%0 Journal Article %1 qianlasing %A Qian, Chenjiang %A Troue, Mirco %A Figueiredo, Johannes %A Soubelet, Pedro %A Villafañe, Viviana %A Beierlein, Johannes %A Klembt, Sebastian %A Stier, Andreas V. %A Höfling, Sven %A Holleitner, Alexander W. %A Finley, Jonathan J. %B Sci. Adv. %D 2024 %I American Association for the Advancement of Science %J Sci. Adv. %K c %N 2 %P eadk6359 %R 10.1126/sciadv.adk6359 %T Lasing of moiré trapped MoSe$_2$/WSe$_2$ interlayer excitons coupled to a nanocavity %U https://doi.org/10.1126/sciadv.adk6359 %V 10 %X We report lasing of moiré trapped interlayer excitons (IXs) by integrating a pristine hBN-encapsulated MoSe2/WSe2 heterobilayer into a high-Q (>104) nanophotonic cavity. We control the cavity-IX detuning using a magnetic field and measure their dipolar coupling strength to be 78 ± 4 micro?electron volts, fully consistent with the 82 micro?electron volts predicted by theory. The emission from the cavity mode shows clear threshold-like behavior as the transition is tuned into resonance with the cavity. We observe a superlinear power dependence accompanied by a narrowing of the linewidth as the distinct features of lasing. The onset and prominence of these threshold-like behaviors are pronounced at resonance while weak off-resonance. Our results show that a lasing transition can be induced in interacting moiré IXs with macroscopic coherence extending over the length scale of the cavity mode. Such systems raise interesting perspectives for low-power switching and synaptic nanophotonic devices using two-dimensional materials. A 2D material nanocavity laser operating in the regime of discrete localized excitons is achieved.

@article{qianlasing, abstract = {We report lasing of moiré trapped interlayer excitons (IXs) by integrating a pristine hBN-encapsulated MoSe2/WSe2 heterobilayer into a high-Q (>104) nanophotonic cavity. We control the cavity-IX detuning using a magnetic field and measure their dipolar coupling strength to be 78 ± 4 micro?electron volts, fully consistent with the 82 micro?electron volts predicted by theory. The emission from the cavity mode shows clear threshold-like behavior as the transition is tuned into resonance with the cavity. We observe a superlinear power dependence accompanied by a narrowing of the linewidth as the distinct features of lasing. The onset and prominence of these threshold-like behaviors are pronounced at resonance while weak off-resonance. Our results show that a lasing transition can be induced in interacting moiré IXs with macroscopic coherence extending over the length scale of the cavity mode. Such systems raise interesting perspectives for low-power switching and synaptic nanophotonic devices using two-dimensional materials. A 2D material nanocavity laser operating in the regime of discrete localized excitons is achieved.}, added-at = {2024-03-11T08:19:45.000+0100}, author = {Qian, Chenjiang and Troue, Mirco and Figueiredo, Johannes and Soubelet, Pedro and Villafañe, Viviana and Beierlein, Johannes and Klembt, Sebastian and Stier, Andreas V. and Höfling, Sven and Holleitner, Alexander W. and Finley, Jonathan J.}, biburl = {https://www.bibsonomy.org/bibtex/2e4806e447b791d960edc9748c5b324e9/ctqmat}, booktitle = {Sci. Adv.}, comment = {doi: 10.1126/sciadv.adk6359}, day = 10, doi = {10.1126/sciadv.adk6359}, interhash = {7a3af781ab206aae4d23b060d7fee351}, intrahash = {e4806e447b791d960edc9748c5b324e9}, journal = {Sci. Adv.}, keywords = {c}, month = {01}, number = 2, pages = {eadk6359}, publisher = {American Association for the Advancement of Science}, timestamp = {2024-04-26T15:50:38.000+0200}, title = {Lasing of moiré trapped MoSe$_{\mathbf{2}}$/WSe$_{\mathbf{2}}$ interlayer excitons coupled to a nanocavity}, url = {https://doi.org/10.1126/sciadv.adk6359}, volume = 10, year = 2024 }