Breaking the speed limit for perfect quantum state transfer
Weichen Xie, Alastair Kay, Christino Tamon · Physical Review A · 2023
We describe a protocol for perfectly transferring a quantum state from one party to another under the dynamics of a fixed, engineered Hamiltonian. Our protocol combines the concepts of fractional revival, dual-rail encoding, and a rare glimpse of the anti-Zeno effect. Remarkably, this nondeterministic transfer can happen on average faster than the speed limit for perfect quantum state transfer.