Physicists Create New Source of Light: Bose-Einstein Condensate 'Super-Photons'

Prasanta Kumar Panigrahi, Anirban Dey, V. S. Ashoka

Physicists in Germany have created a Bose–Einstein condensate (BEC) from photons – a feat that many physicists believed could not be achieved.

D. N. Sob’yanin

A theory of Bose-Einstein condensation (BEC) of light in a dye microcavity is developed. The photon polarization degeneracy and the interaction between dye molecules and photons in all of the cavity modes are taken into account. The theory goes beyond the grand canonical approximation and allows one to determine the statistical properties of the photon gas for all numbers of dye molecules and photons at all temperatures, thus describing the microscopic, mesoscopic, and macroscopic light BEC from a general perspective. A universal relation between the degrees of second-order coherence for the photon condensate and the polarized photon condensate is obtained. The photon Bose-Einstein condensate can be used as a new source of nonclassical light.

Allard P. Mosk

Aranya B. Bhattacherjee, Tarun Kumar

The Bose Statistics were first predicted by the Indian Physicist Satyendra Nath Bose in 1924. Later in 1925, Einstein extended the work of Bose to non-interacting particles.The resulting statistics that came out of the work of Bose and Einstein is known as Bose-Einstein Statistics. It took researchers and scientists nearly 70 years to create the first Bose-Einstein Condensate in the laboratory in 1995. Ever since the discovery of BEC, research in this field has flourished very rapidly both theoretically and experimentally. Discovery of BEC has initiated some new topics such as atom optics, atom interferometry, quantum computation, Cavity Quantum Electrodynamics of BEC, precision measurement, low dimensional physics etc.This book explores some of the exciting new developments in a field, which combines Bose-Einstein Condensates and Optical cavities.Particularly, we show how the transmission spectroscopy can be utilized to measure the properties of the BEC in the optical cavity.

张建军, 袁建辉, 张俊佩 +1 more