Maximally entangled and gigahertz-clocked on-demand photon pair source
We present a 1 GHz-clocked, maximally entangled and on-demand photon pair source based on droplet etched GaAs quantum dots using two-photon excitation. By employing these GaP microlens-enhanced devices in conjunction with their substantial brightness, raw entanglement fidelities of up to 0.95 +/- 0....
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| Veröffentlicht in: | Physical review. B 2021-02, Vol.103 (7), p.1, Article 075413 |
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| container_issue | 7 |
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| container_title | Physical review. B |
| container_volume | 103 |
| creator | Hopfmann, Caspar Nie, Weijie Sharma, Nand Lal Weigelt, Carmen Ding, Fei Schmidt, Oliver G. |
| description | We present a 1 GHz-clocked, maximally entangled and on-demand photon pair source based on droplet etched GaAs quantum dots using two-photon excitation. By employing these GaP microlens-enhanced devices in conjunction with their substantial brightness, raw entanglement fidelities of up to 0.95 +/- 0.01 and postselected photon indistinguishabilities of up to 0.93 +/- 0.01, the suitability for quantum repeater based long range quantum entanglement distribution schemes is shown. Comprehensive investigations of a complete set of polarization selective two-photon correlations facilitate an innovative method to determine the extraction and excitation efficiencies directly, as opposed to commonly employed indirect techniques. Additionally, time-resolved analysis of Hong-Ou-Mandel interference traces reveal an alternative approach to the investigation of pure photon dephasing. |
| doi_str_mv | 10.1103/PhysRevB.103.075413 |
| format | Article |
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| source | American Physical Society Journals; Web of Science - Science Citation Index Expanded - 2021<img src="https://exlibris-pub.s3.amazonaws.com/fromwos-v2.jpg" /> |
| subjects | Excitation Materials Science Materials Science, Multidisciplinary Microlenses Photons Physical Sciences Physics Physics, Applied Physics, Condensed Matter Quantum dots Quantum entanglement Quantum mechanics Science & Technology Technology |
| title | Maximally entangled and gigahertz-clocked on-demand photon pair source |
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