Background
Cheng Shang

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Cheng Shang

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Profile

Affiliation

Analytical Quantum Complexity RIKEN Hakubi Research Team |RIKEN Center for Quantum Computing

Position

Postdoctoral Researcher

Contact

Experience

Oct. 2024 - Present
Wako, Saitama, Japan

Postdoctoral Researcher

with Dr. Tomotaka Kuwahara

Analytical Quantum Complexity RIKEN Hakubi Research Team, RIKEN Center for Quantum Computing

Apr. 2023 - Sep. 2024
Wako, Saitama, Japan

Part-time Positions at RIKEN

Junior Research Associate Program with Dr. Tomotaka Kuwahara

Analytical Quantum Complexity RIKEN Hakubi Research Team, RIKEN Center for Quantum Computing

Oct. 2021 - Sep. 2024
Kashiwa, Chiba, Japan

Ph.D. |The University of Tokyo, Department of Physics

Japanese Government (MEXT) Doctoral Scholarship with Prof. Naomichi Hatano

Oct. 2020 - Aug. 2021
Changchun, Jilin, China

MEXT Doctoral Scholarship Candidate

Preparatory School for Chinese Students to Japan

Sep. 2017 - June 2020
Changchun, Jilin, China

Master of Science |Northeast Normal University, Center for Quantum Sciences

Chinese National Scholarship for Postgraduates with Prof. XueXi Yi

Call for Papers

Selected Publications

  1. Zhi-Guang Lu, Guo-Qing Tian, Xin-You Lü, and Cheng Shang, Topological Quantum Batteries, Phys. Rev. Lett. 134, 180401 (2025).
    This work was featured in     PRL Trending, highlighted in a Press Release by RIKEN, and presented as an Invited Talk at the 21st International Workshop on Pseudo-Hermitian Hamiltonians in Quantum Physics (PHHQP-XXI), Chania, Greece. As of December 2025, this study has 62 citations on Google Scholar.
  2. Cheng Shang and Hong-Chao Li, Resonance-dominant optomechanical entanglement in open quantum systems, Physical Review Applied 21(4), 044048 (2024).
    This work was an Independent Research project conducted by only two graduate students. As of December 2025, this study has 19 citations on Google Scholar.
  3. Cheng Shang, Hong-Zhi Shen, and Xue-Xi Yi, Nonreciprocity in a strongly coupled three-mode optomechanical circulatory system, Optics Express 27(18), 25882–25901 (2019).
    As of Dec. 2025, this work has received 34 citations on Google Scholar.
  4. Hong-Zhi Shen, Cheng Shang, Y. H. Zhou, and Xue-Xi Yi, Unconventional single-photon blockade in non-Markovian systems, Phys. Rev. A 98(2), 023856 (2018).
    As of December 2025, this work has received 89 citations on Google Scholar.
  5. Zhi-Guang Lu, Cheng Shang, Ying Wu, and Xin-You Lü, Analytical approach to higher-order correlation functions in U(1) symmetric systems, Phys. Rev. A 108, 053703 (2023).
    This work developed a user-friendly open-source library in Python known as the     Quantum Correlation Solver.

Selected Preprints

  1. Cheng Shang, Zhi-Guang Lu, Hayato Kinkawa, and Tomotaka Kuwahara, Operator Spreading and Information Propagation: Equivalence and Beyond, arXiv:2505.07955.
    This work received the     Best Poster Award at the 5th International Symposium on Quantum Physics and Quantum Information Sciences (QPQIS-2023), Beijing, China.
  2. Donghoon Kim, Yusuke Kimura, Hugo Mackay, Yosuke Mitsuhashi, Hideaki Nishikawa, Carla Rubiliani, Cheng Shang, Ayumi Ukai, and Tomotaka Kuwahara, Spectral Small-Incremental-Entangling: Breaking Quasi-Polynomial Complexity Barriers in Long-Range Interacting Systems, arXiv:2509.12014.
    This work, an International Collaboration across Asia, Europe, and the U. S., introduces the concept of spectral entangling strength (SIE), which captures the structural entangling power of an operator, and establishes a spectral SIE theorem.
  3. Hongchao Li, Cheng Shang, Tomotaka Kuwahara, and Tan Van Vu, Macroscopic Particle Transport in Dissipative Long-Range Bosonic Systems, arXiv:2503.13731.
    This work is currently under review at Nature Communications.
  4. H. Z. Shen, X. C. Zhang, L. Y. Ning, Zhi-Guang Lu, and Cheng Shang, Higher-order Exceptional Points Induced by Non-Markovian Environments, arXiv:2504.00617.
    This work will be submitted to PRX Quantum soon.
  5. Cheng Shang and H. Z. Shen, Coupling Enhancement and Symmetrization in Dissipative Optomechanical Systems, arXiv:2302.04897.
    This work is an invited contribution to Annalen der Physik and is currently under review.

Research Interests

  • â–¼ Lieb-Robinson Bound and Its Application: one may include Particle Transport, Information Propagation, Operator Spreading, and Correlation Generation.

  • â–£ Open Quantum Systems: with particular focus on Dissipative and non-Markovian Dynamics in Quantum Optics and Quantum Information.

  • â—Ž Quantum Batteries: focuses on improving the performance of Quantum Batteries by addressing theoretical barriers in practical applications, including those in Topological and Many-Body Quantum Systems.

  • |◻︎| Hybrid Cavity Optomechanics: theoretical exploration of nonlinear radiation-pressure-induced phenomena and their integration with Superconducting Circuit platforms.

What I Want to Learn

  • Many-body localization and thermalization (from an information-theoretic perspective)
  • Floquet theory (periodic driving theory and Floquet heating)
  • Quantum Complexity and Krylov complexity
  • Advanced mathematics (von Neumann algebras and graph theory)