Hyperinductance based on stacked Josephson junctions
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866913820713156608 |
|---|---|
| author | Manset, Paul Palomo, José Schmitt, Aurélien Gerashchenko, Kyrylo Rousseau, Rémi Patange, Himanshu Abgrall, Patrick Flurin, Emmanuel Deléglise, Samuel Jacqmin, Thibaut Balembois, Léo |
| author_facet | Manset, Paul Palomo, José Schmitt, Aurélien Gerashchenko, Kyrylo Rousseau, Rémi Patange, Himanshu Abgrall, Patrick Flurin, Emmanuel Deléglise, Samuel Jacqmin, Thibaut Balembois, Léo |
| contents | Superinductances are superconducting circuit elements that combine a large inductance with a low parasitic capacitance to ground, resulting in a characteristic impedance exceeding the resistance quantum $R_Q = h/(2e)^2 \simeq 6.45 \mathrm{k}Ω$. In recent years, these components have become key enablers for emerging quantum circuit architectures. However, achieving high characteristic impedance while maintaining scalability and fabrication robustness remains a major challenge. In this work, we present two fabrication techniques for realizing superinductances based on vertically stacked Josephson junctions. Using a multi-angle Manhattan (MAM) process and a zero-angle (ZA) evaporation technique -- in which junction stacks are connected pairwise using airbridges -- we fabricate one-dimensional chains of stacks that act as high-impedance superconducting transmission lines. Two-tone microwave spectroscopy reveals the expected $\sqrt{n}$ scaling of the impedance with the number of junctions per stack. The chain fabricated using the ZA process, with nine junctions per stack, achieves a characteristic impedance of $\sim 16 \mathrm{k}Ω$, a total inductance of $5.9 \mathrm{μH}$, and a maximum frequency-dependent impedance of $50 \mathrm{k}Ω$ at 1.4 GHz. Our results establish junction stacking as a scalable, robust, and flexible platform for next-generation quantum circuits requiring ultra-high impedance environments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_02764 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hyperinductance based on stacked Josephson junctions Manset, Paul Palomo, José Schmitt, Aurélien Gerashchenko, Kyrylo Rousseau, Rémi Patange, Himanshu Abgrall, Patrick Flurin, Emmanuel Deléglise, Samuel Jacqmin, Thibaut Balembois, Léo Quantum Physics Superconductivity Superinductances are superconducting circuit elements that combine a large inductance with a low parasitic capacitance to ground, resulting in a characteristic impedance exceeding the resistance quantum $R_Q = h/(2e)^2 \simeq 6.45 \mathrm{k}Ω$. In recent years, these components have become key enablers for emerging quantum circuit architectures. However, achieving high characteristic impedance while maintaining scalability and fabrication robustness remains a major challenge. In this work, we present two fabrication techniques for realizing superinductances based on vertically stacked Josephson junctions. Using a multi-angle Manhattan (MAM) process and a zero-angle (ZA) evaporation technique -- in which junction stacks are connected pairwise using airbridges -- we fabricate one-dimensional chains of stacks that act as high-impedance superconducting transmission lines. Two-tone microwave spectroscopy reveals the expected $\sqrt{n}$ scaling of the impedance with the number of junctions per stack. The chain fabricated using the ZA process, with nine junctions per stack, achieves a characteristic impedance of $\sim 16 \mathrm{k}Ω$, a total inductance of $5.9 \mathrm{μH}$, and a maximum frequency-dependent impedance of $50 \mathrm{k}Ω$ at 1.4 GHz. Our results establish junction stacking as a scalable, robust, and flexible platform for next-generation quantum circuits requiring ultra-high impedance environments. |
| title | Hyperinductance based on stacked Josephson junctions |
| topic | Quantum Physics Superconductivity |
| url | https://arxiv.org/abs/2505.02764 |