Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth
We report on the delay of optical pulses using electromagnetically induced transparency (EIT) in an ensemble of cold atoms with an optical depth exceeding 500. To identify the regimes in which four-wave mixing (4WM) impacts on EIT behaviour, we conduct the experiment in both ^85 Rb and ^87 Rb. Compa...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/16/11/113053 |
| _version_ | 1797751528169144320 |
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| author | J Geng G T Campbell J Bernu D B Higginbottom B M Sparkes S M Assad W P Zhang N P Robins P K Lam B C Buchler |
| author_facet | J Geng G T Campbell J Bernu D B Higginbottom B M Sparkes S M Assad W P Zhang N P Robins P K Lam B C Buchler |
| author_sort | J Geng |
| collection | DOAJ |
| description | We report on the delay of optical pulses using electromagnetically induced transparency (EIT) in an ensemble of cold atoms with an optical depth exceeding 500. To identify the regimes in which four-wave mixing (4WM) impacts on EIT behaviour, we conduct the experiment in both ^85 Rb and ^87 Rb. Comparison with theory shows excellent agreement in both isotopes. In ^87 Rb negligible 4WM was observed and we obtained one pulse-width of delay with 50% efficiency. In ^85 Rb 4WM contributes to the output. In this regime we achieve a delay-bandwidth product of 3.7 at 50% efficiency, allowing temporally multimode delay, which we demonstrate by compressing two pulses into the memory medium. |
| first_indexed | 2024-03-12T16:49:47Z |
| format | Article |
| id | doaj.art-989a38be8dcb41edbfe129019c47a7f1 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:49:47Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-989a38be8dcb41edbfe129019c47a7f12023-08-08T11:24:35ZengIOP PublishingNew Journal of Physics1367-26302014-01-01161111305310.1088/1367-2630/16/11/113053Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depthJ Geng0G T Campbell1J Bernu2D B Higginbottom3B M Sparkes4S M Assad5W P Zhang6N P Robins7P K Lam8B C Buchler9Department of Physics, State Key Laboratory of Precision Spectroscopy, East China Normal University , Shanghai 200062, Peopleʼs Republic of China; Centre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National University , Canberra, ACT 0200, AustraliaCentre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National University , Canberra, ACT 0200, AustraliaCentre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National University , Canberra, ACT 0200, AustraliaCentre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National University , Canberra, ACT 0200, AustraliaCentre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National University , Canberra, ACT 0200, AustraliaCentre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National University , Canberra, ACT 0200, AustraliaDepartment of Physics, State Key Laboratory of Precision Spectroscopy, East China Normal University , Shanghai 200062, Peopleʼs Republic of ChinaQuantum Sensors Lab, Department of Quantum Science, The Australian National University , Canberra, ACT 0200, AustraliaCentre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National University , Canberra, ACT 0200, Australia; College of Precision Instrument and Opto-electronics Engineering, Key Laboratory of Optoelectronics Information Technology of Ministry of Education, Tianjin University , Tianjin, 300072, Peopleʼs Republic of ChinaCentre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National University , Canberra, ACT 0200, AustraliaWe report on the delay of optical pulses using electromagnetically induced transparency (EIT) in an ensemble of cold atoms with an optical depth exceeding 500. To identify the regimes in which four-wave mixing (4WM) impacts on EIT behaviour, we conduct the experiment in both ^85 Rb and ^87 Rb. Comparison with theory shows excellent agreement in both isotopes. In ^87 Rb negligible 4WM was observed and we obtained one pulse-width of delay with 50% efficiency. In ^85 Rb 4WM contributes to the output. In this regime we achieve a delay-bandwidth product of 3.7 at 50% efficiency, allowing temporally multimode delay, which we demonstrate by compressing two pulses into the memory medium.https://doi.org/10.1088/1367-2630/16/11/113053electromagnetically induced transparencyslow-lightfour-wave-mixing |
| spellingShingle | J Geng G T Campbell J Bernu D B Higginbottom B M Sparkes S M Assad W P Zhang N P Robins P K Lam B C Buchler Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth New Journal of Physics electromagnetically induced transparency slow-light four-wave-mixing |
| title | Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth |
| title_full | Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth |
| title_fullStr | Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth |
| title_full_unstemmed | Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth |
| title_short | Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth |
| title_sort | electromagnetically induced transparency and four wave mixing in a cold atomic ensemble with large optical depth |
| topic | electromagnetically induced transparency slow-light four-wave-mixing |
| url | https://doi.org/10.1088/1367-2630/16/11/113053 |
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