General
NAME: Zhang, Haichao
GENDER: Male
BIRTHDAY: June 24, 1963
Email: zhanghc@siom.ac.cn
Telephone: 021-69918172 
Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai, China.
Postcode: 201800

Research Areas

Dr. Hai-Chao Zhang, Professor of Physics in the key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science. He received his Ph.D. in Physics from Zhongshan (Sun Yat-Sen) University in 2002.

     His research interests include coherence of matter-wave,atomic interferometer,  and fifth forces due to scalar field and dark energy. 

     His recent work focuses on detecting a scalar fifth force under laboratory conditions, and obtaining a scalar fifth force via a symmetry-breaking coupling function.  He has been exploring how experiments using cold atoms may detect a scalar fifth force (the paper may be viewed  https://arxiv.org/abs/1702.03050) and how a novel conceptualization of cosmic evolution—relying on a symmetry-breaking coupling function—may prove to be consistent with the most updated Planck 2018 results.  He has proposed an approach—applying the symmetry-breaking coupling function—that  evades the two NO-GO theorems (Chameleon no-go theorem and Weinberg’s no-go theorem).

    He proposes a New Quasicyclic Universe Model and demonstrates the Universe is a closed space based on the observed concave potential feature of the scalar field shown in the Planck 2018 results [Hai-Chao Zhang, Obtaining a scalar fifth force via a symmetry-breaking coupling between the scalar field and matter, PHYSICAL REVIEW D 101, 044020 (2020) DOI: 10.1103/PhysRevD.101.044020]. He proves that the scalar field can entirely account for the observed late-time cosmic acceleration, due to the symmetry-breaking coupling that can localize the value of the self-interaction potential to act as the cosmological constant. He shows that the observed Hubble tension can be explained by the two representative frames  [The observed discordances in cosmology signaling new Physics. https://doi.org/10.21203/rs.3.rs-99476/v2].

   When the cosmic constraints are satisfied, his scheme predicts that the magnitude of the fifth force is considerably larger than gravity, especially for lower density in the local environment. However, the fifth force is suppressed into a very short interaction range. Tests of gravity are then satisfied. A typical interaction range is estimated to be about 5 μm for the current matter density of the Universe.

   The fifth force might be significantly detectable, provided that experiments are designed that allow test particles to pass through the thin-shell region of sources or at least allow test particles to approach the thin shell as closely as possible.

    He supervises the Matter-Wave Guided Cold Atom Interferometery Lab. His work has appeared in Phsical Reviw D,  Applied Physics Letter, Optics Communications, Chinese Physics B, Chinese Optics Letter, Chinese Physics Letters, J. Phys. B, etc.

 

E-mail: zhanghc@siom.ac.cn


Education

Sept. 1997-Jun. 2002: Zhongshan (Sun Yat-sen) University, Guangzhou, Guangdong, China; Major in ultrafast laser spectroscopy and optoelectronics. Awarded Ph. D of Science.
Sept. 1980-Jul. 1984: Lanzhou University, Lanzhou, Gansu, China; Major in theoretical physics. Awarded Bachelor of Science.
Sept. 1978-Jul. 1980: Baishui High School, Baishui, Shaanxi, China; Awarded Diploma.

Experience

   
Work Experience

Jun. 2003 -Present: Associate Professor, Professor in physics. Experimental research on physical properties of both ultracold atoms and Bose-Einstein condensates (BEC), Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai, China.
 
Jul. 2002-May 2003: Visiting Scholar at Zhongshan University, Guangzhou, Guangdong. 

Jan. 1987-Aug. 1997: Assistant Professor in physics and Director of the Laboratory of Physics and Electronic Technologies, Gansu TV University, Lanzhou, Gansu, China. 

Sept. 1985-Jan. 1987: Visiting scholar of theoretical physics at Peking University, Beijing, China. 

Jul. 1984-Aug. 1985: A teacher in physics at Gansu TV University, Lanzhou, Gansu,China.

Publications

   
Selected publications:

  1.    Hai-Chao Zhang,  Obtaining a scalar fifth force via a symmetry-breaking coupling between the scalar field and matter. PHYSICAL REVIEW D 101, 044020 (2020). DOI: 10.1103/PhysRevD.101.044020.

