Suppression of tunneling in a superconducting persistent-current qubit
Rakesh P. Tiwari, D. Stroud
DOI 10.1103/PhysRevB.76.220505 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We consider a superconducting persistent-current qubit consisting of a three-junction superconducting loop in an applied magnetic field. We show that by choosing the field, Josephson couplings, and offset charges suitably, we can perfectly suppress the tunneling between the two oppositely directed states of circulating current, leading to a vanishing of the splitting between the two qubit states. This suppression arises from interference between tunneling along different paths and is analogous to that predicted previously for magnetic particles with half-integer spin.
Similar papers
Tuning of Magnetic Activity in Spin-Filter Josephson Junctions Towards Spin-Triplet Transport
similarity 0.89R. Caruso et al.
Source status unknown — claims are unverified
Fractional spin Josephson effect in topological spin superconductors
similarity 0.88Liang Du et al.
Source status unknown — claims are unverified
Suppression of superconductivity by spin fluctuations in iron-based superconductors
similarity 0.88Hiroyuki Yamase & Tomoaki Agatsuma
Source status unknown — claims are unverified
Switch effect and - transition in Ising superconductor Josephson junctions
similarity 0.87Qiang Cheng & Qing-Feng Sun · 2020 · arXiv:2001.06811
Source status unknown — claims are unverified
Efficient two-qutrit gates in superconducting circuits using parametric coupling
similarity 0.87Mahadevan Subramanian & Adrian Lupascu
Source status unknown — claims are unverified
Magnetic interference pattern in planar SNS Josephson junctions
similarity 0.87G. Mohammadkhani et al.
Source status unknown — claims are unverified