Topological valley Hall polariton condensation
Source abstract
Abstract
A photonic topological insulator features robust directional propagation and immunity to defect perturbations of the edge/surface state. Exciton-polaritons, that is, the hybrid quasiparticles of excitons and photons in semiconductor microcavities, have been proposed as a tunable nonlinear platform for emulating topological phenomena. However, mainly due to excitonic material limitations, experimental observations so far have not been able to enter the nonlinear condensation regime or only show localized condensation in one dimension. Here we show a topological propagating edge state with polariton condensation at room temperature and without any external magnetic field. We overcome material limitations by using excitonic CsPbCl3 halide perovskites with a valley Hall lattice design. The polariton lattice features a large bandgap of 18.8 meV and exhibits strong nonlinear polariton condensation with clear long-range spatial coherence across the critical pumping density. The geometric parameters and material composition of our nonlinear many-body photonic system platform can in principle be tailored to study topological phenomena of other interquasiparticle interactions.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Strong Light-Matter Interactions · Topological Materials and Phenomena · Quantum and electron transport phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (58)
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1. Klitzing, K. V., Dorda, G. & Pepper, M. New method for high-accuracy determination of the fine-structure constant based on quantized Hall resistance. Phys. Rev. Lett. 45, 494–497 (1980).10.1103/PhysRevLett.45.494 ↗
2. Hasan, M. Z. & Kane, C. L. Colloquium: Topological insulators. Rev. Mod. Phys. 82, 3045–3067 (2010).10.1103/RevModPhys.82.3045 ↗
3. Cooper, N. R., Dalibard, J. & Spielman, I. B. Topological bands for ultracold atoms. Rev. Mod. Phys. 91, 15005 (2019).10.1103/RevModPhys.91.015005 ↗
4. Yang, Z. et al. Topological acoustics. Phys. Rev. Lett. 114, 114301 (2015).10.1103/PhysRevLett.114.114301 ↗
5. Lu, J. et al. Observation of topological valley transport of sound in sonic crystals. Nat. Phys. 13, 369–374 (2017).10.1038/nphys3999 ↗
6. Haldane, F. D. M. & Raghu, S. Possible realization of directional optical waveguides in photonic crystals with broken time-reversal symmetry. Phys. Rev. Lett. 100, 13904 (2008).10.1103/PhysRevLett.100.013904 ↗
7. Wang, Z., Chong, Y., Joannopoulos, J. D. & Soljačić, M. Observation of unidirectional backscattering-immune topological electromagnetic states. Nature 461, 772–775 (2009).10.1038/nature08293 ↗
8. Khanikaev, A. B. et al. Photonic topological insulators. Nat. Mater. 12, 233–239 (2013).10.1038/nmat3520 ↗
9. Lu, L., Joannopoulos, J. D. & Soljačić, M. Topological photonics. Nat. Photon. 8, 821–829 (2014).10.1038/nphoton.2014.248 ↗
