Coherence, Dephasing, and Quantum Interference in Colloidal Perovskite Nanocrystals
As the development of photonic quantum technologies continues to be pushed forward, the need for a source of quantum light, the so-called quantum emitter, has been ever-growing. The requirements for a quantum emitter are onerous: indistinguishable photon or entangled photon pairs need to be generate...
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| Format: | Thesis |
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Massachusetts Institute of Technology
2024
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| Online Access: | https://hdl.handle.net/1721.1/154208 https://orcid.org/0000-0003-2994-6134 |
| _version_ | 1826205478469763072 |
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| author | Kaplan, Alexander E.K. |
| author2 | Bawendi, Moungi G |
| author_facet | Bawendi, Moungi G Kaplan, Alexander E.K. |
| author_sort | Kaplan, Alexander E.K. |
| collection | MIT |
| description | As the development of photonic quantum technologies continues to be pushed forward, the need for a source of quantum light, the so-called quantum emitter, has been ever-growing. The requirements for a quantum emitter are onerous: indistinguishable photon or entangled photon pairs need to be generated on-demand, which necessitates the presence of transform-limited emission. The hunt for ideal quantum emitters is ongoing: while there are many strong candidates, none meet all of the necessary requirements to enable the full capabilities of potential quantum technologies. Recently, colloidal cesium lead bromide perovskite nanocrystals have garnered interest for their potential use as quantum emitters. As a novel emitter, there is a prominent need for further characterization of perovskite nanocrystals, not only to learn more about the fundamental photophysics in these materials but also to establish their inherent properties as coherent sources of light.
In this thesis, I discuss what it means to be a quantum emitter, what it means for light to behave quantum mechanically, what kinds of quantum emitter properties are important, and how to measure those properties. I discuss the intrinsic capabilities of cesium lead halide perovskites, and what primes them to be the first colloidal quantum emitter. This thesis chronicles measuring Hong-Ou-Mandel (HOM) two-photon interference, the ubiquitous measure of quantum interference, showing HOM visibilities in colloidal materials for the first time. I also detail what types of experiments and further work can be done to build on what we know now, and hopefully provide insight into interesting future scientific inquiry. |
| first_indexed | 2024-09-23T13:13:29Z |
| format | Thesis |
| id | mit-1721.1/154208 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:13:29Z |
| publishDate | 2024 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1542082024-04-18T03:33:00Z Coherence, Dephasing, and Quantum Interference in Colloidal Perovskite Nanocrystals Kaplan, Alexander E.K. Bawendi, Moungi G Massachusetts Institute of Technology. Department of Chemistry As the development of photonic quantum technologies continues to be pushed forward, the need for a source of quantum light, the so-called quantum emitter, has been ever-growing. The requirements for a quantum emitter are onerous: indistinguishable photon or entangled photon pairs need to be generated on-demand, which necessitates the presence of transform-limited emission. The hunt for ideal quantum emitters is ongoing: while there are many strong candidates, none meet all of the necessary requirements to enable the full capabilities of potential quantum technologies. Recently, colloidal cesium lead bromide perovskite nanocrystals have garnered interest for their potential use as quantum emitters. As a novel emitter, there is a prominent need for further characterization of perovskite nanocrystals, not only to learn more about the fundamental photophysics in these materials but also to establish their inherent properties as coherent sources of light. In this thesis, I discuss what it means to be a quantum emitter, what it means for light to behave quantum mechanically, what kinds of quantum emitter properties are important, and how to measure those properties. I discuss the intrinsic capabilities of cesium lead halide perovskites, and what primes them to be the first colloidal quantum emitter. This thesis chronicles measuring Hong-Ou-Mandel (HOM) two-photon interference, the ubiquitous measure of quantum interference, showing HOM visibilities in colloidal materials for the first time. I also detail what types of experiments and further work can be done to build on what we know now, and hopefully provide insight into interesting future scientific inquiry. Ph.D. 2024-04-17T21:11:44Z 2024-04-17T21:11:44Z 2023-06 2023-09-05T20:08:58.102Z Thesis https://hdl.handle.net/1721.1/154208 https://orcid.org/0000-0003-2994-6134 In Copyright - Educational Use Permitted Copyright MIT http://rightsstatements.org/page/InC-EDU/1.0/ application/pdf Massachusetts Institute of Technology |
| spellingShingle | Kaplan, Alexander E.K. Coherence, Dephasing, and Quantum Interference in Colloidal Perovskite Nanocrystals |
| title | Coherence, Dephasing, and Quantum Interference in Colloidal Perovskite Nanocrystals |
| title_full | Coherence, Dephasing, and Quantum Interference in Colloidal Perovskite Nanocrystals |
| title_fullStr | Coherence, Dephasing, and Quantum Interference in Colloidal Perovskite Nanocrystals |
| title_full_unstemmed | Coherence, Dephasing, and Quantum Interference in Colloidal Perovskite Nanocrystals |
| title_short | Coherence, Dephasing, and Quantum Interference in Colloidal Perovskite Nanocrystals |
| title_sort | coherence dephasing and quantum interference in colloidal perovskite nanocrystals |
| url | https://hdl.handle.net/1721.1/154208 https://orcid.org/0000-0003-2994-6134 |
| work_keys_str_mv | AT kaplanalexanderek coherencedephasingandquantuminterferenceincolloidalperovskitenanocrystals |