Department of Physics, Indian Institute of Technology Bombay, Mumbai, India
S. Widmann, J. Bellmann, J. Düreth, S. Dam, C. G. Mayer, P. Gagel, S. Betzold, M. Emmerling, S. Mandal, R. Banerjee, T. C. H. Liew, R. Thomale, S. Höfling, and S. Klembt, “Artificial gauge fields and dimensions in a polariton hofstadter ladder”, Nature Communications 17, 1586 (2026).
M. Wei, G.-G. Liu, Y. Long, Z. Cheng, S. Han, S. Mandal, and B. Zhang, “Terahertz spin-selective dielectric metasurfaces from exceptional points”, PhotoniX 7 (1), 6 (2026).
R. Li, R. Banerjee, S. Mandal, D. Li, Y. Long, T. Ma, J.-W. Liu, G.-G. Liu, Y. Chong, B. Zhang, and E.-P. Li, “Observation of Fractional Disclination Charges Induced by Gain and Loss”, Electromagnetic Science, doi: 10.23919/emsci.2025.0054, (2026).
Z. Yu, F. Jin, J. Ren, S. Mandal, B. Zhang, and R. Su, “Topological exciton-polaritons with negative coupling”, Nature Communications 17, 1269 (2026).
S. Mandal, Z. Wang, R. Banerjee, H. T. Teo, P. Zhou, X. Xi, Z. Gao, G. G. Liu, and B. Zhang, “Photonic bilayer Chern insulator with corner states”, Phys. Rev. Lett. 135, 016903 (2025), [arxiv version].
F. Jin, S. Mandal, X. Wang, B. Zhang, and R. Su, “Perovskite topological exciton-polariton disclination laser at room temperature”, Nature Communications 16, 6002 (2025), [arxiv version].
G. G. Liu, S. Mandal, X. Xi, Q. Wang, C. Devescovi, A. Morales-Pérez, Z. Wang, L. Yang, R. Banerjee, Y. Long, Y. Meng, P. Zhou, Z. Gao, Y. Chong, A. García-Etxarri, M. G. Vergniory, and B. Zhang, “Photonic Axion Insulator”, Science 387,162-166 (2025).
R. Banerjee, S. Mandal, Y. Y. Terh, S. Lin, G. G. Liu, B. Zhang, and Y. D. Chong, “Topological disclination states and charge fractionalization in a non-Hermitian lattice”, Phys. Rev. Lett. 133, 233804 (2024), [arxiv version].
F. Jin, S. Mandal, Z. Zhang, J. Wu, W. Wen, J. Ren, B. Zhang, T. C. H. Liew, Q. Xiong, and R. Su, “Observation of perovskite topological valley exciton-polaritons at room temperature” Nature Communications 15, 10563 (2024), [arxiv version].
H. T. Teo, S. Mandal, Y. Long, H. Xue, and B. Zhang, “Pseudomagnetic suppression of non-Hermitian skin effect”, Science Bulletin 69, 1667-1673 (2024), [arxiv version].
P. Zhou, G. G. Liu, Z. Wang, S. Li, Q. Xie, Y. Zhang, S. Mandal, X. Xi, Z. Gao, L. Deng, and B. Zhang, “Realization of a quadrupole topological insulator phase in a gyromagnetic photonic crystal”, National Science Review, 11, nwae121 (2024), [arxiv version].
G. G. Liu, S. Mandal, P. Zhou, X. Xi, R. Banerjee, Y. H. Hu, M. Wei, M. Wang, Q. Wang, Z. Gao, H. Chen, Y. Yang, Y. Chong, and B. Zhang,“Localization of chiral edge states by the non-Hermitian skin effect”, Phys. Rev. Lett. 132, 113802 (2024), [arxiv version].
J. Wu, S. Ghosh, Y. Gan, Y. Shi, S. Mandal, H. Sun, B. Zhang, T. C. H. Liew, R. Su, and Q. Xiong, “Higher-order topological polariton corner state lasing”, Science Advances 9, 21, eadg4322 (2023).
