Analytical Quantum Complexity RIKEN Hakubi Research Team |RIKEN Center for Quantum Computing
Postdoctoral Researcher (ΰΉΛα΄Λ)ο»βππ
with Dr. Tomotaka Kuwahara
Analytical Quantum Complexity RIKEN Hakubi Research Team, RIKEN Center for Quantum Computing
Junior Research Associate Program with Dr. Tomotaka Kuwahara
Analytical Quantum Complexity RIKEN Hakubi Research Team, RIKEN Center for Quantum Computing
Japanese Government (MEXT) Doctoral Scholarship with Prof. Naomichi Hatano
Preparatory School for Chinese Students to Japan
Chinese National Scholarship for Postgraduates with Prof. XueXi Yi
This paper was recognized as a Web of Science Highly Cited Paper, ranking among the top 1% in Physics in 2025, and was also cited in Nature Reviews Physics 8, 115 (2026). Moreover, 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 May 2026, this study has 109 citations on Google Scholar.
This work was an Independent Research project conducted by only two graduate students. As of May 2026, this study has 25 citations on Google Scholar.
Significant progress has been made in establishing limits on quantum transport in closed systems, but extensions to open many-body systems remain scarce. We develop the general optimal transport theory and find the maximal speed of macroscopic particle transport in dissipative long-range bosonic systems. This work was featured on ClearSkyScience.
This work received the Best Poster Award at the 5th International Symposium on Quantum Physics and Quantum Information Sciences (QPQIS-2023), Beijing, China. This work is currently under review at PRA Letter.
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. This manuscript is currently under review at Physical Review X.
This work study how many-body structure affects charging optimization under a periodic driving protocol, showing that integrability breaking and long-range interactions serve as key points for improving the QBs charging performance. This manuscript is currently under review at Physical Review Letter.
Lieb-Robinson Bound and Its Application: one may include Particle Transport, Information Propagation, Operator Spreading, and Correlation Generation.
Open Quantum Systems: with particular focus on Dissipative and non-Markovian Dynamics in Quantum Optics and Quantum Information.
Quantum Batteries: focuses on improving the performance of Quantum Batteries by addressing theoretical barriers in practical applications, including those in Topological few-body and Many-Body Quantum Systems.
Hybrid Cavity Optomechanics: theoretical exploration of nonlinear radiation-pressure-induced phenomena and their integration with Superconducting Circuit platforms.
Many-body localization and thermalization (from an information-theoretic perspective) | Currently studying
Floquet theory (Periodic driving and Floquet heating) | Currently studying
Mutual information and Conditional mutual information | Currently studying
Hamiltonian complexity and Krylov complexity
Advanced mathematics (e.g., von Neumann algebras and Graph theory)
Cosmology (e.g., Inflation theory and dS/CFT)
Topologically ordered phases (e.g., Fractional quantum Hall states)
Clifford and random circuits
If you are interested in my research, please feel free to email me at cheng.shang@riken.jp.
Academic discussions and potential collaborations are always welcome!