# Quantum coherence and interference of a single moiré exciton in nano-fabricated twisted monolayer semiconductor heterobilayers https://mdr.nims.go.jp/datasets/fedaecfc-102f-4883-9174-9411fad063a6 ## File - [s41467-024-48623-4.pdf](https://mdr.nims.go.jp/filesets/13c6d6ef-60a4-4d74-bdd0-e88400126139/download) ([Detail](https://mdr.nims.go.jp/filesets/13c6d6ef-60a4-4d74-bdd0-e88400126139.md)) ## Id fedaecfc-102f-4883-9174-9411fad063a6 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2025-02-26T05:47:17.149581Z ## Updated at 2025-02-27T03:30:16.195033Z ## Published at 2025-02-27T03:30:16.444468Z ## Doi ## First published url https://doi.org/10.1038/s41467-024-48623-4 ## Date published 2024-06-08 ## Recorded date published ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: Quantum coherence and interference of a single moiré exciton in nano-fabricated twisted monolayer semiconductor heterobilayers title_type: original lang: en ## Description - description: Moiré potential formed by stacking two monolayer semiconducting transition metal dichalcogenides with slightly lattice mismatch can act as periodic quantum confinement for optically generated exciton, generating spatially ordered zero-dimensional quantum system. However, broad emission spectrum arising from inhomogeneity among moiré potential hinders the exploration of the intrinsic properties of moiré exciton and its application for quantum optics. In this study, we have demonstrated a new method to realize the optical observation of quantum coherence and interference of a single moiré exciton in twisted monolayer semiconducting heterobilayer beyond the diffraction limit of light. A significant single and sharp photoluminescence peak from a single moiré exciton has been successfully demonstrated due to the restriction of optical excitation and detection of moiré potentials by applying the nano-fabrication to the heterobilayer. We present that the decoherence of a single moiré exciton has been accelerated with elevating temperature and excitation power density, which is determined by scattering process of moiré exciton and acoustic phonons, and between moiré excitons. The longer duration of quantum coherence of a single moiré exciton, reaching more than 10 ps, has been measured by the interferogram of emission signal at low temperature of 4 K, which is much longer than that of the exciton in a monolayer semiconductor. Moreover, the significant quantum interference has revealed the coupling between moiré excitons trapped in different moiré potential minima. The longer quantum coherence and interference of moiré exciton demonstrated in this study will provide the potential application toward quantum technologies based on moiré quantum systems. description_type: abstract lang: und ## Creator - name: Haonan Wang role: author - name: Heejun Kim role: author - name: Duanfei Dong role: author - name: Keisuke Shinokita role: author - name: Kenji Watanabe role: author orcid: https://orcid.org/0000-0003-3701-8119 organization: National Institute for Materials Science ror: https://ror.org/026v1ze26 - name: Takashi Taniguchi role: author orcid: https://orcid.org/0000-0002-1467-3105 organization: National Institute for Materials Science ror: https://ror.org/026v1ze26 - name: Kazunari Matsuda role: author ## Contact agent ## Publisher organization: Springer Science and Business Media LLC ## Managing organization ## Keyword - subject: Moiré potential schema: not_defined - subject: quantum coherence schema: not_defined - subject: twisted semiconducting heterobilayer schema: not_defined ## Rights - identifier: https://creativecommons.org/licenses/by/4.0/ ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo ## Journal - title: Nature Communications issn: '20411723' volume: '15' issue: '1' article_number: '4905' ## Conference ## Related item ## Funding - identifier: JP16H00910 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP16H06331 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP19K22142 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP20H05664 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP21H05232 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP21H05235 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP21H05233 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP22K18986 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: A3 Foresight Program funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP17H06786 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP19K14633 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP21H01012 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP20H00354 funder_name: MEXT | Japan Society for the Promotion of Science - identifier: JP20H00354 funder_name: MEXT | Japan Society for the Promotion of Science - funder_name: Collaboration Program of the Laboratory for Complex Energy Processes, Institute of Advanced Energy, Kyoto University - identifier: JPMJFR213K funder_name: MEXT | Japan Science and Technology Agency - identifier: K-CONNEX funder_name: Ministry of Education, Culture, Sports, Science and Technology - identifier: JPMXP0112101001 funder_name: Ministry of Education, Culture, Sports, Science and Technology ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: 13c6d6ef-60a4-4d74-bdd0-e88400126139 filename: s41467-024-48623-4.pdf content_type: application/pdf size: 1746939 md5: 899242e595df1cca608a030d8be229a3 ## Thumbnail fileset_id: 13c6d6ef-60a4-4d74-bdd0-e88400126139 filename: s41467-024-48623-4.pdf