Quantum electrodynamics of semiconducting nanomaterials in optical microcavities
<p>Semiconducting nanocrystals in open-access microcavities are promising systems in which enhanced light-matter interactions lead to quantum effects such as the modulation of the spontaneous emission process and exciton-polariton formation. In this thesis I present improvements of the open ca...
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| Format: | Thesis |
| Language: | English |
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2017
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| _version_ | 1797086793931161600 |
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| author | Flatten, L |
| author2 | Smith, J |
| author_facet | Smith, J Flatten, L |
| author_sort | Flatten, L |
| collection | OXFORD |
| description | <p>Semiconducting nanocrystals in open-access microcavities are promising systems in which enhanced light-matter interactions lead to quantum effects such as the modulation of the spontaneous emission process and exciton-polariton formation. In this thesis I present improvements of the open cavity platform which serves to confine the electromagnetic field with mode volumes down to the λ<sup>3</sup> regime and demonstrate results in both the weak and strong coupling regimes of cavity quantum electrodynamics with a range of different low-dimensional materials. I report cavity fabrication details allowing a peak finesse of 5 × 10<sup>4</sup> and advanced photonic structures such as coupled cavities in the open cavity geometry.</p> <p>By incorporating two-dimensional materials and nanoplatelets in the cavity I demonstrate the strong coupling regime of light-matter interaction with the formation of exciton-polaritons, quasi-particles composed of both photon and exciton, at room temperature. In the perturbative weak coupling regime I show pronounced modulation of the single-photon emission from CdSe/ZnS quantum dots and the two-dimensional material WSe<sub>2</sub> and demonstrate Purcell enhancement of the spontaneous emission rate by factors of 2 at room temperature and 8 at low temperature. The findings presented in this thesis pave the way to establish open microcavities as a platform for a wide range of applications in nanophotonics and quantum information technologies.</p> |
| first_indexed | 2024-03-07T02:27:01Z |
| format | Thesis |
| id | oxford-uuid:a5f4797f-ea23-49e4-bd1e-2483154508d6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:27:01Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | oxford-uuid:a5f4797f-ea23-49e4-bd1e-2483154508d62022-03-27T02:44:00ZQuantum electrodynamics of semiconducting nanomaterials in optical microcavitiesThesishttp://purl.org/coar/resource_type/c_db06uuid:a5f4797f-ea23-49e4-bd1e-2483154508d6OpticsPhysicsEnglishORA Deposit2017Flatten, LSmith, J<p>Semiconducting nanocrystals in open-access microcavities are promising systems in which enhanced light-matter interactions lead to quantum effects such as the modulation of the spontaneous emission process and exciton-polariton formation. In this thesis I present improvements of the open cavity platform which serves to confine the electromagnetic field with mode volumes down to the λ<sup>3</sup> regime and demonstrate results in both the weak and strong coupling regimes of cavity quantum electrodynamics with a range of different low-dimensional materials. I report cavity fabrication details allowing a peak finesse of 5 × 10<sup>4</sup> and advanced photonic structures such as coupled cavities in the open cavity geometry.</p> <p>By incorporating two-dimensional materials and nanoplatelets in the cavity I demonstrate the strong coupling regime of light-matter interaction with the formation of exciton-polaritons, quasi-particles composed of both photon and exciton, at room temperature. In the perturbative weak coupling regime I show pronounced modulation of the single-photon emission from CdSe/ZnS quantum dots and the two-dimensional material WSe<sub>2</sub> and demonstrate Purcell enhancement of the spontaneous emission rate by factors of 2 at room temperature and 8 at low temperature. The findings presented in this thesis pave the way to establish open microcavities as a platform for a wide range of applications in nanophotonics and quantum information technologies.</p> |
| spellingShingle | Optics Physics Flatten, L Quantum electrodynamics of semiconducting nanomaterials in optical microcavities |
| title | Quantum electrodynamics of semiconducting nanomaterials in optical microcavities |
| title_full | Quantum electrodynamics of semiconducting nanomaterials in optical microcavities |
| title_fullStr | Quantum electrodynamics of semiconducting nanomaterials in optical microcavities |
| title_full_unstemmed | Quantum electrodynamics of semiconducting nanomaterials in optical microcavities |
| title_short | Quantum electrodynamics of semiconducting nanomaterials in optical microcavities |
| title_sort | quantum electrodynamics of semiconducting nanomaterials in optical microcavities |
| topic | Optics Physics |
| work_keys_str_mv | AT flattenl quantumelectrodynamicsofsemiconductingnanomaterialsinopticalmicrocavities |