Computational Advantage from the Quantum Superposition of Multiple Temporal Orders of Photonic Gates
Márcio M. Taddei, Jaime Cariñe, Daniel Martínez, Tania García, Nayda Guerrero, Alastair A. Abbott, Mateus Araújo, Cyril Branciard, Esteban S. Gómez, Stephen P. Walborn, Leandro Aolita, Gustavo Lima · PRX Quantum · 2021
Playing with causal orders leads to quadratic speed-up: An efficient algorithm is introduced and implemented in a scalable fiber-optic based experiment that achieves, for the first time, a quantum 4-switch gate.