Temperature Effect Measurement Of Wave Plate Based On Weak Value Amplification

The quantum weak measurement technique is to extract a small amount of useful physical information from the quantum system without causing the collapse of the wave function through very weak coupling action.Based on the principle of weak value amplification,the measurement of tiny physical quantities can be realized,this technology has been widely used in the field of optical precision measurement.In this paper,the weak value amplification technique is used to measure the temperature effect of quartz wave plate.Specifically,this scheme is based on the quartz multistage wave plate as the research object,due to the change of temperature,n_o and n_e change,thus introducing a small change of phase difference,which is amplified by the post-selection process,so as to realize precision measurement of temperature.At the same time,the weak measurement technology is compared with the standard measurement technology.The research in this paper provides a more precise non-contact measurement method for the external influence factor of the wave plate---temperature.