A Superconducting Binary Encoder with Multigate Nanowire Cryotrons.,Nano Letters

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A Superconducting Binary Encoder with Multigate Nanowire Cryotrons.
Nano Letters ( IF 9.6 ) Pub Date : 2020-04-17 , DOI: 10.1021/acs.nanolett.0c00498
Kai Zheng _{1,

2,

3} , Qing-Yuan Zhao _{1,

2} , Hai-Yang-Bo Lu ₁ , Ling-Dong Kong ₁ , Shi Chen ₁ , Hao Hao ₁ , Hui Wang ₁ , Dan-Feng Pan ₁ , Xue-Cou Tu _{1,

2} , La-Bao Zhang _{1,

2} , Xiao-Qing Jia _{1,

2} , Jian Chen _{1,

2} , Lin Kang _{1,

2} , Pei-Heng Wu _{1,

2}

Affiliation

Many classic and quantum devices need to operate at cryogenic temperatures, demanding advanced cryogenic digital electronics for processing the input and output signals on a chip to extend their scalability and performance. Here, we report a superconducting binary encoder with ultralow power dissipation and ultracompact size. We introduce a multigate superconducting nanowire cryotron (nTron) that functions as an 8-input OR gate within a footprint of approximately 0.5 μm2. Four cryotrons compose a 4-bit encoder that has a bias margin of 18.9%, an operation speed greater than 250 MHz, an average switching jitter of 75 ps, and a power dissipation of less than 1 μW. We apply this encoder to read out a superconducting-nanowire single-photon detector array whose pixel location is digitized into a 4-bit binary address. The small size of the nanowire combined with the low power dissipation makes nTrons promising for future monolithic integration.

中文翻译：

具有多栅极纳米线低温电子管的超导二进制编码器。

许多经典和量子设备需要在低温下工作，需要先进的低温数字电子设备来处理芯片上的输入和输出信号，以扩展其可扩展性和性能。在这里，我们报告具有超低功耗和超紧凑尺寸的超导二进制编码器。我们介绍了一种多栅极超导纳米线低温电子管（nTron），其在占地约0.5μm2的面积内用作8输入或门。四个低温电子管组成一个4位编码器，其偏置裕量为18.9％，工作速度大于250 MHz，平均开关抖动为75 ps，功耗小于1μW。我们应用该编码器读取超导纳米线单光子探测器阵列，其像素位置被数字化为4位二进制地址。

更新日期：2020-04-14

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