10. Ozawa, T. et al. Topological photonics. Rev. Mod. Phys. 91, 15006 (2019).10.1103/RevModPhys.91.015006 ↗
11. Karzig, T., Bardyn, C.-E., Lindner, N. H. & Refael, G. Topological polaritons. Phys. Rev. X 5, 31001 (2015).
12. Bardyn, C.-E., Karzig, T., Refael, G. & Liew, T. C. H. Topological polaritons and excitons in garden-variety systems. Phys. Rev. B 91, 161413 (2015).10.1103/PhysRevB.91.161413 ↗
13. Nalitov, A. V., Solnyshkov, D. D. & Malpuech, G. Polariton Z topological insulator. Phys. Rev. Lett. 114, 116401 (2015).10.1103/PhysRevLett.114.116401 ↗
14. Kartashov, Y. V. & Skryabin, D. V. Two-dimensional topological polariton laser. Phys. Rev. Lett. 122, 83902 (2019).10.1103/PhysRevLett.122.083902 ↗
15. Deng, H., Weihs, G., Santori, C., Bloch, J. & Yamamoto, Y. Condensation of semiconductor microcavity exciton polaritons. Science 298, 199–202 (2002).10.1126/science.1074464 ↗
16. Kasprzak, J. et al. Bose–Einstein condensation of exciton polaritons. Nature 443, 409–414 (2006).10.1038/nature05131 ↗
17. Deng, H., Haug, H. & Yamamoto, Y. Exciton–polariton Bose–Einstein condensation. Rev. Mod. Phys. 82, 1489–1537 (2010).10.1103/RevModPhys.82.1489 ↗
18. Kim, N. Y. et al. Dynamical d-wave condensation of exciton–polaritons in a two-dimensional square-lattice potential. Nat. Phys. 7, 681–686 (2011).10.1038/nphys2012 ↗
19. Jacqmin, T. et al. Direct observation of Dirac cones and a flatband in a honeycomb lattice for polaritons. Phys. Rev. Lett. 112, 116402 (2014).10.1103/PhysRevLett.112.116402 ↗
20. Cristofolini, P. et al. Coupling quantum tunneling with cavity photons. Science 336, 704–707 (2012).10.1126/science.1219010 ↗
21. Tsintzos, S. I. et al. Electrical tuning of nonlinearities in exciton–polariton condensates. Phys. Rev. Lett. 121, 37401 (2018).10.1103/PhysRevLett.121.037401 ↗
22. Liu, W. et al. Generation of helical topological exciton–polaritons. Science 370, 600–604 (2020).10.1126/science.abc4975 ↗
23. Li, M. et al. Experimental observation of topological Z2 exciton–polaritons in transition metal dichalcogenide monolayers. Nat. Commun. 12, 4425 (2021).10.1038/s41467-021-24728-y ↗
24. Guddala, S. et al. Topological phonon–polariton funneling in midinfrared metasurfaces. Science 374, 225–227 (2021).10.1126/science.abj5488 ↗
25. St-Jean, P. et al. Lasing in topological edge states of a one-dimensional lattice. Nat. Photon. 11, 651–656 (2017).10.1038/s41566-017-0006-2 ↗
26. Klembt, S. et al. Exciton–polariton topological insulator. Nature 562, 552–556 (2018).10.1038/s41586-018-0601-5 ↗
27. Dusel, M. et al. Room-temperature topological polariton laser in an organic lattice. Nano Lett. 21, 6398–6405 (2021).10.1021/acs.nanolett.1c00661 ↗
28. Su, R. et al. Perovskite semiconductors for room-temperature exciton-polaritonics. Nat. Mater. 20, 1315–1324 (2021).10.1038/s41563-021-01035-x ↗
29. Su, R. et al. Room-temperature polariton lasing in all-inorganic perovskite nanoplatelets. Nano Lett. 17, 3982–3988 (2017).10.1021/acs.nanolett.7b01956 ↗
30. Peng, K. et al. Room-temperature polariton quantum fluids in halide perovskites. Nat. Commun. 13, 7388 (2022).
31. Su, R. et al. Observation of exciton polariton condensation in a perovskite lattice at room temperature. Nat. Phys. 16, 301–306 (2020).10.1038/s41567-019-0764-5 ↗
32. Łempicka-Mirek, K. et al. Electrically tunable Berry curvature and strong light–matter coupling in liquid crystal microcavities with 2D perovskite. Sci. Adv. 8, eabq7533 (2023).10.1126/sciadv.abq7533 ↗
33. Tao, R. et al. Halide perovskites enable polaritonic XY spin Hamiltonian at room temperature. Nat. Mater. 21, 761–766 (2022).10.1038/s41563-022-01276-4 ↗
34. Rui, S. et al. Direct measurement of a non-Hermitian topological invariant in a hybrid light–matter system. Sci. Adv. 7, eabj8905 (2022).
