Spatial dynamics of exciton-polariton condensates in inhomogeneous potentials
Exciton-polaritons are hybrid light-matter quasiparticles forming in semiconductor microcavities. By combining the light effective mass of photons with the thermalizing behavior of an electronic system, the particles are able to undergo a form of Bose-Einstein condensation at considerably higher...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2019
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/76437 |
| _version_ | 1811692464012001280 |
|---|---|
| author | Tan, En Zhi |
| author2 | Timothy Liew C. H. |
| author_facet | Timothy Liew C. H. Tan, En Zhi |
| author_sort | Tan, En Zhi |
| collection | NTU |
| description | Exciton-polaritons are hybrid light-matter quasiparticles forming in semiconductor microcavities.
By combining the light effective mass of photons with the thermalizing behavior of
an electronic system, the particles are able to undergo a form of Bose-Einstein condensation
at considerably higher temperature than more traditional condensates of cold-atoms. In
addition, exciton-polaritons can be controlled by changing their potential energy landscape,
which may have both real and imaginary components (imaginary components corresponding
to non-uniform gain and loss). In the first part of the project, the spin-dependent splitting
of whispering gallery modes formed in mesa traps is studied and a theoretical model to explain
the phenomenon based on the optical spin Hall effect is presented. In the second part
of the project, we present a theoretical scheme for the realisation of unidirectional
transmission of
exciton-polariton signals in a spin-dependent micropillar chain and study the dynamics of such
a system. |
| first_indexed | 2024-10-01T06:36:12Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/76437 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:36:12Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/764372023-02-28T23:16:29Z Spatial dynamics of exciton-polariton condensates in inhomogeneous potentials Tan, En Zhi Timothy Liew C. H. School of Physical and Mathematical Sciences Elena Ostrovskaya DRNTU::Science::Physics Exciton-polaritons are hybrid light-matter quasiparticles forming in semiconductor microcavities. By combining the light effective mass of photons with the thermalizing behavior of an electronic system, the particles are able to undergo a form of Bose-Einstein condensation at considerably higher temperature than more traditional condensates of cold-atoms. In addition, exciton-polaritons can be controlled by changing their potential energy landscape, which may have both real and imaginary components (imaginary components corresponding to non-uniform gain and loss). In the first part of the project, the spin-dependent splitting of whispering gallery modes formed in mesa traps is studied and a theoretical model to explain the phenomenon based on the optical spin Hall effect is presented. In the second part of the project, we present a theoretical scheme for the realisation of unidirectional transmission of exciton-polariton signals in a spin-dependent micropillar chain and study the dynamics of such a system. Bachelor of Science in Physics 2019-02-15T07:30:43Z 2019-02-15T07:30:43Z 2018 Final Year Project (FYP) http://hdl.handle.net/10356/76437 en 74 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics Tan, En Zhi Spatial dynamics of exciton-polariton condensates in inhomogeneous potentials |
| title | Spatial dynamics of exciton-polariton condensates in inhomogeneous potentials |
| title_full | Spatial dynamics of exciton-polariton condensates in inhomogeneous potentials |
| title_fullStr | Spatial dynamics of exciton-polariton condensates in inhomogeneous potentials |
| title_full_unstemmed | Spatial dynamics of exciton-polariton condensates in inhomogeneous potentials |
| title_short | Spatial dynamics of exciton-polariton condensates in inhomogeneous potentials |
| title_sort | spatial dynamics of exciton polariton condensates in inhomogeneous potentials |
| topic | DRNTU::Science::Physics |
| url | http://hdl.handle.net/10356/76437 |
| work_keys_str_mv | AT tanenzhi spatialdynamicsofexcitonpolaritoncondensatesininhomogeneouspotentials |