CMOS-based cryogenic control of silicon quantum circuits

Xiao Xue, Bishnu Patra, Jeroen P. G. Dijk, Nodar Samkharadze, Sushil Subramanian, Andrea Corna, Brian Paquelet Wuetz, Charles Jeon, Farhana Sheikh, Esdras Juarez-Hernandez, Brando Perez Esparza, Huzaifa Rampurawala, Brent Carlton, Surej Ravikumar, Carlos Nieva, Sungwon Kim, Hyung-Jin Lee, Amir Sammak, Giordano Scappucci, Menno Veldhorst, Fabio Sebastiano, Masoud Babaie, Stefano Pellerano, Edoardo Charbon () and Lieven M. K. Vandersypen ()
Additional contact information
Xiao Xue: QuTech, Delft University of Technology
Bishnu Patra: QuTech, Delft University of Technology
Jeroen P. G. Dijk: QuTech, Delft University of Technology
Nodar Samkharadze: QuTech, Delft University of Technology
Sushil Subramanian: Intel Corporation
Andrea Corna: QuTech, Delft University of Technology
Brian Paquelet Wuetz: QuTech, Delft University of Technology
Charles Jeon: Intel Corporation
Farhana Sheikh: Intel Corporation
Esdras Juarez-Hernandez: Intel Guadalajara
Brando Perez Esparza: Intel Guadalajara
Huzaifa Rampurawala: Intel Corporation
Brent Carlton: Intel Corporation
Surej Ravikumar: Intel Corporation
Carlos Nieva: Intel Corporation
Sungwon Kim: Intel Corporation
Hyung-Jin Lee: Intel Corporation
Amir Sammak: QuTech, Delft University of Technology
Giordano Scappucci: QuTech, Delft University of Technology
Menno Veldhorst: QuTech, Delft University of Technology
Fabio Sebastiano: QuTech, Delft University of Technology
Masoud Babaie: QuTech, Delft University of Technology
Stefano Pellerano: Intel Corporation
Edoardo Charbon: QuTech, Delft University of Technology
Lieven M. K. Vandersypen: QuTech, Delft University of Technology

Nature, 2021, vol. 593, issue 7858, 205-210

Abstract: Abstract The most promising quantum algorithms require quantum processors that host millions of quantum bits when targeting practical applications1. A key challenge towards large-scale quantum computation is the interconnect complexity. In current solid-state qubit implementations, an important interconnect bottleneck appears between the quantum chip in a dilution refrigerator and the room-temperature electronics. Advanced lithography supports the fabrication of both control electronics and qubits in silicon using technology compatible with complementary metal oxide semiconductors (CMOS)2. When the electronics are designed to operate at cryogenic temperatures, they can ultimately be integrated with the qubits on the same die or package, overcoming the ‘wiring bottleneck’3–6. Here we report a cryogenic CMOS control chip operating at 3 kelvin, which outputs tailored microwave bursts to drive silicon quantum bits cooled to 20 millikelvin. We first benchmark the control chip and find an electrical performance consistent with qubit operations of 99.99 per cent fidelity, assuming ideal qubits. Next, we use it to coherently control actual qubits encoded in the spin of single electrons confined in silicon quantum dots7–9 and find that the cryogenic control chip achieves the same fidelity as commercial instruments at room temperature. Furthermore, we demonstrate the capabilities of the control chip by programming a number of benchmarking protocols, as well as the Deutsch–Josza algorithm10, on a two-qubit quantum processor. These results open up the way towards a fully integrated, scalable silicon-based quantum computer.

Date: 2021
References: Add references at CitEc
Citations: View citations in EconPapers (7)

Downloads: (external link)
https://www.nature.com/articles/s41586-021-03469-4 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:593:y:2021:i:7858:d:10.1038_s41586-021-03469-4

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/s41586-021-03469-4

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().