35. Ma, T. & Shvets, G. All-Si valley-Hall photonic topological insulator. New J. Phys. 18, 025012 (2016).10.1088/1367-2630/18/2/025012 ↗
36. Dong, J.-W., Chen, X.-D., Zhu, H., Wang, Y. & Zhang, X. Valley photonic crystals for control of spin and topology. Nat. Mater. 16, 298–302 (2017).10.1038/nmat4807 ↗
37. Shalaev, M. I., Walasik, W., Tsukernik, A., Xu, Y. & Litchinitser, N. M. Robust topologically protected transport in photonic crystals at telecommunication wavelengths. Nat. Nanotechnol. 14, 31–34 (2019).10.1038/s41565-018-0297-6 ↗
38. He, X.-T. et al. A silicon-on-insulator slab for topological valley transport. Nat. Commun. 10, 872 (2019).
39. Zeng, Y. et al. Electrically pumped topological laser with valley edge modes. Nature 578, 246–250 (2020).10.1038/s41586-020-1981-x ↗
40. Bleu, O., Malpuech, G. & Solnyshkov, D. D. Robust quantum valley Hall effect for vortices in an interacting bosonic quantum fluid. Nat. Commun. 9, 3991 (2018).10.1038/s41467-018-06520-7 ↗
41. Töpfer, J. D. et al. Engineering spatial coherence in lattices of polariton condensates. Optica 8, 106–113 (2021).10.1364/OPTICA.409976 ↗
42. Gao, T. et al. Observation of non-Hermitian degeneracies in a chaotic exciton–polariton billiard. Nature 526, 554–558 (2015).10.1038/nature15522 ↗
43. Pernet, N. et al. Gap solitons in a one-dimensional driven–dissipative topological lattice. Nat. Phys. 18, 678–684 (2022).10.1038/s41567-022-01599-8 ↗
44. Zhao, H. et al. Non-Hermitian topological light steering. Science 365, 1163–1166 (2019).10.1126/science.aay1064 ↗
45. Solnyshkov, D. D. et al. Microcavity polaritons for topological photonics. Opt. Mater. Express 11, 1119–1142 (2021).10.1364/OME.414890 ↗
46. Ardizzone, V. et al. Polariton Bose–Einstein condensate from a bound state in the continuum. Nature 605, 447–452 (2022).10.1038/s41586-022-04583-7 ↗
47. Kavokin, A. et al. Polariton condensates for classical and quantum computing. Nat. Rev. Phys. 4, 435–451 (2022).10.1038/s42254-022-00447-1 ↗
48. Dikopoltsev, A. et al. Topological insulator vertical-cavity laser array. Science 373, 1514–1517 (2021).10.1126/science.abj2232 ↗
49. Bahari, B. et al. Nonreciprocal lasing in topological cavities of arbitrary geometries. Science 358, 636–640 (2017).10.1126/science.aao4551 ↗
50. Bandres, M. A. et al. Topological insulator laser: experiments. Science 359, eaar4005 (2018).10.1126/science.aar4005 ↗
51. Rosiek, C. A. et al. Observation of strong backscattering in valley-Hall photonic topological interface modes. Nat. Photon. 17, 386–392 (2023).10.1038/s41566-023-01189-x ↗
52. Long, G. et al. Chiral-perovskite optoelectronics. Nat. Rev. Mater. 5, 423–439 (2020).10.1038/s41578-020-0181-5 ↗
53. Lundt, N. et al. Optical valley Hall effect for highly valley-coherent exciton-polaritons in an atomically thin semiconductor. Nat. Nanotechnol. 14, 770–775 (2019).10.1038/s41565-019-0492-0 ↗
54. Berestennikov, A. S. et al. Enhanced photoluminescence of halide perovskite nanocrystals mediated by a higher-order topological metasurface. J. Phys. Chem. C 125, 9884–9890 (2021).10.1021/acs.jpcc.1c01492 ↗
55. Wu, L.-H. & Hu, X. Scheme for achieving a topological photonic crystal by using dielectric material. Phys. Rev. Lett. 114, 223901 (2015).10.1103/PhysRevLett.114.223901 ↗
56. Berestennikov, A. et al. Perovskite microlaser integration with metasurface supporting topological waveguiding. ACS Nano 17, 4445–4452 (2023).10.1021/acsnano.2c09883 ↗
57. Schneider, C. et al. An electrically pumped polariton laser. Nature 497, 348–352 (2013).10.1038/nature12036 ↗
58. Suchomel, H. et al. Platform for electrically pumped polariton simulators and topological lasers. Phys. Rev. Lett. 121, 257402 (2018).10.1103/PhysRevLett.121.257402 ↗