Protecting the Quantum Interference of Cat States by Phase-Space Compression
Xiaozhou Pan, Jonathan Schwinger, Ni-Ni Huang, Pengtao Song, Weipin Chua, Fumiya Hanamura, Atharv Joshi, Fernando Valadares, Radim Filip, Yvonne Y. Gao · Physical Review X · 2023
Compressing the spectral content of quantum interference features in Schr\"odinger cat states to lower frequencies protects them against photon loss and preserves the most valuable characteristics that enable many quantum technologies.