Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency
This thesis focusses on the development of the experimental system used to study the eff ect of Rydberg blockade interactions in clouds of ultracold atoms and quantum degenerate gases. Initial measurements have been performed quantifying these interactions, like the Rydberg blockade radius and its v...
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| Natura: | Tesi |
| Lingua: | English |
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2013
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| Accesso online: | https://hdl.handle.net/10356/51126 |
| _version_ | 1826127529574924288 |
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| author | Mohan, Anushyam |
| author2 | Rainer H. Dumke |
| author_facet | Rainer H. Dumke Mohan, Anushyam |
| author_sort | Mohan, Anushyam |
| collection | NTU |
| description | This thesis focusses on the development of the experimental system used to study the eff ect of Rydberg blockade interactions in clouds of ultracold atoms and quantum degenerate gases. Initial measurements have been performed quantifying these interactions, like the Rydberg blockade radius and its variation with the density of sample, which can be very useful in devising eff cient systems for quantum information processing in quantum gates and/or as probes for detecting impurities in a sample as has been recently proposed [1]. The e ffects of the Rydberg atom interactions are probed via electromagnetically-induced transparency (EIT). The experimental system and apparatus required for the production and detection of ultracold atoms and quantum degenerate gases is developed. Furthermore, the laser systems used for the production of Rydberg atoms via the two-photon transitions are also described. To highlight the density dependent eff ects of the Rydberg atom interactions and the unique advantages o ered to us by the Rydberg blockade eff ect, we compare the EIT experiments performed on a Λ-system using Raman lasers and the experiments performed with a ladder system involving the ground state, the fi rst excited state and a Rydberg state of Rb-87. The manifestation of the blockade eff ect with atom number density, with temperature of the atoms and with the principal quantum number of the Rydberg state to which the atoms are excited, is discussed. The usefulness of the Rydberg blockade interaction as a phenomenon to be exploited in quantum information processing and an outline of the future directions of our experiments concludes the thesis. |
| first_indexed | 2024-10-01T07:10:24Z |
| format | Thesis |
| id | ntu-10356/51126 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:10:24Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/511262023-02-28T23:52:57Z Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency Mohan, Anushyam Rainer H. Dumke School of Physical and Mathematical Sciences DRNTU::Science::Physics::Atomic physics::Quantum theory This thesis focusses on the development of the experimental system used to study the eff ect of Rydberg blockade interactions in clouds of ultracold atoms and quantum degenerate gases. Initial measurements have been performed quantifying these interactions, like the Rydberg blockade radius and its variation with the density of sample, which can be very useful in devising eff cient systems for quantum information processing in quantum gates and/or as probes for detecting impurities in a sample as has been recently proposed [1]. The e ffects of the Rydberg atom interactions are probed via electromagnetically-induced transparency (EIT). The experimental system and apparatus required for the production and detection of ultracold atoms and quantum degenerate gases is developed. Furthermore, the laser systems used for the production of Rydberg atoms via the two-photon transitions are also described. To highlight the density dependent eff ects of the Rydberg atom interactions and the unique advantages o ered to us by the Rydberg blockade eff ect, we compare the EIT experiments performed on a Λ-system using Raman lasers and the experiments performed with a ladder system involving the ground state, the fi rst excited state and a Rydberg state of Rb-87. The manifestation of the blockade eff ect with atom number density, with temperature of the atoms and with the principal quantum number of the Rydberg state to which the atoms are excited, is discussed. The usefulness of the Rydberg blockade interaction as a phenomenon to be exploited in quantum information processing and an outline of the future directions of our experiments concludes the thesis. DOCTOR OF PHILOSOPHY (SPMS) 2013-01-28T07:47:34Z 2013-01-28T07:47:34Z 2013 2013 Thesis Mohan, A. (2013). Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/51126 10.32657/10356/51126 en 156 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics::Atomic physics::Quantum theory Mohan, Anushyam Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency |
| title | Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency |
| title_full | Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency |
| title_fullStr | Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency |
| title_full_unstemmed | Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency |
| title_short | Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency |
| title_sort | investigation of the van der waals interactions in a bose einstein condensate via electromagnetically induced transparency |
| topic | DRNTU::Science::Physics::Atomic physics::Quantum theory |
| url | https://hdl.handle.net/10356/51126 |
| work_keys_str_mv | AT mohananushyam investigationofthevanderwaalsinteractionsinaboseeinsteincondensateviaelectromagneticallyinducedtransparency |