Millions of qubits need to be employed in a quantum computer to achieve a fault-tolerant quantum operation. To reduce the complexity in such a large-scale system, the control and readout circuitries have been proposed to be placed at the 4 K stage of dilution refrigerators [1]. CMOS technology is commonly used to leverage its scaling to enable large integration of control and readout circuitries with qubits. However, the high-fidelity readout operations require low noise amplifiers (LNAs) with a noise temperature of a few Kelvins. This necessitates the usage of HEMT and parametric amplifiers [2]. Recently reported CMOS LNAs are still far away from attaining such good performance [3-5]. Thus, this is one of the greatest challenges on the way to the fully integrated CMOS readout. Additionally, due to the limited cooling power of dilution refrigerators, low-power solutions are needed for achieving a very good noise performance at 4 K. This paper presents a 28 nm CMOS LNA for qubit readout, which achieves an order of magnitude power reduction compared to its CMOS counterparts while still providing a similar good noise Figure (NF) performance at 4 K.
Çaglar, A , Van Winckel, S, Brebels, S , Wambacq, P & Craninckx, J 2021, A 4.2mW 4K 6-8GHz CMOS LNA for Superconducting Qubit Readout . in Proceedings of IEEE Asian Solid-State Circuits Conference (A-SSCC) 2021. Proceedings - A-SSCC 2021: IEEE Asian Solid-State Circuits Conference, IEEE, pp. 1-3, Asian Solid-State Circuit Conference 2021, 7/11/21 .
Çaglar, A. , Van Winckel, S., Brebels, S. , Wambacq, P. , & Craninckx, J. (2021). A 4.2mW 4K 6-8GHz CMOS LNA for Superconducting Qubit Readout . In Proceedings of IEEE Asian Solid-State Circuits Conference (A-SSCC) 2021 (pp. 1-3). (Proceedings - A-SSCC 2021: IEEE Asian Solid-State Circuits Conference). IEEE.
@inproceedings{c045c0107b744630bfafb3435c496932,
title = " A 4.2mW 4K 6-8GHz CMOS LNA for Superconducting Qubit Readout " ,
abstract = " Millions of qubits need to be employed in a quantum computer to achieve a fault-tolerant quantum operation. To reduce the complexity in such a large-scale system, the control and readout circuitries have been proposed to be placed at the 4 K stage of dilution refrigerators [1]. CMOS technology is commonly used to leverage its scaling to enable large integration of control and readout circuitries with qubits. However, the high-fidelity readout operations require low noise amplifiers (LNAs) with a noise temperature of a few Kelvins. This necessitates the usage of HEMT and parametric amplifiers [2]. Recently reported CMOS LNAs are still far away from attaining such good performance [3-5]. Thus, this is one of the greatest challenges on the way to the fully integrated CMOS readout. Additionally, due to the limited cooling power of dilution refrigerators, low-power solutions are needed for achieving a very good noise performance at 4 K. This paper presents a 28 nm CMOS LNA for qubit readout, which achieves an order of magnitude power reduction compared to its CMOS counterparts while still providing a similar good noise Figure (NF) performance at 4 K. " ,
author = " Alican {c C}aglar and {Van Winckel}, Steven and Steven Brebels and Piet Wambacq and Jan Craninckx " ,
year = " 2021 " ,
doi = " 10.1109/A-SSCC53895.2021.9634832 " ,
language = " English " ,
series = " Proceedings - A-SSCC 2021: IEEE Asian Solid-State Circuits Conference " ,
publisher = " IEEE " ,
pages = " 13 " ,
booktitle = " Proceedings of IEEE Asian Solid-State Circuits Conference (A-SSCC) 2021 " ,
note = " Asian Solid-State Circuit Conference 2021 Conference date: 07-11-2021 Through 10-11-2021 " ,
url = " https://www.a-sscc2021.org/ " ,
}