Details

Autor(en) / Beteiligte

• Foster, Reed A.
• Castellani, Matteo
• Buzzi, Alessandro
• Medeiros, Owen
• Colangelo, Marco
• Berggren, Karl K.

Titel

A superconducting nanowire binary shift register

Ist Teil von

• Applied physics letters, 2023-04, Vol.122 (15)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2023

Link zum Volltext

Quelle

美国小型学会期刊集（AIP Scitation平台）

Beschreibungen/Notizen

• We present a design for a superconducting nanowire binary shift register, which stores digital states in the form of circulating supercurrents in high-kinetic-inductance loops. Adjacent superconducting loops are connected with nanocryotrons, three-terminal electrothermal switches, and fed with an alternating two-phase clock to synchronously transfer the digital state between the loops. A two-loop serial-input shift register was fabricated with thin-film NbN and a bit error rate of less than 10−4 was achieved, when operated at a maximum clock frequency of 83   MHz and in an out-of-plane magnetic field of up to 6   mT. A shift register based on this technology offers an integrated solution for low-power readout of superconducting nanowire single photon detector arrays and is capable of interfacing directly with room-temperature electronics and operating unshielded in high magnetic field environments.