Agarwal Lakshya, Langlett Christopher M, Xu Shenglong
Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA.
Phys Rev Lett. 2023 Jan 13;130(2):020801. doi: 10.1103/PhysRevLett.130.020801.
In this Letter, we study quantum many-body teleportation, where a single qubit is teleported through a strongly interacting quantum system, as a result of a scrambling unitary and local measurements on a few qubits. Usual many-body teleportation protocols require a double copy of the system, and backward time evolution, we demonstrate that teleportation is possible in the 2D spin-1/2 XY model, without these constraints. The necessary long-range entanglement for teleportation is generated from the model hosting special eigenstates known as rainbow scars. We outline a specific protocol for preparing this highly entangled state by evolving a product state and performing iterative measurements on only two qubits with feedback control.
