Electron state separators for atoms, atomic interferometers, atomic transition frequency measuring devices, atomic oscillators, optical lattice clocks, quantum computers, and methods for generating superposition states of atomic electronic states.

By generating a probe laser that is coaxial or opposite to the direction of atomic motion along the atomic movement path and combining it with a magnetic field, a compact atomic transition frequency measurement device has been realized, solving the problems of large-scale devices and deteriorated coherence in existing technologies and improving measurement accuracy.

CN117223178BActive Publication Date: 2026-05-26THE UNIV OF TOKYO

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THE UNIV OF TOKYO
Filing Date
2022-02-16
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing Rattle and Ramsey spectrophotometry methods suffer from problems such as large device size and degraded coherence in high-precision frequency measurements, making it difficult to achieve high-precision continuous frequency measurements in compact devices.

Method used

An electron state separator for atoms is used. A probe laser is generated on the atomic movement path through an atomic supply unit, a probe laser source, and a magnetic field generation unit. The probe laser is coaxial or opposite to the direction of atomic movement. By combining the magnetic field and the probe laser, the electronic states are mixed and separated to form a compact optical lattice for measuring atomic transition frequencies.

Benefits of technology

This invention enables high-precision measurement of atomic transition frequencies in a compact device, reducing dependence on mechanical stability, improving measurement accuracy, and reducing device size.

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Abstract

The atomic electronic state separator (1) of the present invention includes: an atomic supply unit (11), an atomic movement path (12), a probe laser source (13), and a magnetic field generating unit (M). The atomic supply unit (11) supplies atoms that move in the atomic movement path (12) at a certain speed. The probe laser source (13) supplies a probe laser that propagates coaxially with the atomic movement path (12) in a direction opposite to or the same as the direction of atomic movement. The magnetic field generating unit (M) generates a magnetic field orthogonal to the atomic movement path (12) in the atomic movement path (12) and mixes it with the wave function of the electronic state that allows electric dipole transitions, thereby enabling pulse excitation of clock transitions based on the same probe laser in time and space. Alternatively, a magnetic shielding member can pulse excite clock transitions by shielding the magnetic field applied in the atomic movement path (12) and spatially changing the Zeeman frequency shift, thereby enabling pulse excitation of clock transitions by the same probe laser in time and space. As a result, it is possible to continuously perform spectral analysis of atomic transitions and frequency control of the detection laser, thereby improving the stability of the atomic clock.
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