Solid-state qubits integrated with superconducting through-silicon vias
| Autor: | Yost, Donna-Ruth W., Schwartz, Mollie E., Mallek, Justin, Rosenberg, Danna, Stull, Corey, Yoder, Jonilyn L., Calusine, Greg, Cook, Matt, Das, Rabindra, Day, Alexandra L., Golden, Evan B., Kim, David K., Melville, Alexander, Niedzielski, Bethany M., Woods, Wayne, Kerman, Andrew J., Oliver, Willam D. |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | npj Quantum Information 6, 59 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41534-020-00289-8 |
| Popis: | As superconducting qubit circuits become more complex, addressing a large array of qubits becomes a challenging engineering problem. Dense arrays of qubits benefit from, and may require, access via the third dimension to alleviate interconnect crowding. Through-silicon vias (TSVs) represent a promising approach to three-dimensional (3D) integration in superconducting qubit arrays -- provided they are compact enough to support densely-packed qubit systems without compromising qubit performance or low-loss signal and control routing. In this work, we demonstrate the integration of superconducting, high-aspect ratio TSVs -- 10 $\mu$m wide by 20 $\mu$m long by 200 $\mu$m deep -- with superconducting qubits. We utilize TSVs for baseband control and high-fidelity microwave readout of qubits using a two-chip, bump-bonded architecture. We also validate the fabrication of qubits directly upon the surface of a TSV-integrated chip. These key 3D integration milestones pave the way for the control and readout of high-density superconducting qubit arrays using superconducting TSVs. Comment: 8 pages; 4 figures |
| Databáze: | arXiv |
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