Superconductor modulation circuits for Qubit control at microwave frequencies

Autor:	Razmkhah, Sasan, Bozbey, Ali, Febvre, Pascal
Rok vydání:	2022
Předmět:	Quantum Physics Condensed Matter - Superconductivity Physics - Applied Physics B.7
Druh dokumentu:	Working Paper
Popis:	Readout and control of qubits are limiting factors in scaling quantum computers. An ideal solution is to integrate energy-efficient cryogenic circuits close to the qubits to perform control and pre-processing tasks. With orders of magnitude lower power consumption and hence lower noise, Single Flux Quantum (SFQ) and Adiabatic Quantum Flux Parametron (AQFP) superconductor logic families can reach ultimate performance at cryogenic temperatures. We have created a superconductor-based on-chip function generator to control qubits. The generated signal is modulated up to tens of GHz based on the external input waveform applied to the superconductor mixer stage. This circuit works at 4.2K. A radiofrequency (RF) matching circuit transmits the signal to the ~mK stage after digital amplification and noise reduction. Comment: Presented at the Applied Superconductivity Conference (ASC 2022), Honolulu, 24-28 October 2022. 6 pages, 10 figures, 41 references
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2211.06667 Zobrazit plný text záznamu View this record from Arxiv