X. Xi, B. Yan, L. Yang, Y. Meng, Z. X. Zhu, J. M. Chen, Z. Wang, P. Zhou, P. P. Shum, Y. Yang, H. Chen, S. Mandal, G. G. Liu, B. Zhang, and Z. Gao, “Topological antichiral surface states in a magnetic Weyl photonic crystal”, Nature Communications 14, 1991 (2023).
S. Mandal, G. G. Liu, and B. Zhang, “Topology with Memory in Nonlinear Driven-Dissipative Photonic Lattices”, ACS Photonics 10, 1, 147–154 (2023), [arxiv version].
R. Bao, S. Mandal, H. Xu, X. Xu, R. Banerjee, and T. C. H. Liew, “Spin-polarized antichiral exciton-polariton edge states”, Phys. Rev. B 106, 23, 235310 (2022), [arxiv version].
S. Mandal, R. Banerjee, and T. C. H. Liew, “From the Topological Spin-Hall Effect to the Non-Hermitian Skin Effect in an Elliptical Micropillar Chain”, ACS Photonics 9, 2, 527–539 (2022), [arxiv version].
H. Xu, K. Dini, X. Xu, R. Banerjee, S. Mandal, and T. C. H. Liew, “Nonreciprocal exciton-polariton ring lattices”, Phys. Rev. B 104, 19 (2021), [arxiv version].
X. Xu, H. Xu, S. Mandal, R. Banerjee, S. Ghosh, and T. C. H. Liew, “Interaction-induced double-sided skin effect in an exciton-polariton system”, Phys. Rev. B 103, 23, 235306 (2021), [arxiv version].
R. Banerjee, S. Mandal, and T. C. H. Liew, “Optically induced topological spin-valley Hall effect for exciton polaritons”, Phys. Rev. B 103, 20, L201406 (2021), [arxiv version].
S. Mandal, R. Banerjee, E. A. Ostrovskaya, and T. C. H. Liew, “Nonreciprocal Transport of Exciton Polaritons in a Non-Hermitian Chain”, Phys. Rev. Lett. 125, 12, 123902 (2020), [arxiv version].
R. Banerjee, S. Mandal, and T. C. H. Liew, “Coupling between Exciton-Polariton Corner Modes through Edge States”, Phys.Rev. Lett. 124, 6, 063901(2020), [arxiv version].
S. Mandal, R. Banerjee, and T. C. H. Liew, “One-Way Reflection-Free Exciton-Polariton Spin-Filtering Channel”, Phys. Rev. Applied 12, 5, 054058 (2019), [arxiv version].
S. Mandal, K. Dini, O. V. Kibis, and T. C. H. Liew, “On the possibility of a terahertz light emitting diode based on a dressed quantum well”, Scientific Reports 9, 16320 (2019), [arxiv version].
S. Mandal, R. Ge, and T. C. H. Liew, “Antichiral edge states in an exciton polariton strip”, Phys. Rev. B 99, 11, 115423 (2019), [arxiv version].
S. Mandal, T. C. H. Liew, and O. V. Kibis, “Semiconductor quantum well irradiated by a two-mode electromagnetic field as a terahertz emitter”, Phys. Rev. A 97, 4, 043860 (2018), [arxiv version].
M. Klaas, S. Mandal, T. C. H. Liew, M. Amthor, S. Klembt, L. Worschech, C. Schneider, and S. Höfling, “Optical probing of the Coulomb interactions of an electrically pumped polariton condensate”, Appl. Phys. Lett. 110, 15, 151103 (2017).
R. Bao, R. Banerjee, S. Mandal, H. Xu, S. Li, J. Gao, and T. C. H. Liew, “Exciton-Polariton hybrid skin-topological states”, arXiv:2512.01768 (2025).
S. Mandal, G. G. Liu, Y. Chong, and B. Zhang, “Reshaping Quantum Hall Realms with non-Hermiticity”, NTU Physics INSIGHTS (2023), Issue 1, pp. 11-12 (Newsletter).
H. T. Teo, S. Mandal, Y. Long, H. Xue, and B. Zhang, “Pseudomagnetic suppression of non-Hermitian skin effect”, International Conference on Metamaterials, Photonic Crystals and Plasmonics, 2023, pp. 966–967 (conference paper).