Quantized current steps due to the a.c. coherent quantum phase-slip effect

Rais S. Shaikhaidarov, Kyung Ho Kim, Jacob W. Dunstan, Ilya V. Antonov, Sven Linzen, Mario Ziegler, Dmitry S. Golubev, Vladimir N. Antonov, Evgeni V. Il’ichev, Oleg V. Astafiev^*

^*Corresponding author for this work