Quantcast
ZME Science
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
    Menu
    Natural Sciences
    Health
    History & Humanities
    Space & Astronomy
    Technology
    Culture
    Resources
    Natural Sciences

    Physics

    • Matter and Energy
    • Quantum Mechanics
    • Thermodynamics

    Chemistry

    • Periodic Table
    • Applied Chemistry
    • Materials
    • Physical Chemistry

    Biology

    • Anatomy
    • Biochemistry
    • Ecology
    • Genetics
    • Microbiology
    • Plants and Fungi

    Geology and Paleontology

    • Planet Earth
    • Earth Dynamics
    • Rocks and Minerals
    • Volcanoes
    • Dinosaurs
    • Fossils

    Animals

    • Mammals
    • Birds
    • Fish
    • Reptiles
    • Amphibians
    • Invertebrates
    • Pets
    • Conservation
    • Animals Facts

    Climate and Weather

    • Climate Change
    • Weather and Atmosphere

    Geography

    Mathematics

    Health
    • Drugs
    • Diseases and Conditions
    • Human Body
    • Mind and Brain
    • Food and Nutrition
    • Wellness
    History & Humanities
    • Anthropology
    • Archaeology
    • Economics
    • History
    • People
    • Sociology
    Space & Astronomy
    • The Solar System
    • The Sun
    • The Moon
    • Planets
    • Asteroids, Meteors and Comets
    • Astronomy
    • Astrophysics
    • Cosmology
    • Exoplanets and Alien Life
    • Spaceflight and Exploration
    Technology
    • Computer Science & IT
    • Engineering
    • Inventions
    • Sustainability
    • Renewable Energy
    • Green Living
    Culture
    • Culture and Society
    • Bizarre Stories
    • Lifestyle
    • Art and Music
    • Gaming
    • Books
    • Movies and Shows
    Resources
    • How To
    • Science Careers
    • Metascience
    • Fringe Science
    • Science Experiments
    • School and Study
    • Natural Sciences
    • Health
    • History and Humanities
    • Space & Astronomy
    • Culture
    • Technology
    • Resources
  • Reviews
  • More
    • Agriculture
    • Anthropology
    • Biology
    • Chemistry
    • Electronics
    • Geology
    • History
    • Mathematics
    • Nanotechnology
    • Economics
    • Paleontology
    • Physics
    • Psychology
    • Robotics
  • About Us
    • About
    • The Team
    • Advertise
    • Contribute
    • Privacy Policy
    • Contact
No Result
View All Result
ZME Science

No Result
View All Result
ZME Science

Home → Science → Physics

Physicists create previously thought impossible super photons

Mihai Andrei by Mihai Andrei
November 27, 2010
in Physics

Velocity-distribution data of a gas of rubidium atoms, confirming the discovery of a new phase of matter, the Bose–Einstein condensate. Via Wikipedia

A team of physicists from the University of Bonn developed a totally new type of source of light, the so called Bose-Einstein condensate; the results will be published in the upcoming edition of Nature. They managed to achieve this astonishing feat by greatly cooling Rubidium atoms and stashing them into each other, up until the point they become indistinguishable and behave like a single big particle, which researchers call a Bose-Einstein condensate.

Technically speaking, the Bose-Einstein condensate is a state of matter of a dilute gas, of weakly interacting bosons, cooled to a temperature very close to absolute zero (approximately -273 degrees Celsius). Under such conditions, a large fraction of the bosons occupy the lowest quantum state of the external potential, at which point quantum effects become apparent on a macroscopic scale. [Wikipedia]

The apparently unsolvable problem appears when talking about light; the problem is that when photons are cooled down, they just disappear; however, Bonn physicists Jan Klärs, Julian Schmitt, Dr. Frank Vewinger, and Professor Dr. Martin Weitz succeeded where so many others failed.

For a better understanding of the phenomena, we should ask ourselves how warm light really is; for example, if you warm a tungsten filament (standard light bulb filament), it starts glowing, first red, then moves on to yellow and then, finally, blue(ish). It would seem that for every temperature there is a different colour, but the problem is that different metals glow in different colours, so a common starting unit had to be found. In order to achieve this, physicists created a theoretical model, the so called black body. The black body is an idealized object that absorbs all the electromagnetic radiation directed at it. So if you take this theoretical object and theoretically heat it, it will give a common ground for a corelation between light colour and temperature. But what happens when you cool it ?

The creators of the "super-photon" are Julian Schmitt (left), Jan Klaers, Dr. Frank Vewinger and professor Dr. Martin Weitz (right). (Credit: © Volker Lannert / University of Bonn)

If you would cool it, it will at some point stop radiating in the visible spectrum – it will only give out infrared photons which are invisible for the human eye. Also, as you cool it, the radiation intensity will decrease as the number of photons gets smaller (because photons disappear when cooled). The problem seems impossible – how do you lower the temperature of the photons without “killing” them ?

The Bonn researchers used a really inventive system, basically using two highly reflective mirrors and bouncing a beam back and forth between them. What happens is that when light hits the mirrors, the molecules in the mirror absorb the photons and then spit them back, and a whole number of interesting things happen during those collisions:

“During this process, the photons assumed the temperature of the fluid,” explained Professor Weitz. “They cooled each other off to room temperature this way, and they did it without getting lost in the process.”

This should especially please chip designers, because they use laser light for etching logic circuits into their semiconductor materials; just how small and fine these structures can be is limited by the wavelength of light – the smaller the better. A big wavelength is just like writing on a piece of paper with a big paintbrush. In time, this development will pave the way for more performant microchips, which will ultimately affect us all.

Was this helpful?


Thanks for your feedback!

Related posts:
  1. Physicists create a new form of light by binding photons
  2. Physicists quantum teleport photons over 143 kilometers
  3. Is dark matter made out of dark photons? These physicists think so
  4. Though considered impossible, Harvard physicists have built a time crystal
  5. Presenting the first 2D magnet: it will allow scientists to make previously impossible experiments
Tags: chipphotonPhysicsquantum opticsResearchrubidiumsuper photon

ADVERTISEMENT
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
  • Reviews
  • More
  • About Us

© 2007-2021 ZME Science - Not exactly rocket science. All Rights Reserved.

No Result
View All Result
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
    • Natural Sciences
    • Health
    • History and Humanities
    • Space & Astronomy
    • Culture
    • Technology
    • Resources
  • Reviews
  • More
    • Agriculture
    • Anthropology
    • Biology
    • Chemistry
    • Electronics
    • Geology
    • History
    • Mathematics
    • Nanotechnology
    • Economics
    • Paleontology
    • Physics
    • Psychology
    • Robotics
  • About Us
    • About
    • The Team
    • Advertise
    • Contribute
    • Privacy Policy
    • Contact

© 2007-2021 ZME Science - Not exactly rocket science. All Rights Reserved.

Don’t you want to get smarter every day?

YES, sign me up!

Over 35,000 subscribers can’t be wrong. Don’t worry, we never spam. By signing up you agree to our privacy policy.

✕
ZME Science News

FREE
VIEW