Enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlattices
Cooperative emission of coherent radiation from multiple emitters (known as superradiance) has been predicted and observed in various physical systems, most recently in CsPbBr_{3} nanocrystal superlattices. Superradiant emission is coherent and occurs on timescales faster than the emission from isol...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2023-04-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.023068 |
| _version_ | 1797210531994533888 |
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| author | Sushrut Ghonge David Engel Francesco Mattiotti G. Luca Celardo Masaru Kuno Boldizsár Jankó |
| author_facet | Sushrut Ghonge David Engel Francesco Mattiotti G. Luca Celardo Masaru Kuno Boldizsár Jankó |
| author_sort | Sushrut Ghonge |
| collection | DOAJ |
| description | Cooperative emission of coherent radiation from multiple emitters (known as superradiance) has been predicted and observed in various physical systems, most recently in CsPbBr_{3} nanocrystal superlattices. Superradiant emission is coherent and occurs on timescales faster than the emission from isolated nanocrystals. Theory predicts cooperative emission being faster by a factor of up to the number of nanocrystals (N). However, superradiance is strongly suppressed due to the presence of energetic disorder, stemming from nanocrystal size variations and thermal decoherence. Here, we analyze superradiance from superlattices of different dimensionalities (one-, two-, and three-dimensional) with variable nanocrystal aspect ratios. We predict as much as a 15-fold enhancement in robustness against realistic values of energetic disorder in three-dimensional (3D) superlattices composed of cuboid-shaped, as opposed to cube-shaped, nanocrystals. Superradiance from small (N≲10^{3}) two-dimensional (2D) superlattices is up to ten times more robust to static disorder and up to twice as robust to thermal decoherence than 3D superlattices with the same N. As the number of N increases, a crossover in the robustness of superradiance occurs from 2D to 3D superlattices. For large N(>10^{3}), the robustness in 3D superlattices increases with N, showing cooperative robustness to disorder. This opens the possibility of observing superradiance even at room temperature in large 3D superlattices, if nanocrystal size fluctuations can be kept small. |
| first_indexed | 2024-04-24T10:12:05Z |
| format | Article |
| id | doaj.art-b775200fc1e94eae812be1971e6d4468 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:12:05Z |
| publishDate | 2023-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-b775200fc1e94eae812be1971e6d44682024-04-12T17:30:31ZengAmerican Physical SocietyPhysical Review Research2643-15642023-04-015202306810.1103/PhysRevResearch.5.023068Enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlatticesSushrut GhongeDavid EngelFrancesco MattiottiG. Luca CelardoMasaru KunoBoldizsár JankóCooperative emission of coherent radiation from multiple emitters (known as superradiance) has been predicted and observed in various physical systems, most recently in CsPbBr_{3} nanocrystal superlattices. Superradiant emission is coherent and occurs on timescales faster than the emission from isolated nanocrystals. Theory predicts cooperative emission being faster by a factor of up to the number of nanocrystals (N). However, superradiance is strongly suppressed due to the presence of energetic disorder, stemming from nanocrystal size variations and thermal decoherence. Here, we analyze superradiance from superlattices of different dimensionalities (one-, two-, and three-dimensional) with variable nanocrystal aspect ratios. We predict as much as a 15-fold enhancement in robustness against realistic values of energetic disorder in three-dimensional (3D) superlattices composed of cuboid-shaped, as opposed to cube-shaped, nanocrystals. Superradiance from small (N≲10^{3}) two-dimensional (2D) superlattices is up to ten times more robust to static disorder and up to twice as robust to thermal decoherence than 3D superlattices with the same N. As the number of N increases, a crossover in the robustness of superradiance occurs from 2D to 3D superlattices. For large N(>10^{3}), the robustness in 3D superlattices increases with N, showing cooperative robustness to disorder. This opens the possibility of observing superradiance even at room temperature in large 3D superlattices, if nanocrystal size fluctuations can be kept small.http://doi.org/10.1103/PhysRevResearch.5.023068 |
| spellingShingle | Sushrut Ghonge David Engel Francesco Mattiotti G. Luca Celardo Masaru Kuno Boldizsár Jankó Enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlattices Physical Review Research |
| title | Enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlattices |
| title_full | Enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlattices |
| title_fullStr | Enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlattices |
| title_full_unstemmed | Enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlattices |
| title_short | Enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlattices |
| title_sort | enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlattices |
| url | http://doi.org/10.1103/PhysRevResearch.5.023068 |
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