Details
| Original language | English |
|---|---|
| Article number | 235305 |
| Journal | Physical Review B |
| Volume | 105 |
| Issue number | 23 |
| Publication status | Published - 23 Jun 2022 |
Abstract
Semiconductor quantum dots are promising building blocks for quantum communication applications. Although deterministic, efficient, and coherent emission of entangled photons has been realized, implementing a practical quantum repeater remains outstanding. Here we explore the statistical limits for entanglement swapping with sources of polarization-entangled photons from the commonly used biexciton-exciton cascade. We stress the necessity of tuning the exciton fine structure, and explain why the often observed time evolution of photonic entanglement in quantum dots is not applicable for large quantum networks. We identify the critical, statistically distributed device parameters for entanglement swapping based on two sources. A numerical model for benchmarking the consequences of device fabrication, dynamic tuning techniques, and statistical effects is developed, in order to bring the realization of semiconductor-based quantum networks one step closer to reality.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B, Vol. 105, No. 23, 235305, 23.06.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Statistical limits for entanglement swapping with semiconductor entangled photon sources
AU - Yang, Jingzhong
AU - Zopf, Michael
AU - Li, Pengji
AU - Sharma, Nand Lal
AU - Nie, Weijie
AU - Benthin, Frederik
AU - Fandrich, Tom
AU - Rugeramigabo, Eddy P.
AU - Hopfmann, Caspar
AU - Keil, Robert
AU - Schmidt, Oliver G.
AU - Ding, Fei
N1 - Funding Information: The authors gratefully acknowledge the funding by the German Federal Ministry of Education and Research (BMBF) within the project Q.Link.X (16KIS0869) and QR.X (16KISQ015), the European Research Council (QD-NOMS GA715770), and the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy (EXC-2123) QuantumFrontiers (390837967).
PY - 2022/6/23
Y1 - 2022/6/23
N2 - Semiconductor quantum dots are promising building blocks for quantum communication applications. Although deterministic, efficient, and coherent emission of entangled photons has been realized, implementing a practical quantum repeater remains outstanding. Here we explore the statistical limits for entanglement swapping with sources of polarization-entangled photons from the commonly used biexciton-exciton cascade. We stress the necessity of tuning the exciton fine structure, and explain why the often observed time evolution of photonic entanglement in quantum dots is not applicable for large quantum networks. We identify the critical, statistically distributed device parameters for entanglement swapping based on two sources. A numerical model for benchmarking the consequences of device fabrication, dynamic tuning techniques, and statistical effects is developed, in order to bring the realization of semiconductor-based quantum networks one step closer to reality.
AB - Semiconductor quantum dots are promising building blocks for quantum communication applications. Although deterministic, efficient, and coherent emission of entangled photons has been realized, implementing a practical quantum repeater remains outstanding. Here we explore the statistical limits for entanglement swapping with sources of polarization-entangled photons from the commonly used biexciton-exciton cascade. We stress the necessity of tuning the exciton fine structure, and explain why the often observed time evolution of photonic entanglement in quantum dots is not applicable for large quantum networks. We identify the critical, statistically distributed device parameters for entanglement swapping based on two sources. A numerical model for benchmarking the consequences of device fabrication, dynamic tuning techniques, and statistical effects is developed, in order to bring the realization of semiconductor-based quantum networks one step closer to reality.
UR - http://www.scopus.com/inward/record.url?scp=85133701061&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.105.235305
DO - 10.1103/PhysRevB.105.235305
M3 - Article
VL - 105
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 23
M1 - 235305
ER -