Small quantum interferometer for simulating gravitational waves by using piezoelectric ceramic

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...

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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

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