Superconducting Cavity Qubit with Tens of Milliseconds Single-Photon Coherence Time
Ofir Milul, Barkay Guttel, Uri Goldblatt, Sergey Hazanov, Lalit Mohan Joshi, Daniel Chausovsky, Nitzan Kahn, Engin Çiftyürek, F. Lafont, Serge Rosenblum · PRX Quantum · 2023
A superconducting cavity qubit with coherence time an order of magnitude larger than the state of the art is demonstrated, showing the storage of a Schr\"odinger cat state with a record size of 1024 photons.