On Group Phase Quantization and Its Physical Characteristics

doi:10.1088/0256-307X/28/5/050601

Chin. Phys. Lett.

2011, Vol. 28

Issue (5): 050601 DOI: 10.1088/0256-307X/28/5/050601

GENERAL

On Group Phase Quantization and Its Physical Characteristics

DU Bao-Qiang^1,2, ZHOU Wei¹, YU Jian-Guo¹, DONG Shao-Feng¹

¹Department of Measurement and Instrument, Xidian University, Xi'an 710071
²Department of Information Engineering, Henan Vocational and Technical College, Zhengzhou 450046

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DU Bao-Qiang, ZHOU Wei, YU Jian-Guo et al 2011 Chin. Phys. Lett. 28 050601

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Abstract The physical characteristics of phase quantum are further revealed, based on the proposition of concepts of the greatest common factor frequency, the least common multiple period, quantized phase shift resolution and equivalent phase comparison frequency. Then the problem of phase comparison between different frequency signals is certified in detail. Using the basic principle of phase comparison between different frequencies and the variation law of group phase difference, a point of view on group phase quantization is presented. Group phase quantum is not only an indivisible individual of group phase, but also a basic unit composing group phase difference. It is equal to the equivalent phase comparison period of phase comparison between different frequencies in size. Experimental results show not only a high measurement resolution of 10⁻¹²/s in frequency measurement based on group phase quantum, but also a super-high locked phase precision of 10⁻¹³/s in active H atomic clock.

Keywords: 06.30.Ft 06.20.Dk

Received: 10 September 2010 Published: 26 April 2011

PACS:	06.30.Ft	(Time and frequency)
	06.20.Dk	(Measurement and error theory)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/28/5/050601 OR https://cpl.iphy.ac.cn/Y2011/V28/I5/050601

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	DU Bao-Qiang
	ZHOU Wei
	YU Jian-Guo
	DONG Shao-Feng

[1] Du B Q, Zhou W, Dong S F and Zhou H N 2009 Chin. Phys. Lett. 26 070602
[2] Li Z Q, Zhou W and Chen F X 2010 Chin. Phys. B 19 090601
[3] Du B Q and Zhou W 2010 J. Tianjin University. 3 262 (in Chinese)
[4] Du B Q and Zhou W 2009 Chin. J. Sci. Instrum. 30 967 (in Chinese)
[5] Zhou W, Miao M and Zhou H 2009 IEEE Frequency Control Symp. 492
[6] Zhou W, Xuan Z Q and Yu J G 2004 Chin. Phys. Lett. 21 786
[7] Du B Q and Zhou W 2009 Chin. Phys. Lett. 26 100601
[8] Zhou H and Zhou W 2006 IEEE Frequency Control Symp. 267

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