Classical correspondence of quantum entanglement in mesoscopic circuit

Fan Hong-Yi; Wu Ze

doi:10.7498/aps.71.20210992

Abstract

Since the birth of quantum mechanics, its classical correspondence (or analogy) has been a hot topic for physicists. In this paper, we first discuss whether there is a classical correspondence of quantum entanglement. We give a positive answer through the following examples: in the framework of quantization of mesoscopic circuits, two mesoscopic capacitance inductance (LC) circuits with mutual inductance are proved to be the source of quantum entanglement by using the integration within an ordered product, and then the formula of their characteristic frequency is obtained, It is found that it is similar to the expression of the small oscillating frequency of a classical system described below. The classical system is shown in Fig. 1. Two walls are connected with the same spring. And between the two springs a sliding trolley can move on a smooth table. The trolley is hung with a simple pendulum, The small oscillating frequency of the system is calculated by analytical mechanics. It is found that the swing of the simple pendulum will cause the trolley to oscillate back and forth. The mutual restraint effect of the pendulum, the trolley and the spring reflects the “entanglement” between them.

Keywords:

Authors and contacts

Fan Hong-Yi¹,
Wu Ze²

1.
Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
2.
Department of Modern Physics, University of Science and Technology of China, Heifei 230026, China

Corresponding author: Fan Hong-Yi, fhym@ustc.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 11775208)

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References

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图 1 带有互感的两个介观电容-电感(LC)回路及经典系统的小振动模型

Figure 1. Two mesoscopic capacitance-inductor (LC) circuits with mutual inductance and Small vibration model of classical system

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[1]	Srivastava Y, Widom A 1987 Phys. Rep. 148 1 Google Scholar
[2]	Buot F A 1993 Phys. Rep. 234 73 Google Scholar
[3]	Louisell W H 1973 Quantum Statistical Properties of Radiation (New York: John Wiley)
[4]	Fan H Y, Liang X T 2000 Chin. Phys. Lett. 17 174 Google Scholar
[5]	Fan H Y, Da C 2019 Optik 179 413 Google Scholar
[6]	Wang J S, Fan H Y, Meng X G 2010 Chin. Phys. B 19 034206 Google Scholar
[7]	Fan H Y, Klauder J R 1994 Phys. Rev. A 49 704 Google Scholar
[8]	Fan H Y, Lu H L, Fan Y 2006 Ann. Phys. 321 480 Google Scholar
[9]	Fan H Y, Xu Z H 1994 Phys. Rev. A 50 2921 Google Scholar
[10]	Meng X G, Wang J S, Zhang X Y, Liang B L 2011 J. Phys. B: At. Mol. Opt. Phys. 44 165506 Google Scholar
[11]	Zhang R, Meng X G, Du C X, Wang J S 2018 J. Phys. Soc. Jpn. 87 024001 Google Scholar
[12]	Loudon R, Knight P L 1987 J. Mod. Opt. 34 709 Google Scholar
[13]	Fan H Y 1992 Eur. Phys. Lett. 19 443 Google Scholar
[14]	Meng X G, Wang Z, Wang J S, Fan H Y 2012 J. Opt. Soc. Am. B 29 1835 Google Scholar
[15]	Zhao M J, Ma T, Ma Y Q 2018 Sci. China-Phys. Mech. Astron. 61 020311 Google Scholar
[16]	Meng X G, Wang Z, Fan H Y, Wang J S, Yang Z S 2012 J. Opt. Soc. Am. B 29 1844 Google Scholar
[17]	Meng X G, Wang J S, Liang B L, Du C X 2018 J. Exp. Theor. Phys. 154 NN8
[18]	Meng X G, Xu Y J 2014 Int. J. Theor. Phys. 53 1239 Google Scholar
[19]	Meng X G, Wang J S, Liang B L 2009 Solid State Commun. 149 2027 Google Scholar
[20]	Wang J S, Meng X G, Fan H Y 2017 J. Mod. Opt. 64 1398 Google Scholar
[21]	Fan H Y, Zhou J 2012 Sci. China-Phys. Mech. Astron. 55 605 Google Scholar
[22]	Fan H Y 2012 Sci. China-Phys. Mech. Astron. 55 762 Google Scholar

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