Wavelength-tunable high-fidelity entangled photon sources enabled by dual Stark effects
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2023
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866929428112605184 |
|---|---|
| author | Chen, Chen Yan, Jun-Yong Babin, Hans-Georg Wang, Jiefei Xu, Xingqi Lin, Xing Yu, Qianqian Fang, Wei Liu, Run-Ze Huo, Yong-Heng Cai, Han Sha, Wei E. I. Zhang, Jiaxiang Heyn, Christian Wieck, Andreas D. Ludwig, Arne Wang, Da-Wei Jin, Chao-Yuan Liu, Feng |
| author_facet | Chen, Chen Yan, Jun-Yong Babin, Hans-Georg Wang, Jiefei Xu, Xingqi Lin, Xing Yu, Qianqian Fang, Wei Liu, Run-Ze Huo, Yong-Heng Cai, Han Sha, Wei E. I. Zhang, Jiaxiang Heyn, Christian Wieck, Andreas D. Ludwig, Arne Wang, Da-Wei Jin, Chao-Yuan Liu, Feng |
| contents | The construction of a large-scale quantum internet requires quantum repeaters containing multiple entangled photon sources with identical wavelengths. Semiconductor quantum dots can generate entangled photon pairs deterministically with high fidelity. However, realizing wavelength-matched quantum-dot entangled photon sources faces two difficulties: the non-uniformity of emission wavelength and exciton fine-structure splitting induced fidelity reduction. Typically, these two factors are not independently tunable, making it challenging to achieve simultaneous improvement. In this work, we demonstrate wavelength-tunable entangled photon sources based on droplet-etched GaAs quantum dots through the combined use of AC and quantum-confined Stark effects. The emission wavelength can be tuned by ~1 meV while preserving an entanglement fidelity f exceeding 0.955(1) in the entire tuning range. Based on this hybrid tuning scheme, we finally demonstrate multiple wavelength-matched entangled photon sources with f>0.919(3), paving a way towards robust and scalable on-demand entangled photon sources for quantum internet and integrated quantum optical circuits. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_04744 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Wavelength-tunable high-fidelity entangled photon sources enabled by dual Stark effects Chen, Chen Yan, Jun-Yong Babin, Hans-Georg Wang, Jiefei Xu, Xingqi Lin, Xing Yu, Qianqian Fang, Wei Liu, Run-Ze Huo, Yong-Heng Cai, Han Sha, Wei E. I. Zhang, Jiaxiang Heyn, Christian Wieck, Andreas D. Ludwig, Arne Wang, Da-Wei Jin, Chao-Yuan Liu, Feng Quantum Physics The construction of a large-scale quantum internet requires quantum repeaters containing multiple entangled photon sources with identical wavelengths. Semiconductor quantum dots can generate entangled photon pairs deterministically with high fidelity. However, realizing wavelength-matched quantum-dot entangled photon sources faces two difficulties: the non-uniformity of emission wavelength and exciton fine-structure splitting induced fidelity reduction. Typically, these two factors are not independently tunable, making it challenging to achieve simultaneous improvement. In this work, we demonstrate wavelength-tunable entangled photon sources based on droplet-etched GaAs quantum dots through the combined use of AC and quantum-confined Stark effects. The emission wavelength can be tuned by ~1 meV while preserving an entanglement fidelity f exceeding 0.955(1) in the entire tuning range. Based on this hybrid tuning scheme, we finally demonstrate multiple wavelength-matched entangled photon sources with f>0.919(3), paving a way towards robust and scalable on-demand entangled photon sources for quantum internet and integrated quantum optical circuits. |
| title | Wavelength-tunable high-fidelity entangled photon sources enabled by dual Stark effects |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2308.04744 |