H. Fuketa, I. Akita, T. Ishikawa, H. Koike, T. Mori
{"title":"一种用于自旋量子位读出的低温CMOS电流比较器,实现快速读出时间和高电流分辨率","authors":"H. Fuketa, I. Akita, T. Ishikawa, H. Koike, T. Mori","doi":"10.1109/vlsitechnologyandcir46769.2022.9830225","DOIUrl":null,"url":null,"abstract":"Employing a precise current readout circuit enabled by a current integrator and correlation double sampling circuit, we propose a cryo-CMOS current comparator circuit to readout spin qubit states by a charge sensing scheme. The reduced readout time by a factor of 1/100 and 100-times better current resolution with the readout fidelity of 99.9% compared to the conventional readout systems are achieved. Furthermore, the proposed current comparator attains the best figure-of-merit (FoM) among the conventional cryogenic current readout circuits. This is the demonstration that cryo-CMOS technology can enhance the performance of quantum computer systems.","PeriodicalId":332454,"journal":{"name":"2022 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Cryogenic CMOS Current Comparator for Spin Qubit Readout Achieving Fast Readout Time and High Current Resolution\",\"authors\":\"H. Fuketa, I. Akita, T. Ishikawa, H. Koike, T. Mori\",\"doi\":\"10.1109/vlsitechnologyandcir46769.2022.9830225\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Employing a precise current readout circuit enabled by a current integrator and correlation double sampling circuit, we propose a cryo-CMOS current comparator circuit to readout spin qubit states by a charge sensing scheme. The reduced readout time by a factor of 1/100 and 100-times better current resolution with the readout fidelity of 99.9% compared to the conventional readout systems are achieved. Furthermore, the proposed current comparator attains the best figure-of-merit (FoM) among the conventional cryogenic current readout circuits. This is the demonstration that cryo-CMOS technology can enhance the performance of quantum computer systems.\",\"PeriodicalId\":332454,\"journal\":{\"name\":\"2022 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-06-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2022 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/vlsitechnologyandcir46769.2022.9830225\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/vlsitechnologyandcir46769.2022.9830225","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A Cryogenic CMOS Current Comparator for Spin Qubit Readout Achieving Fast Readout Time and High Current Resolution
Employing a precise current readout circuit enabled by a current integrator and correlation double sampling circuit, we propose a cryo-CMOS current comparator circuit to readout spin qubit states by a charge sensing scheme. The reduced readout time by a factor of 1/100 and 100-times better current resolution with the readout fidelity of 99.9% compared to the conventional readout systems are achieved. Furthermore, the proposed current comparator attains the best figure-of-merit (FoM) among the conventional cryogenic current readout circuits. This is the demonstration that cryo-CMOS technology can enhance the performance of quantum computer systems.