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Quantum interference device, atomic oscillator, electronic device, and moving object

A quantum interference and frame technology, applied in the field of moving objects, can solve problems such as the inability to detect EIT signals with high precision and the decrease in the accuracy of the oscillation frequency of atomic oscillators

Inactive Publication Date: 2015-06-24
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to mutual interference between predetermined circuits, for example, a circuit through which a small current flows and a circuit through which a large current flows, it is impossible to detect a small EIT signal with high precision, and the accuracy of the oscillation frequency of the atomic oscillator decreases.

Method used

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  • Quantum interference device, atomic oscillator, electronic device, and moving object
  • Quantum interference device, atomic oscillator, electronic device, and moving object
  • Quantum interference device, atomic oscillator, electronic device, and moving object

Examples

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no. 1 Embodiment approach ＞

[0048] figure 1 It is a schematic diagram showing the schematic configuration of the atomic oscillator according to the first embodiment of the present invention. also, figure 2 is a diagram illustrating the energy states of alkali metals, image 3 It is a graph showing the relationship between the frequency difference between the two lights emitted from the light emitting part and the intensity of the light detected by the light receiving part and the light receiving circuit.

[0049] figure 1 The illustrated atomic oscillator 1 is an atomic oscillator utilizing the quantum interference effect.

[0050] Such as figure 1 , Figure 4 As shown, this atomic oscillator 1 has a first unit 2 as a unit on the light emitting side, a second unit 3 as a unit on the light detecting side, optical components 41, 42, 43 arranged between the units 2, 3, Peltier element 46, temperature sensor 47, control unit 6 for controlling first unit 2, second unit 3 and Peltier element 46, first s...

no. 2 Embodiment approach ＞

[0216] Next, a second embodiment of the present invention will be described.

[0217] Figure 8 It is a schematic diagram for explaining the second substrate of the atomic oscillator according to the second embodiment of the present invention. In addition, in the following description, regarding the second embodiment, the differences from the first embodiment will be mainly described, and the description of the same matters will be omitted.

[0218] Such as Figure 8 As shown, in the second embodiment, in the second substrate 82, the ground area 821 of the gas chamber temperature control unit 62 and the light emission unit temperature control unit 64 which are analog circuits is separated from the ground area 822 of the digital circuit 66. . In addition, the ground area 821 is arranged on one end side of the second substrate 82, that is, on the Figure 8 On the left side of the figure, the ground area 822 is disposed on the other end side of the second substrate 82, that i...

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Abstract

A quantum interference device includes: a gas cell housing metal atoms; a light emitting unit emitting light to the gas cell; a light receiving unit receiving light penetrating the gas cell; a cell temperature control unit controlling the gas cell temperature; a light emitting unit temperature control unit controlling the light emitting unit temperature; an analog circuit including a light receiving circuit which processes a light receiving signal output from the light receiving unit, and controls an atomic resonance signal; a digital circuit controlling the analog circuit; a first substrate; and a second substrate. The light receiving circuit is provided on the first substrate. At least one of the cell temperature control unit, the light emitting unit temperature control unit, and the digital circuit is provided on the second substrate. The first and second substrates at least partially overlap with each other in a plan view.

Description

technical field [0001] The present invention relates to quantum interference devices, atomic oscillators, electronic equipment, and mobile bodies. Background technique [0002] An atomic oscillator that oscillates based on energy transitions of atoms of alkali metals such as rubidium and cesium is known as an oscillator that has long-term high-precision oscillation characteristics (see, for example, Patent Document 1). [0003] In general, the operating principles of atomic oscillators are broadly classified into those using the dual resonance phenomenon of light and microwaves and those using the quantum interference effect (CPT: Coherent Population Trapping) of two types of light with different wavelengths. , since atomic oscillators using quantum interference effects can be made more compact than atomic oscillators using double resonance phenomena, they are expected to be installed in various devices in recent years. [0004] For example, an atomic oscillator utilizing t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/26
CPCH03L7/26G04F5/14
Inventor 田中孝明
Owner SEIKO EPSON CORP
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