Phase precision of Mach-Zehnder interferometer in PM2.5 air pollution

doi:10.1088/1674-1056/27/7/070304

中国物理B ›› 2018, Vol. 27 ›› Issue (7): 70304-070304.doi: 10.1088/1674-1056/27/7/070304

Phase precision of Mach-Zehnder interferometer in PM2.5 air pollution

Duan Xie(谢端), Haifeng Chen(陈海峰)

School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China

收稿日期:2017-12-06 修回日期:2018-04-10 出版日期:2018-07-05 发布日期:2018-07-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61306131) and the Science Foundation of Shaanxi Provincial Department of Education, China (Grant No. 14JK1682).

Phase precision of Mach-Zehnder interferometer in PM2.5 air pollution

Duan Xie(谢端), Haifeng Chen(陈海峰)

School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China

Received:2017-12-06 Revised:2018-04-10 Online:2018-07-05 Published:2018-07-05
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61306131) and the Science Foundation of Shaanxi Provincial Department of Education, China (Grant No. 14JK1682).

摘要/Abstract

摘要： This paper theoretically explores the effect of PM2.5 air pollution on the phase precision of a Mach-Zehnder interferometer. With the increasing of PM2.5 concentration, phase precision for inputs of coherent state & vacuum state and inputs of coherent state & squeezed vacuum state will gradually decrease and be lower than the standard quantum limit. When the value of relative humidity is increasing, the precision of two input cases is decreasing much faster. We also find that the precision for inputs of coherent state & squeezed state is better than that of coherent state & vacuum state when PM2.5 concentration is lower. As PM2.5 concentration increases, the precision for inputs of coherent state & squeezed state decreases faster, and then the two precisions tend to be the same while the concentration is higher.

关键词: Mach-Zehnder interferometer, PM2.5, phase precision

Abstract: This paper theoretically explores the effect of PM2.5 air pollution on the phase precision of a Mach-Zehnder interferometer. With the increasing of PM2.5 concentration, phase precision for inputs of coherent state & vacuum state and inputs of coherent state & squeezed vacuum state will gradually decrease and be lower than the standard quantum limit. When the value of relative humidity is increasing, the precision of two input cases is decreasing much faster. We also find that the precision for inputs of coherent state & squeezed state is better than that of coherent state & vacuum state when PM2.5 concentration is lower. As PM2.5 concentration increases, the precision for inputs of coherent state & squeezed state decreases faster, and then the two precisions tend to be the same while the concentration is higher.

Key words: Mach-Zehnder interferometer, PM2.5, phase precision

中图分类号: (Quantum information)

03.67.-a

03.65.Ta (Foundations of quantum mechanics; measurement theory)

谢端, 陈海峰. Phase precision of Mach-Zehnder interferometer in PM2.5 air pollution[J]. 中国物理B, 2018, 27(7): 70304-070304.

Duan Xie(谢端), Haifeng Chen(陈海峰). Phase precision of Mach-Zehnder interferometer in PM2.5 air pollution[J]. Chin. Phys. B, 2018, 27(7): 70304-070304.

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Phase precision of Mach-Zehnder interferometer in PM2.5 air pollution

Phase precision of Mach-Zehnder interferometer in PM2.5 air pollution

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