Cryogenic operation of NanoBridge at 4 K for controlling qubit

A nonvolatile resistive switching of NanoBridge TM (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,...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2022-05, Vol.61 (SC), p.SC1049
Main Authors: Okamoto, Koichiro, Tanaka, Takahisa, Miyamura, Makoto, Ishikuro, Hiroki, Uchida, Ken, Sakamoto, Toshitsugu, Tada, Munehiro
Format: Article
Language:English
Subjects:
Atom Switch
Cryo-CMOS
Cryogenic temperature
FPGA
Non-volatile
Optimization
Quantum computing
Qubit
Qubits (quantum computing)
Residual resistivity
Switching
Temperature dependence
Thermal engineering
Transistors
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Summary:A nonvolatile resistive switching of NanoBridge TM (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.
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/ac4303