A Josephson SFQ (single flux quantum) shift register circuit operating under a two-phase power was designed and tested. The test cell was fabricated using the Nb/AlO/sub x//Nb junction SNEAP process. The main data latch is DC biased; the data storage is accomplished by the transfer of a single flux quantum in or out of a SQUID (superconducting quantum interference device) superconducting loop. A two-phase sinusoidal clock with offset is used to operate the circuit. Simulations verify that the operating frequency can go beyond 70 GHz, with operating margins exceeding 20%. Preliminary measurements indicate that the circuit operates as intended.
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机译：设计并测试了在两相功率下工作的约瑟夫森SFQ（单通量量子）移位寄存器电路。测试电池是使用Nb / AlO / sub x // Nb结SNEAP工艺制造的。主数据锁存器是直流偏置的；通过在SQUID（超导量子干涉装置）超导回路中进出单个通量量子来完成数据存储。具有偏移的两相正弦时钟用于操作电路。仿真证明，工作频率可以超过70 GHz，工作裕度超过20％。初步测量表明该电路按预期工作。
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