Low crosstalk modular flip-chip architecture for coupled superconducting qubits
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866908337110515712 |
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| author | Ihssen, Soeren Geisert, Simon Jauma, Gabriel Winkel, Patrick Spiecker, Martin Zapata, Nicolas Gosling, Nicolas Paluch, Patrick Pino, Manuel Reisinger, Thomas Wernsdorfer, Wolfgang Garcia-Ripoll, Juan Jose Pop, Ioan M. |
| author_facet | Ihssen, Soeren Geisert, Simon Jauma, Gabriel Winkel, Patrick Spiecker, Martin Zapata, Nicolas Gosling, Nicolas Paluch, Patrick Pino, Manuel Reisinger, Thomas Wernsdorfer, Wolfgang Garcia-Ripoll, Juan Jose Pop, Ioan M. |
| contents | We present a flip-chip architecture for an array of coupled superconducting qubits, in which circuit components reside inside individual microwave enclosures. In contrast to other flip-chip approaches, the qubit chips in our architecture are electrically floating, which guarantees a simple, fully modular assembly of capacitively coupled circuit components such as qubit, control, and coupling structures, as well as reduced crosstalk between the components. We validate the concept with a chain of three nearest neighbor coupled generalized flux qubits in which the center qubit acts as a frequency-tunable coupler. Using this coupler, we demonstrate a transverse coupling on/off ratio $\approx$ 50, zz-crosstalk $\approx$ 0.7 kHz between resonant qubits and isolation between the qubit enclosures > 60 dB. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_19927 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Low crosstalk modular flip-chip architecture for coupled superconducting qubits Ihssen, Soeren Geisert, Simon Jauma, Gabriel Winkel, Patrick Spiecker, Martin Zapata, Nicolas Gosling, Nicolas Paluch, Patrick Pino, Manuel Reisinger, Thomas Wernsdorfer, Wolfgang Garcia-Ripoll, Juan Jose Pop, Ioan M. Quantum Physics We present a flip-chip architecture for an array of coupled superconducting qubits, in which circuit components reside inside individual microwave enclosures. In contrast to other flip-chip approaches, the qubit chips in our architecture are electrically floating, which guarantees a simple, fully modular assembly of capacitively coupled circuit components such as qubit, control, and coupling structures, as well as reduced crosstalk between the components. We validate the concept with a chain of three nearest neighbor coupled generalized flux qubits in which the center qubit acts as a frequency-tunable coupler. Using this coupler, we demonstrate a transverse coupling on/off ratio $\approx$ 50, zz-crosstalk $\approx$ 0.7 kHz between resonant qubits and isolation between the qubit enclosures > 60 dB. |
| title | Low crosstalk modular flip-chip architecture for coupled superconducting qubits |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2502.19927 |