[22a-A306-1~9] 11.4 Analog applications and their related technologies

△ [22a-A306-5] Design of magnetic shields toward operation of a Josephson voltage standard device with strong magnetic field

〇Daiki Matsumaru¹, Shuji Nakamura¹, Michitaka Maruyama¹, Nobu-Hisa Kaneko¹ (1.AIST)

Keywords:Josephson effect, voltage standard, magnetic shield

Voltage standard devices based on the Josephson effect are used as primary standards for DC voltage because they can generate a voltage guaranteed by quantum mechanics. In order to realize a more stable reference voltage source in cryogenic and high magnetic field environments, we are planning to implement a Josephson voltage standard together with a magnetic shield in a dilution refrigerator and to verify its operation. In the presentation, simulation results of the magnetic shielding effect will be presented.