Cryogenic operation of NanoBridge at 4 K for controlling qubit

Koichiro Okamoto, Takahisa Tanaka, Makoto Miyamura, Hiroki Ishikuro, Ken Uchida, Toshitsugu Sakamoto, Munehiro Tada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A nonvolatile resistive switching of NanoBridgeTM (NB) at 4 K has been demonstrated for realizing the Quantum-classical interface (QCI), in which the challenging of reset operation at cryogenic temperature is successfully achieved. The set voltage of the NB is increased with decreasing temperature, saturated around 150 K and to be 2.55 V at 4 K. The on-state resistances tuned at 1 k-5 kω show small temperature dependence down to 4 K due to high residual resistivity. The increased reset current of the NB at 4 K is compensated by the process optimization with thermal engineering and the increased I dsat of the select transistor at 4 K, resulting in stable switching. The low-power QCI featuring NBs is a strong candidate for controlling a large number of qubits at cryogenic temperature.

Original languageEnglish
Article numberSC1049
JournalJapanese journal of applied physics
Publication statusPublished - 2022
Externally publishedYes


  • Atom Switch
  • Cryo-CMOS
  • FPGA
  • Non-volatile
  • Quantum computing
  • Qubit

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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