Coherent population trapping: its physics and historical roots
نویسندگان
چکیده
منابع مشابه
Coherent population trapping and Fano profiles
This paper presents a new approach to coherent population trapping in a A-type three level atomic configuration. This approach, which is based on scattering theory, applies when one of the two driving laser fields is much weaker than the other one. We show that the scattering amplitude of the weak field is the sum of 2 resonant amplitudes. The positions and the widths of these resonances are id...
متن کاملCoherent population trapping in the stochastic limit
A 2–level atom with degenerate ground state interacting with a quantum field is investigated. We show, that the field drives the state of the atom to a stationary state, which is non–unique, but depends on the initial state of the system through some conserved quantities. This non–uniqueness follows from the degeneracy of the ground state of the atom, and when the ground subspace is two–dimensi...
متن کاملCold-atom double- coherent population trapping clock
F.-X. Esnault,1,2 E. Blanshan,1 E. N. Ivanov,3 R. E. Scholten,4 J. Kitching,1 and E. A. Donley1,* 1National Institute of Standards and Technology, Boulder, Colorado 80305, USA 2Centre National d’Etudes Spatiales, 18 Avenue Edouard Belin, 31400 Toulouse, France 3School of Physics, The University of Western Australia, Crawley, Western Australia 6009, Australia 4School of Physics, The University o...
متن کاملNonperturbative coherent population trapping: an analytic model.
Coherent population trapping is shown to occur in a driven symmetric double-well potential in the strong-field regime. The system parameters have been chosen to reproduce the 0(-) <--> 3(+) transition of the inversion mode of the ammonia molecule. For a molecule initially prepared in its lower doublet we find that, under certain circumstances, the 3(+) level remains unpopulated, and this occurs...
متن کاملHistorical Roots of Its Underdevelopment Emmanuel
Africa poses the development challenge of our time. Once devastated by famine and mired in poverty, India and much of Asia are now growing economically. While Africa’s economies too are now growing, in many African countries, people are just now returning to the levels of per capita income they enjoyed more than a half century ago. 1 Th e current poverty and the widespread economic decline foll...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2016
ISSN: 2100-014X
DOI: 10.1051/epjconf/201713201012