Sub-Poissonian photon emission in coupled double quantum dots-cavity system
In this work, we theoretically analyze the few-photon emissions generated in a coupled double quantum dots （CDQDs）-single mode microcavity system, under continuous wave and pulse excitation. Compared with the uncoupled case, strong sub-Poissonian character is achieved in a CDQDs--cavity system at a...
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| Published in | Chinese physics B Vol. 24; no. 11; pp. 260 - 265 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.11.2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 1741-4199 |
| DOI | 10.1088/1674-1056/24/11/114202 |
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| Abstract | In this work, we theoretically analyze the few-photon emissions generated in a coupled double quantum dots （CDQDs）-single mode microcavity system, under continuous wave and pulse excitation. Compared with the uncoupled case, strong sub-Poissonian character is achieved in a CDQDs--cavity system at a certain laser frequency. Based on the pro- posed scheme, single photon generation can be obtained separately under QD-cavity resonant condition and off-resonant condition. For different cavity decay rates, we reveal that laser frequency detunings of minimum second-order autocorre- lation function are discrete and can be divided into three regions. Moreover, the non-ideal situation where two QDs are not identical is discussed, indicating the robustness of the proposed scheme, which possesses sub-Poissonian character in a large QD difference variation range. |
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| AbstractList | In this work, we theoretically analyze the few-photon emissions generated in a coupled double quantum dots （CDQDs）-single mode microcavity system, under continuous wave and pulse excitation. Compared with the uncoupled case, strong sub-Poissonian character is achieved in a CDQDs--cavity system at a certain laser frequency. Based on the pro- posed scheme, single photon generation can be obtained separately under QD-cavity resonant condition and off-resonant condition. For different cavity decay rates, we reveal that laser frequency detunings of minimum second-order autocorre- lation function are discrete and can be divided into three regions. Moreover, the non-ideal situation where two QDs are not identical is discussed, indicating the robustness of the proposed scheme, which possesses sub-Poissonian character in a large QD difference variation range. In this work, we theoretically analyze the few-photon emissions generated in a coupled double quantum dots (CDQDs)-single mode microcavity system, under continuous wave and pulse excitation. Compared with the uncoupled case, strong sub-Poissonian character is achieved in a CDQDs-cavity system at a certain laser frequency. Based on the proposed scheme, single photon generation can be obtained separately under QD-cavity resonant condition and off-resonant condition. For different cavity decay rates, we reveal that laser frequency detunings of minimum second-order autocorrelation function are discrete and can be divided into three regions. Moreover, the non-ideal situation where two QDs are not identical is discussed, indicating the robustness of the proposed scheme, which possesses sub-Poissonian character in a large QD difference variation range. |
| Author | 叶寒 彭益炜 俞重远 张文 刘玉敏 |
| AuthorAffiliation | State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Cites_doi | 10.1093/acprof:oso/9780198508861.001.0001 10.1103/PhysRevLett.108.046807 10.1063/1.2802295 10.1103/PhysRevLett.108.183601 10.1038/nature01974 10.1103/PhysRevB.84.195315 10.1103/PhysRevLett.113.036801 10.1103/PhysRevB.89.035316 10.1103/PhysRevA.90.023846 10.1038/nature05586 10.1103/PhysRevB.88.195307 10.1017/CBO9780511813993 10.1103/PhysRevB.84.045310 10.1103/PhysRevB.86.205315 10.1103/PhysRevB.79.035316 10.1038/nnano.2013.146 10.1103/PhysRevA.2.883 10.1103/PhysRevB.87.125423 10.1088/1464-4266/1/4/312 10.1103/PhysRevB.82.075305 10.1103/PhysRevA.89.043838 10.1016/j.optcom.2014.03.038 10.1103/PhysRevLett.107.146801 10.1103/PhysRevB.65.205329 10.1103/PhysRevB.87.245313 10.1007/BF01608499 10.1103/PhysRevA.85.041801 |
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| DocumentTitleAlternate | Sub-Poissonian photon emission in coupled double quantum dots-cavity system |
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| Notes | sub-Poissonian statistics, quantum dots, microcavity, single photon 11-5639/O4 In this work, we theoretically analyze the few-photon emissions generated in a coupled double quantum dots （CDQDs）-single mode microcavity system, under continuous wave and pulse excitation. Compared with the uncoupled case, strong sub-Poissonian character is achieved in a CDQDs--cavity system at a certain laser frequency. Based on the pro- posed scheme, single photon generation can be obtained separately under QD-cavity resonant condition and off-resonant condition. For different cavity decay rates, we reveal that laser frequency detunings of minimum second-order autocorre- lation function are discrete and can be divided into three regions. Moreover, the non-ideal situation where two QDs are not identical is discussed, indicating the robustness of the proposed scheme, which possesses sub-Poissonian character in a large QD difference variation range. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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| References | 22 23 24 25 27 28 29 10 11 12 13 14 15 16 17 Peng Y W (20) 2014; 23 18 19 1 2 3 4 5 Tan S (26) 1999; 1 6 7 8 9 21 |
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| SubjectTerms | Autocorrelation functions Holes Joining Lasers Microcavities Photon emission Quantum dots Robustness 亚泊松特性 共振条件 单光子 激光频率 系统 耦合双量子点 脉冲激励 谐振条件 |
| Title | Sub-Poissonian photon emission in coupled double quantum dots-cavity system |
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