  2.   Cheng J, Zhang J, Xu X, Zhang H#, Wang Y. “ Direct loading of atoms from a macroscopic quadrupole magnetic trap into a microchip trap”. Chinese Physics B Vol. 26, (3), 033701 (2017).

  3.   Cheng Jun, Zhang Jing-Fang, Xu Xin-Ping, Jiang Xiao-Jun, Li Xiao-Lin, Zhang Hai-Chao#, Wang Yu-Zhu. Three wire toroidal magnetic guide based on the vertical leads and ac current modulation. Acta Phys. Sin. Vol. 65 (6) 060302 (2016).

  4.  Xiaojun Jiang, Xiaolin Li, Haichao Zhang#, and Yuzhu Wang. Demonstration of a cold atom beam splitter on atom chip. Chin. Phys. B, 25(8) 080311(2016).

  5.     Xiaojun Jiang, Xiaolin Li, Haichao Zhang# and Yuzhu Wang. Smooth Archimedean-spiral ring waveguide for cold atomic gyroscope. CHINESE OPTICS LETTERS, 14 (7), 070201 (2016).

  6.    Jun Cheng, Xiaolin Li, Jingfang Zhang, Xinping Xu, Xiaojun Jiang, Haichao Zhang# and Yuzhu Wang. Miniature Bose–Einstein condensate system design based on a transparent atom chip. J. Phys. B: At. Mol. Opt. Phys., 49, 165301 (2016).

  7.   JIANG Xiao-Jun,LI Xiao-Lin, XU Xin-Ping, ZHANG Hai-Chao#, WANG Yu-Zhu Archimedean-spiral-based microchip ring waveguide for cold atoms A new type of  magnetic ring microtrap, CHIN. PHYS. LETT. Vol. 32 (2) 020301-1 (2015).

  8.   Dongyuan Chen, Haichao Zhang#, Xinping Xu, Tang Li and Yuzhu WangNonadiabatic Transport of Cold Atoms in a Quadrupole PotentialAppl. Phys. Lett. 96, 134103 (2010).

  9.     Hai-chao Zhang#, Peng-fei Zhang, Xin-ping Xu, Feng Cheng, and Yu-zhu Wang, Optimized temperature measurement with time-of-flight method, Optics Communications Volume 282, Issue 16, 15 Pages 3278-3281 (2009).

  10.   Zhang Hai-Chao#, Lin WZ, Wang YZ., Existence of the transverse relaxation time in optically excited semiconductors, CHINESE PHYSICS, Vol. 15 (4): 735-749 (2006).

  11.    ZHANG Hai-Chao#, ZHANG Peng-Fei, XU Xin-Ping, HAN Jiu-Rong and WANG Yu-Zhu,Trapping of Neutral Atoms with a Radio-frequency Field. Chinese Physics Letters, Vol. 22 (1): 83 (2005).

  12.    Hai-chao Zhang#, Wei-zhu Lin, and Yu-zhu Wang, The origin of the transverse relaxation time in optically excited semiconductor quantum wells. Optics Communications, Vol. 245: 271-280 (2005).

  13.   Jiu-Rong Han, Hai-Chao Zhang, Yu-Zhu Wang, Energy spectrum of ground State and excitation spectrum of quasi-particle for  hard-core boson in optical lattices, Communications in Theoretical Physics, Vol. 44 (5): 863-866  (2005).

  14.    Qian Shou, Haichao ZhangDe Li and Weizhu Lin, Effects of Rayleigh scattering in transient nonlinear optical measurements.  APPLIED PHYSICS LETTERS, Vol. 83 (12), 2306- 2308 (2003).

  15.    Haichao Zhang, Li Deng and Weizhu Lin. Ultrafast dephasing of interband transitions in semiconductors. SCIENCE IN CHINA (Series A)Vol. 44 (10), 1340 (2001).


Research Interests

coherence of matter-wave; dark energy; scalar fifth force; atomic interferometer

Students

已指导学生

陈东元  硕士研究生  080300-光学工程  

陈钰水  硕士研究生  085202-光学工程  

凌云龙  硕士研究生  080300-光学工程