Atomic space-adjustable dark magnetic optical trap method and device for preparing ultra cold polar molecules

A technology of polar molecules and magneto-optical traps, applied in radiation/particle processing, application of diffraction/refraction/reflection processing, nuclear engineering, etc., can solve problems such as small atomic overlap rate, difficulty in overlapping atomic groups, time-consuming and cumbersome adjustment process, etc. , to achieve the effect of increasing speed and productivity

Active Publication Date: 2015-12-23
SHANXI UNIV
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Problems solved by technology

Second, the atomic groups in the dark magneto-optic are more difficult to overlap
There are no fixed steps to follow in this method, the op

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  • Atomic space-adjustable dark magnetic optical trap method and device for preparing ultra cold polar molecules
  • Atomic space-adjustable dark magnetic optical trap method and device for preparing ultra cold polar molecules
  • Atomic space-adjustable dark magnetic optical trap method and device for preparing ultra cold polar molecules

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Embodiment Construction

[0022] A method for preparing an atomic space adjustable dark magneto-optical trap for ultracold polar molecules, comprising the following steps: (a), combining a beam of A atom capture light and a beam of B atom capture light into one beam, and then splitting them into two Six laser beams facing each other ( figure 1 The arrows where the six beams intersect), and form a magneto-optical trap with the anti-Helmholtz magnetic field; the six laser beams converge in the atomic gas chamber 19 filled with A and B atomic groups in the space; the convergence center of the six laser beams It coincides with the center of the anti-Helmholtz magnetic field; (b), combine the re-pumping light of A and B atoms into one beam, and form a hollow beam after passing through a dark spot; at the same time, add a beam to the hollow beam and exit along the hollow The anti-pumping light of A and B atoms is combined into one central beam; (c), the mixed beam obtained in the previous step is divided in...

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Abstract

The invention relates to an atomic space-adjustable dark magnetic optical trap method and device for preparing ultra cold polar molecules. With the method and device adopted, the technical problem of little possibility for atomic groups to realize space absolute overlap in a current ultra cold polar molecule preparing process can be solved. According to the method and device of the invention, trapping light of A atoms and B atoms are merged into one beam through corresponding optical components; the beam is divided into six beams; the six beams and an inverse helmholtz magnetic field form a magnetic optical trap, so that the overlap ratio of an A atom group and a B atom group trapped by the magnetic optical trap can be significantly enhanced; in a dark magnetic optical trap which is formed by depumping light through adopting a dark point, the intensity ratio of two beams of mixed light can be adjusted through adjusting several wave plates, particular, a third wave plate, and therefore, the work of the overlap of the two atom groups can be controlled, and an ideal condition can be created for the association of the atom groups; a user can know how to adjust the intensity ratio of beams of mixed light through observing atom group images acquired by a CCD image sensor, so that the overlap of the two atom groups can be realized, and the rate and yield of ultra cold polar molecule preparation can be effectively improved.

Description

technical field [0001] The invention relates to a technology for preparing ultra-cold polar molecules, in particular to a method and device for preparing an atomic space adjustable dark magneto-optical trap for ultra-cold polar molecules. Background technique [0002] Quantum information science is an emerging frontier science developed by combining quantum optics, optical information science and computer science in recent years. Quantum information obeys the laws of quantum mechanics and exhibits peculiar properties completely different from classical information science. The smallest unit in the classical information processing process is a bit, and its value is deterministic, either 0 or 1. The corresponding smallest unit in quantum information is called a qubit, which is used to describe a state in the simplest quantum system, which can be in a superposition state of 0 and 1. A variety of media have been proposed to realize quantum information processing, especially th...

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Application Information

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IPC IPC(8): G21K1/06G21K1/093G21K1/00
Inventor 赵延霆姬中华肖连团贾锁堂
Owner SHANXI UNIV
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