Bibliographic Details
| Title: |
Low crosstalk modular flip-chip architecture for coupled superconducting qubits |
| Authors: |
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. |
| Publication Year: |
2025 |
| Collection: |
Quantum Physics |
| Subject Terms: |
Quantum Physics |
| More Details: |
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. |
| Document Type: |
Working Paper |
| Access URL: |
http://arxiv.org/abs/2502.19927 |
| Accession Number: |
edsarx.2502.19927 |
| Database: |
arXiv |
