Quantum Light-Matter
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We are a theoretical research group focusing on quantum aspect of light-matter interactions and their applications in various fields. As physical systems, we investigate semiconductor microcavities, quantum dots, and other light-matter systems.
Research Interests
Research Interests
Semiconductor microcavity enhanced light-matter interactions, exciton polariton Bose-Einstein condensate and lasing, and nonequilibrium dynamics
Ultrafast dynamics in low dimensional semiconductors, exciton polariton lattices, nonlinear optical properties, and polaritonic devices
Quantum computing, quantum neural networks, and single photon emission
More on research can be found here.
We have openings!
We always have several postdoctoral openings. We regularly look for excellent Ph.D. candidates to join our group. Please email me if you are interested (sanjibghosh@cuhk.edu.cn).
Research highlights
Research highlights
Selected publications
Selected publications
See the full list on google scholar
Selected review articles:
S. Ghosh, R. Su*, J. Zhao, A. Fieramosca, J. Wu, T. Li, Q. Zhang, F. Li, Z. Chen, T. Liew, D. Sanvitto, Q. Xiong*, Microcavity exciton polaritons at room temperature, Photonics Insights, 1, R04 (2022).
S. Ghosh, K. Nakajima, T. Krisnanda, K. Fujii, and T. Liew*, Quantum Neuromorphic Computing with Reservoir Computing Networks, Adv. Quantum Technol. 2100053 (2021).
Selected research articles
X. Xu, L. Tian, Z. An, Q. Xiong*, and S. Ghosh*, Exciton polariton critical non-Hermitian skin effect with spin-momentum-locked gains, Phys. Rev. B 111, L121301 (2025)
J. Song#, S. Ghosh#, X. Deng, C. Li, Q. Shang, X. Liu, Y. Wang, X. Gao, W. Yang, X. Wang, Q. Zhao, K. Shi, P. Gao, G. Xing, Q. Xiong*, Q. Zhang*, Room-temperature continuous-wave pumped exciton polariton condensation in a perovskite microcavity. Science Advances, 11, eadr1652 (2025)
Y. Wang#, H. Xu#, X. Deng, T. Liew, S. Ghosh*, Q. Xiong*, Topological Single Photon Emission from Quantum Emitter Chains, npj Quantum Information, 10, 13 (2024)
Y. Shi#, Y. Gan#, Y. Chen, Y. Wang, S. Ghosh*, A. Kavokin*, Q. Xiong*, Coherent optical spin Hall transport for polaritonics at room temperature, Nature Materials, 24, 56–62 (2025), https://doi.org/10.1038/s41563-024-02028-2 .
Q. H. Tran*, S. Ghosh*, K. Nakajima*. Quantum-classical Hybrid Information Processing via a Single Quantum System, Phys. Rev. Research 5, 043127 (2023)
T. Krisnanda*, H. Xu, S. Ghosh*, and T. C. H. Liew, Tomographic completeness and robustness of quantum reservoir networks, Phys. Rev. A 107, 042402 (2023)
Y. Chen#, Y. Shi#, Y. Gan, H. Liu, T. Li, S. Ghosh*, Q. Xiong*. Unraveling the Ultrafast Coherent Dynamics of Exciton Polariton Propagation at Room Temperature. Nano Letters 23 (18), 8704-8711 (2023)
J.Q. Wu#, S. Ghosh#, Y.S. Gan, Y. Shi, S. Mansal, H.D. Sun, B.L. Zhang, T.C.H. Liew*, R. Su*, and Qihua Xiong*, “High-order topological polariton corner state lasing”, Science Advances 9, eadg432. (2023)
Y. Chen, J. Feng*, Y. Huang, W. Chen, R. Su, S. Ghosh, Y. Hou, Q. Xiong*, C.-W. Qiu*, Compact spin-valley-locked perovskite emission, Nature Materials 22, 1065–1070 (2023)
J.Q. Wu, R. Su*, A. Fieramosca, S. Ghosh, J.X. Zhao, T.C.H. Liew*, and Qihua Xiong*, “Perovskite polariton parametric oscillator”, Adv. Photon. 3, 055003 (2021)
R. Su*,#, S. Ghosh#, T.C.H. Liew*, and Qihua Xiong*, “Optical switching of topological phase in a perovskite polariton lattice”, Science Advances 7, eabf8049. DOI: 10.1126/sciadv.abf8049 (2021)
R. Su#, S. Ghosh#, J. Wang, S. Liu, C. Diederichs, T.C.H. Liew*, and Qihua Xiong*, “Observation of exciton polariton condensation in a perovskite lattice at room temperature”, Nature Physics 16, 301-306 (2020)
Email: sanjibghosh@cuhk.edu.sg
phone number: (0755) 23519586
Address: Office RA213, Longgang No.2001, Longxiang Avenue, Shenzhen, Guangdong, China
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