Floquet Networks Achieve Near-Perfect Transport Despite Disorder

Researchers at the Physikalisches Institut at Albert-Ludwigs-Universität Freiburg in Germany propose a mechanism for fast and efficient quantum transport within a network deliberately designed with disorder, a feat previously considered improbable given that disorder typically impedes the movement of quantum states. The work, inspired by the remarkably efficient energy transfer found in photosynthetic complexes, details design principles that allow for close-to-perfect transport. These principles center on achieving reflection symmetry in Floquet-Hilbert space and maintaining a dominant doublet or triplet of Floquet states. This mechanism relies on an interplay between inter-site couplings and driving by external vibrations, enabling efficient transfer even with variable on-site energies, and correspondence regarding the research can be directed to abu@uni-freiburg.de.…