Room temperature exciton-polaritons with two-dimensional WS2
Two-dimensional transition metal dichalcogenides exhibit strong optical transitions with significant potential for optoelectronic devices. In particular they are suited for cavity quantum electrodynamics in which strong coupling leads to polariton formation as a root to realisation of inversionless...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Journal article |
| Published: |
Nature Publishing Group
2016
|
| _version_ | 1797096889290588160 |
|---|---|
| author | Flatten, L He, Z Coles, D Trichet, A Powell, A Taylor, R Warner, J Smith, J |
| author_facet | Flatten, L He, Z Coles, D Trichet, A Powell, A Taylor, R Warner, J Smith, J |
| author_sort | Flatten, L |
| collection | OXFORD |
| description | Two-dimensional transition metal dichalcogenides exhibit strong optical transitions with significant potential for optoelectronic devices. In particular they are suited for cavity quantum electrodynamics in which strong coupling leads to polariton formation as a root to realisation of inversionless lasing, polariton condensation and superfluidity. Demonstrations of such strongly correlated phenomena to date have often relied on cryogenic temperatures, high excitation densities and were frequently impaired by strong material disorder. At room-temperature, experiments approaching the strong coupling regime with transition metal dichalcogenides have been reported, but well resolved exciton-polaritons have yet to be achieved. Here we report a study of monolayer WS2 coupled to an open Fabry-Perot cavity at room-temperature, in which polariton eigenstates are unambiguously displayed. In-situ tunability of the cavity length results in a maximal Rabi splitting of ~ΩRabi = 70 meV, exceeding the exciton linewidth. Our data are well described by a transfer matrix model appropriate for the large linewidth regime. This work provides a platform towards observing strongly correlated polariton phenomena in compact photonic devices for ambient temperature applications. |
| first_indexed | 2024-03-07T04:47:54Z |
| format | Journal article |
| id | oxford-uuid:d3f0b229-df66-4895-ba1e-0d9ef9a07ec9 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T04:47:54Z |
| publishDate | 2016 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | oxford-uuid:d3f0b229-df66-4895-ba1e-0d9ef9a07ec92022-03-27T08:14:53ZRoom temperature exciton-polaritons with two-dimensional WS2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d3f0b229-df66-4895-ba1e-0d9ef9a07ec9Symplectic Elements at OxfordNature Publishing Group2016Flatten, LHe, ZColes, DTrichet, APowell, ATaylor, RWarner, JSmith, JTwo-dimensional transition metal dichalcogenides exhibit strong optical transitions with significant potential for optoelectronic devices. In particular they are suited for cavity quantum electrodynamics in which strong coupling leads to polariton formation as a root to realisation of inversionless lasing, polariton condensation and superfluidity. Demonstrations of such strongly correlated phenomena to date have often relied on cryogenic temperatures, high excitation densities and were frequently impaired by strong material disorder. At room-temperature, experiments approaching the strong coupling regime with transition metal dichalcogenides have been reported, but well resolved exciton-polaritons have yet to be achieved. Here we report a study of monolayer WS2 coupled to an open Fabry-Perot cavity at room-temperature, in which polariton eigenstates are unambiguously displayed. In-situ tunability of the cavity length results in a maximal Rabi splitting of ~ΩRabi = 70 meV, exceeding the exciton linewidth. Our data are well described by a transfer matrix model appropriate for the large linewidth regime. This work provides a platform towards observing strongly correlated polariton phenomena in compact photonic devices for ambient temperature applications. |
| spellingShingle | Flatten, L He, Z Coles, D Trichet, A Powell, A Taylor, R Warner, J Smith, J Room temperature exciton-polaritons with two-dimensional WS2 |
| title | Room temperature exciton-polaritons with two-dimensional WS2 |
| title_full | Room temperature exciton-polaritons with two-dimensional WS2 |
| title_fullStr | Room temperature exciton-polaritons with two-dimensional WS2 |
| title_full_unstemmed | Room temperature exciton-polaritons with two-dimensional WS2 |
| title_short | Room temperature exciton-polaritons with two-dimensional WS2 |
| title_sort | room temperature exciton polaritons with two dimensional ws2 |
| work_keys_str_mv | AT flattenl roomtemperatureexcitonpolaritonswithtwodimensionalws2 AT hez roomtemperatureexcitonpolaritonswithtwodimensionalws2 AT colesd roomtemperatureexcitonpolaritonswithtwodimensionalws2 AT tricheta roomtemperatureexcitonpolaritonswithtwodimensionalws2 AT powella roomtemperatureexcitonpolaritonswithtwodimensionalws2 AT taylorr roomtemperatureexcitonpolaritonswithtwodimensionalws2 AT warnerj roomtemperatureexcitonpolaritonswithtwodimensionalws2 AT smithj roomtemperatureexcitonpolaritonswithtwodimensionalws2 |