Coherence Limits in Interference-Based cos(2$\ddot{I}†$) Qubits

S. Messelot, A. Leblanc, J. -S. Tettekpoe +4

We investigate the coherence properties of parity-protected $\cos (2\ddot{I}†)$ qubits based on interferences between two Josephson elements in a superconducting loop. We show that qubit i…