Single-fiber magneto-optical trap system without confined singular points

The invention relates to the technical field of quantum optics, in particular to a single-fiber magneto-optical trap system without imprisoned singular points, which comprises an input fiber, a collimating lens barrel, a reflex and reflection unit, a vacuum cavity, a hollow pyramid reflector, an anti-Helmholtz coil and a coated wave plate reflector group. The input optical fiber is connected with the collimating lens barrel; and the collimating lens is fixed at the lower end of the reflex and reflection unit. And the lower end of the reflex and reflection unit is fixedly connected with the upper end of the vacuum cavity. The hollow pyramid reflector is arranged in the vacuum cavity, and a magneto-optical trap area is formed in the center of the hollow pyramid reflector. The vacuum cavity is of a closed structure with a transparent window at the top, and the vacuum cavity contains rubidium steam background gas. The coated wave plate reflector group is fixed at the bottom of the vacuum cavity; and the pair of r