Atomic capture device, atomic cooling device, spectroscopic device, optical lattice clock, quantum computer, coil, atomic capture method, atomic cooling method, and spectroscopic method

By combining helical coils and conical solenoid coils, a compact quasi-three-dimensional quadrupole magnetic field is generated, solving the problem of leaky magnetic fields and enabling continuous operation of atomic traps and magnetic traps. This technology is suitable for atomic trapping, cooling, and spectroscopic devices.

CN122459976APending Publication Date: 2026-07-24THE INSTITUTE OF PHYSICAL & CHEMICAL RESEARCH
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Patent Information

Application Number
CN202480082909.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-12-28
Filing Date
2024-12-17
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies generate compact quasi-three-dimensional quadrupole magnetic fields, but the leakage magnetic field is large, which affects the spectral dispersion effect and makes it difficult to continuously supply atomic gas at the same location for different operations.

Method used

A combination of helical coils and conical solenoid coils is used to form a magnetic field distribution to generate a compact quasi-three-dimensional quadrupole magnetic field. By varying the winding density of the helical coils and configuring the conical solenoids, the magnetic field gradient is offset, the leakage magnetic field is reduced, and spherical quadrupole magnetic fields and linear quadrupole magnetic fields are formed in different regions.

Benefits of technology

It achieves the generation of a compact quasi-three-dimensional quadrupole magnetic field while reducing leakage magnetic field, supporting continuous operation of atomic trap and magnetic trap, and is suitable for atomic trap, cooling and spectroscopic devices.

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Abstract

An atom trapping device (10) for trapping atoms is provided with an atom trapping unit (16) into which an atomic gas beam is incident. The atom trapping unit (16) is provided with a plurality of optical elements that form a laser beam group (18), and a magnetic field generating unit (22). The magnetic field generation unit (22) is provided with at least two spiral coils, and, as necessary, is provided with a tapered solenoid coil that optimizes the magnetic field in the guide direction. The spiral coil is configured so that the winding density becomes thinner while the tip becomes thinner as the spiral coil advances in the direction in which the atoms are guided. The helical coils are disposed so as to face each other such that the pitch between the helical coils decreases as the helical coils travel in the direction in which the atoms are guided. The tapered solenoid coil generates a magnetic field to optimize guidance of the atoms and laser cooling in guidance by adjusting a component of the direction in which the atoms are guided in the magnetic field generated by the helical coil. The atom trapping unit (16) may be provided with a baseball coil instead of a spiral coil and a tapered solenoid coil.
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