Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
share
Email Facebook Twitter Google+ LinkedIn Comments

Atomic Gas Is a Nearly Perfect Photon Counter

Photonics Spectra
Dec 2002
Although proposed linear quantum computation schemes show promise, they are premised on photon counters with efficiencies greater than 99 percent -- beyond the reach of today's best devices. Ataç Imamoglu of the University of California, Santa Barbara, however, suggests that methods of "storing" light in an ultracold atomic gas may offer a solution.

Reporting in the Oct. 14 issue of Physical Review Letters, Imamoglu theorizes that photon-counting efficiencies better than 99 percent should be attainable by mapping the quantum state of photons from a probe laser onto an optically thick, trapped atomic gas and then measuring the state-selective scattering of photons from another laser tuned to the desired transition. The technique should be compatible with cold or warm atomic gases, but the latter might display high dark counts caused by thermal effects.

Basic ScienceResearch & Technology

Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2018 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, info@photonics.com
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.