Method and apparatus for manipulating atoms, ions or molecules a

Details Method and apparatus for manipulating atoms, ions or molecules a Method and apparatus for manipulating atoms, ions or molecules a

1992-04-14

1993-12-28

Berman, Jack I.

Radiant energy

Electrically neutral molecular or atomic beam devices and...

2505051, H05H 300

Patent

active

052742318

ABSTRACT:
Quantum objects, such as atoms, ions, and molecules, are controllably moved by stimulating selected non-radiative energy levels within a quantum structure in accordance with the principles of stimulated Raman transitions. The movement is effected by timed excitation of individual quantum objects with preselected quantities ("pulses") of electromagnetic energy of at least two different frequencies which together are in resonance with a natural resonance (i.e., a stimulated Raman transition) of preferably metastable energy levels within the quantum object to cause a controlled change in momentum of the quantum object. Specific embodiments employ amplitude modulated collinear beams or multiple beams along different beam paths or collinear beams which are phase coherent but from independent laser sources. In alternative embodiments, single-pulse excitation or multiple-pulse sequence excitation with stimulated Raman transitions produce a controlled change in momentum of individual quantum objects according to the invention. A controlled distribution of velocities of an ensemble of quantum objects may be effected in accordance with the invention. The velocities of the quantum objects are changed and selected using the Doppler effect in both excitation and meas

REFERENCES:
patent: 3761721 (1973-09-01), Altshuler et al.
patent: 3778612 (1973-12-01), Ashkin
patent: 4047026 (1977-09-01), Bjorkholm et al.
patent: 4327288 (1982-04-01), Ashkin
patent: 4874942 (1989-10-01), Clauser
patent: 4992656 (1991-02-01), Clauser
patent: 5051580 (1991-09-01), Schneider et al.
C. J. Borde, "Atomic Interferometry with Internal State Labelling," Physics Letter A, vol. 140, No. 1.2, pp. 10-12 (Sep. 4, 1989).
D. W. Keith et al., "An Interferometer for Atoms," Phys. Rev. Lett., vol. 66, No. 21, pp. 2693-2696 (May 27, 1991).
V. P. Chebotayev et al., "Interference of Atoms in Separated Optical Fields," J. Opt. Sci. Am B, vol. 2, No. 11, pp. 1791-1798 (Nov. 1985).
D. W. Weiss et al, "The Production and Uses of Slow Atomic Beams," published by ETS Editrice Pisa, Italy (approx. Jun. 1, 1991), including at p. 35 of the Monograph, Light Induced Kinetic Effects on Atoms, Ions and Molecules, Proceedings of the Workshop, held in Marciana Marina, Elba Island, Italy, May 2-5, 1990, ETS Editrice Pisa, Italy.
M. Kasevich et al., "Atomic Interferometry Using Stimulated Raman Transitions," Phys. Rev. Lett., vol. 67, No. 2 (Jul. 8, 1991).
M. Kasevich et al, "Atomic Velocity Selection Using Stimulated Raman Transitions," Phys. Rev. Lett., vol. 66, No. 18, p. 2297 (May 6, 1991).
"Applications of Laser Cooling and Trapping," AIP Conference Proceedings 233, Zorn and Lewis, Editors, Atomic Physics 12 (Twelfth International Conference on Atomic Physics, Ann Arbor, Michigan 1990 (Copyright 1991 by the American Institute of Physics)).
M. Kasevich et al., paper entitled "Measurement of the Acceleration Due to Gravity with an Atomic Interferometer" orally presented at Santa Fe, New Mexico, May 28, 1991, at the Foundations of Quantum Mechanics Conference, to be published by World Scientific, Jun. 1992, Truman Black, Ed.
S. Chu, "Laser Trapping of Neutral Particles," Scientific American, pp. 71-77 (Feb. 1992).
S. Chu et al., "An Atomic Fountain Atom Interferometer" orally presented at Font Romeau, France, Jun. 17, 1991, to be published by World Scientific in Laser Spectroscopy X, eds. M. Ducloy and E. Giacobino.

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