Mak, K. F., McGill, K. L., Park, J. & McEuen, P. L. The valley Hall effect in MoS2 transistors. Science 344, 1489–1492 (2014).
Lee, J., Mak, K. F. & Shan, J. Electrical control of the valley Hall effect in bilayer MoS2 transistors. Nat. Nanotechnol. 11, 421–425 (2016).
Schaibley, J. R. et al. Valleytronics in 2D materials. Nat. Rev. Mater. 1, 16055 (2016).
Vitale, S. A. et al. Valleytronics: opportunities, challenges, and paths forward. Small 14, 1801483 (2018).
Wang, G. et al. Colloquium: Excitons in atomically thin transition metal dichalcogenides. Rev. Mod. Phys. 90, 021001 (2018).
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).
Ciarrocchi, A., Tagarelli, F., Avsar, A. & Kis, A. Excitonic devices with van der Waals heterostructures: valleytronics meets twistronics. Nat. Rev. Mater. https://doi.org/10.1038/s41578-41021-00408-41577 (2022).
Wolf, S. et al. Spintronics: a spin-based electronics vision for the future. Science 294, 1488–1495 (2001).
Bhatti, S. et al. Spintronics based random access memory: a review. Mater. Today 20, 530–548 (2017).
Bonilla, M. et al. Strong room-temperature ferromagnetism in VSe2 monolayers on van der Waals substrates. Nat. Nanotechnol. 13, 289–293 (2018).
Chen, Z. & Segev, M. Highlighting photonics: looking into the next decade. eLight 1, 1–12 (2021).
Levy, J. S. et al. CMOS-compatible multiple-wavelength oscillator for on-chip optical interconnects. Nat. Photonics 4, 37–40 (2010).
Cheben, P., Halir, R., Schmid, J. H., Atwater, H. A. & Smith, D. R. Subwavelength integrated photonics. Nature 560, 565–572 (2018).
Fleury, R., Sounas, D. L., Sieck, C. F., Haberman, M. R. & Alu, A. Sound isolation and giant linear nonreciprocity in a compact acoustic circulator. Science 343, 516–519 (2014).
Barzanjeh, S. et al. Mechanical on-chip microwave circulator. Nat. Commun. 8, 953 (2017).
Scheucher, M., Hilico, A., Will, E., Volz, J. & Rauschenbeutel, A. Quantum optical circulator controlled by a single chirally coupled atom. Science 354, 1577–1580 (2016).
Nagulu, A., Reiskarimian, N. & Krishnaswamy, H. Non-reciprocal electronics based on temporal modulation. Nat. Electron. 3, 241–250 (2020).
Lee, D. et al. Hyperbolic metamaterials: fusing artificial structures to natural 2D materials. eLight 2, 1–23 (2022).
Chen, P. et al. Chiral coupling of valley excitons and light through photonic spin–orbit interactions. Adv. Opt. Mater. 8, 1901233 (2020).
Chen, Y. et al. Multidimensional nanoscopic chiroptics. Nat. Rev. Phys. 4, 113–124 (2021).
Gong, S. H., Alpeggiani, F., Sciacca, B., Garnett, E. C. & Kuipers, L. Nanoscale chiral valley-photon interface through optical spin-orbit coupling. Science 359, 443–447 (2018).
Chervy, T. et al. Room temperature chiral coupling of valley excitons with spin-momentum locked surface plasmons. ACS Photonics 5, 1281–1287 (2018).
Sun, L. et al. Separation of valley excitons in a MoS2 monolayer using a subwavelength asymmetric groove array. Nat. Photonics 13, 180–184 (2019).
Gong, S.-H., Komen, I., Alpeggiani, F. & Kuipers, L. Nanoscale optical addressing of valley pseudospins through transverse optical spin. Nano Lett. 20, 4410–4415 (2020).
Chen, P.-G. et al. Long-range directional routing and spatial selection of high-spin-purity valley trion emission in monolayer WS2. ACS Nano 15, 18163–18171 (2021).
Zeng, H., Dai, J., Yao, W., Xiao, D. & Cui, X. Valley polarization in MoS2 monolayers by optical pumping. Nat. Nanotechnol. 7, 490–493 (2012).
Mak, K. F., He, K., Shan, J. & Heinz, T. F. Control of valley polarization in monolayer MoS2 by optical helicity. Nat. Nanotechnol. 7, 494–498 (2012).
Cao, T. et al. Valley-selective circular dichroism of monolayer molybdenum disulphide. Nat. Commun. 3, 887 (2012).
Xiao, J. et al. Nonlinear optical selection rule based on valley-exciton locking in monolayer ws2. Light Sci. Appl. 4, e366–e366 (2015).
Luo, Y. et al. Deterministic coupling of site-controlled quantum emitters in monolayer WSe2 to plasmonic nanocavities. Nat. Nanotechnol. 13, 1137–1142 (2018).
Wu, Z., Li, J., Zhang, X., Redwing, J. M. & Zheng, Y. Room-temperature active modulation of valley dynamics in a monolayer semiconductor through chiral Purcell effects. Adv. Mater. 31, e1904132 (2019).
Oulton, R. F., Sorger, V. J., Genov, D. A., Pile, D. F. P. & Zhang, X. A hybrid plasmonic waveguide for subwavelength confinement and long-range propagation. Nat. Photonics 2, 496–500 (2008).
Palik, E.D. Handbook of Optical Constants of Solids Vol. 3 (Academic Press, 1998).
