Long-Range Bell States from Local Measurements and Many-Body Teleportation without Time Reversal. Academic Article uri icon

abstract

  • 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.

published proceedings

  • Phys Rev Lett

altmetric score

  • 0.75

author list (cited authors)

  • Agarwal, L., Langlett, C. M., & Xu, S.

citation count

  • 1

complete list of authors

  • Agarwal, Lakshya||Langlett, Christopher M||Xu, Shenglong

publication date

  • January 2023