SERVING THE QUANTITATIVE FINANCE COMMUNITY

 
User avatar
ppauper
Posts: 63059
Joined: November 15th, 2001, 1:29 pm

Re: News from Outer Space

May 27th, 2017, 10:01 am

Image

this is the jovian south pole captured by the juno spacecraft
the ovals are cyclones up to 600 miles across
multiple images were combined
 
User avatar
trackstar
Topic Author
Posts: 25517
Joined: August 28th, 2008, 1:53 pm

Re: News from Outer Space

June 19th, 2017, 6:22 pm

Looking for something spooky?

Quantum entanglement at a record distance - Science News June 15

"Quantum entanglement—physics at its strangest—has moved out of this world and into space. In a study that shows China's growing mastery of both the quantum world and space science, a team of physicists reports that it sent eerily intertwined quantum particles from a satellite to ground stations separated by 1200 kilometers, smashing the previous world record. The result is a stepping stone to ultrasecure communication networks and, eventually, a space-based quantum internet."

More from the article:

"In their first experiment, the team sent a laser beam into a light-altering crystal on the satellite. The crystal emitted pairs of photons entangled so that their polarization states would be opposite when one was measured. The pairs were split, with photons sent to separate receiving stations in Delingha and Lijiang, 1200 kilometers apart. Both stations are in the mountains of Tibet, reducing the amount of air the fragile photons had to traverse. This week in Science, the team reports simultaneously measuring more than 1000 photon pairs. They found the photons had opposite polarizations far more often than would be expected by chance, thus confirming spooky action over a record distance (though the 2015 test over a shorter distance was more stringent)."

And here is the original paper in Science:

Satellite-based entanglement distribution over 1200 km - Science June 16 2017
I do not seek; I find.
- Pablo Picasso
ABOUT WILMOTT

PW by JB

Wilmott.com has been "Serving the Quantitative Finance Community" since 2001. Continued...


JOBS BOARD

JOBS BOARD

Looking for a quant job, risk, algo trading,...? Browse jobs here...