Extraction of coherence times of biexciton and exciton photons emitted by a single resonantly excited quantum dot under controlled dephasing
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913853341696000 |
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| author | Lee, Jaewon Stalker, Charlie Colicchio, Loris Cardoso, Fernando Redivo Seelbinder, Jan Höfling, Sven Schneider, Christian Villas-Boas, Celso J. Predojević, Ana |
| author_facet | Lee, Jaewon Stalker, Charlie Colicchio, Loris Cardoso, Fernando Redivo Seelbinder, Jan Höfling, Sven Schneider, Christian Villas-Boas, Celso J. Predojević, Ana |
| contents | The visibility of two-photon interference is limited by the indistinguishability of the photons. In the cascaded emission of a three-level system, such as a single quantum dot, the indistinguishability of each photon in the pair is primarily affected by two main factors: the temporal correlation between paired photons and dephasing. Investigating the individual effects of these factors on photon indistinguishability is challenging, as both factors affect it simultaneously. In this study, we investigate the temperature-dependent two-photon interference visibility of the biexciton and exciton photons emitted from a single quantum dot under two-photon resonant excitation, while keeping temporal correlation between the paired photons intact. Finally, we simultaneously extract the coherence times of the biexciton and exciton photons as a function of temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_16848 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Extraction of coherence times of biexciton and exciton photons emitted by a single resonantly excited quantum dot under controlled dephasing Lee, Jaewon Stalker, Charlie Colicchio, Loris Cardoso, Fernando Redivo Seelbinder, Jan Höfling, Sven Schneider, Christian Villas-Boas, Celso J. Predojević, Ana Quantum Physics The visibility of two-photon interference is limited by the indistinguishability of the photons. In the cascaded emission of a three-level system, such as a single quantum dot, the indistinguishability of each photon in the pair is primarily affected by two main factors: the temporal correlation between paired photons and dephasing. Investigating the individual effects of these factors on photon indistinguishability is challenging, as both factors affect it simultaneously. In this study, we investigate the temperature-dependent two-photon interference visibility of the biexciton and exciton photons emitted from a single quantum dot under two-photon resonant excitation, while keeping temporal correlation between the paired photons intact. Finally, we simultaneously extract the coherence times of the biexciton and exciton photons as a function of temperature. |
| title | Extraction of coherence times of biexciton and exciton photons emitted by a single resonantly excited quantum dot under controlled dephasing |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2505.16848 |