Quantum optical fiber interferometer

Abstract

The invention discloses a quantum optical fiber interferometer comprising a quantum compression light source, an electro-optic modulator, a first optical fiber splitter, a first optical fiber phase shifter, a second optical fiber phase shifter, a second optical fiber splitter and a balance detector. The defects that the existing interferometer system is limited by the classic shot noise limit can be overcome, and the system can perform low frequency phase measurement by using a high frequency compression source.

Description

technical field [0001] The invention relates to the technical field of precision measurement, in particular to a quantum optical fiber interferometer. Background technique [0002] In the field of precision measurement, the measurement of many physical quantities is attributed to the measurement of the phase, so the interferometer has become the most common experimental device in precision measurement, in basic scientific research (such as the measurement of basic physical constants) and practical engineering applications (such as navigation positioning, resource exploration) all play a vital role. At present, the long baseline laser interferometer used for gravitational wave detection has a sensitivity of ~10 -23 εHz -1 / 2 , is currently the most sensitive interferometer. However, this kind of free-space interferometer is complex in structure and bulky, and is easily affected by ambient temperature, sound and vibration, making interferometric measurement unstable and diff...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The present invention aims at the problems existing in the prior art, and provides a quantum optical fiber interferometer to overcome the defect of the existing interferometer system limited by the classical shot noise limit. phase measurement

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