Classical measurement is based on classical physical and chemical principles, and the accurate measurement of industrial products, instruments and daily necessities is realized by using conventional analytical measurement methods, and its measurement object is an object. Based on the theory of quantum mechanics, quantum measurement realizes high-precision measurement of angular velocity, gravity field and frequency by using coherent superposition, quantum entanglement and other technical means, and its measurement object is microscopic particles. There are three main ways of quantum measurement: measurement based on microscopic particle energy levels, measurement based on quantum coherence, and measurement based on quantum entanglement.
Recently, technical experts from the Institute of Mechanical Metrology of Zhejiang Institute of Metrology went to a company in Shaoxing to carry out the field test of absolute gravity acceleration based on quantum mechanics, and obtained the local microgravity-level gravity acceleration data, which greatly improved the accuracy level of the force standard machine produced by the company.
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