Small quantum interferometer for simulating gravitational waves by using piezoelectric ceramic

A technology of piezoelectric ceramics and quantum interference, applied in the field of quantum measurement, achieves the effect of low cost, small size, and deepened understanding

Inactive Publication Date: 2019-10-15
EAST CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, very few researchers have simulated the measurement of gravitational waves in a fundamental physics laboratory setting

Method used

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  • Small quantum interferometer for simulating gravitational waves by using piezoelectric ceramic
  • Small quantum interferometer for simulating gravitational waves by using piezoelectric ceramic
  • Small quantum interferometer for simulating gravitational waves by using piezoelectric ceramic

Examples

Experimental program
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Effect test

Embodiment

[0038] like figure 2 As shown, the laser light source used in this embodiment is a continuous 632.8 nm laser.

[0039] like figure 2 As shown, after the laser light source 21 is collimated, it is divided into two paths by a 50:50 beam splitter 24, one path passes through a set of mirrors 251, 261, 271, and enters another 50:50 beam splitter 28 for transmission; Piezoceramics 262 with mirrors reflect and are reflected again in beam splitter 28 . The optical paths of the two beams are the same, and they are combined on the exit beam splitter 28; they are then focused on the detection surface of the photodetector 210, and the focal length of the focusing lens 29 is 100 mm. One set of reflecting mirrors includes three reflecting mirrors 251, 261 and 271 placed at an angle of 45° to the optical path. Using the three reflecting mirrors, it is easy to adjust and combine the two beams perfectly.

[0040] like figure 2 As shown, a polarization beam splitter 22 and a polarizer 23...

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Abstract

The invention discloses a small quantum interferometer for simulating gravitational waves by using a piezoelectric ceramic. A helium-neon laser is used as a laser light source, an interferometer system comprises a 50:50 beam splitter, a mirror, a continuously adjustable attenuator; a gravitational wave simulation system comprises the piezoelectric ceramic with the mirror, a piezoelectric ceramic driving power supply, a signal generator and a high voltage amplifier; a detection system comprises a focusing lens, a silicon-based photodetector, an oscilloscope and a spectrum analyzer. An electricsignal generated by the signal generator is amplified by the high voltage amplifier and input into the piezoelectric ceramic. The piezoelectric ceramic produces corresponding periodic expansion and contraction change, and the influence of the external small change such as the gravitational waves on optical path difference between two light-beams of the M-Z interferometer is simulated. The elementsof the small quantum interferometer are relatively simple and commonly used, and the structure and the optical path design are compact and flexible, adjustment can be carried out as needed, the smallquantum interferometer has the characteristics of small volume, low cost and simple and easy operation, and the small quantum interferometer is a small quantum interferometer system which can be usedfor quantum precision measurement. High research value and application prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of quantum measurement, relates to the exploration and verification of the measurement principle of gravitational waves, and in particular relates to a small quantum interferometer that uses piezoelectric ceramics to simulate gravitational waves. Background technique [0002] 1. Gravitational waves and the Laser Interferometer Gravitational-Wave Observatory (LIGO) [0003] Gravitational waves are ripples in the curvature of spacetime, propagating away from a source of radiation in the form of waves that transmit energy in the form of gravitational radiation. In 1916, Einstein predicted the existence of gravitational waves based on general relativity. When a gravitational wave passes through an observer, the observer finds that spacetime is distorted because of the strain effect. The distance between objects increases and decreases rhythmically, at a frequency that corresponds to the frequency of gravitatio...

Claims

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Application Information

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IPC IPC(8): G09B23/06
CPCG09B23/06
Inventor 陈廷芳陈丽清蔡羽洁尹亚玲
Owner EAST CHINA NORMAL UNIVERSITY
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