Implementation and Experimental Evaluation of a Cryocooled System Prototype for High-Throughput SFQ Digital Applications
Implementation and Experimental Evaluation of a Cryocooled System Prototype for High-Throughput SFQ Digital Applications
复制标题
高通量 SFQ 数字应用的低温冷却系统原型的实现和实验评估
DOI：
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发表时间：
2007
影响因子：
1.8
通讯作者：
Nobuyuki Yoshikawa
中科院分区：
文献类型：
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作者：
Y. Hashimoto;S. Yorozu;Toshiyuki Miyazaki;Y. Kameda;Hideo Suzuki;Nobuyuki Yoshikawa
我们报道了一种用于高通量单通量量子(SFQ)数字应用的冷冻冷却系统原型的开发。该系统设计为具有32条I/O链路，带宽为10 Gbps/端口。SFQ多芯片模块(MCM)、双金属磁屏蔽、40-K辐射屏蔽、定制的GaAs低温放大器、32针宽带低温探头和32根I/O电缆与两级4-K 1-W Gifford-McMahon(G-M)制冷器一起封装在真空室中。S参数测量表明，I/O链路的模拟带宽为23 GHz。我们演示了测试模块的高速冷冻操作，其中5 mm×5 mm SFQ电路芯片倒装芯片连接在16 mm×16 mm MCM载体上，带有phi30微米INSN凸点键合，比特率高达12.5 Gbps。对于1023-1伪随机比特序列(PRBS)，在10Gbps时，测量的误比特率(BER)小于10-12。
We report on development of a cryocooled system prototype for high-throughput single flux quantum (SFQ) digital applications. The system was designed to have 32 I/O links with a bandwidth of 10 Gbps/port. An SFQ multi-chip module (MCM), double mu-metal magnetic shields, a 40-K radiation shield, customized GaAs cryogenic amplifiers, a 32-pin wide-bandwidth cryo-probe, and 32 I/O cables were packaged in a vacuum chamber together with a two-stage 4-K 1-W Gifford-McMahon (G-M) cryocooler. S-parameter measurements showed that the analog bandwidth of the I/O link was 23 GHz. We demonstrated high-speed cryocooled operation of a test module, in which a 5 mm times 5 mm SFQ circuit chip was flip-chip bonded on a 16 mm times 16 mm MCM carrier with phi30 mum InSn bump bonds, at bit rates up to 12.5 Gbps. Measured bit error rate (BER) was less than 10-12 for a 1023 - 1 pseudorandom bit sequence (PRBS) at 10 Gbps.