon that, if properly understood and controlled, may prove useful ...

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