Teleportation between distant qudits via scattering of mobile qubits

TL;DR

This paper demonstrates a protocol for teleporting quantum states between distant spin-$s$ centers in a 1D structure using unpolarized flying qubits and scattering, without manipulating internal states.

Contribution

It introduces a scattering-based teleportation scheme for spin-$s$ particles in 1D nanostructures that requires minimal control over internal states.

Findings

Teleportation achieved via unpolarized flying qubits and path detection.

No internal state manipulation of spin-$s$ particles or flying qubits needed.

Protocol enables quantum information transfer with low control in nanostructures.

Abstract

We consider a one-dimensional (1D) structure where non-interacting spin-$s$ scattering centers, such as quantum impurities or multi-level atoms, are embedded at given positions. We show that the injection into the structure of unpolarized flying qubits, such as electrons or photons, along with {path} detection suffice to accomplish spin-state teleportation between two centers via a third ancillary one. {No action over the internal quantum state of both the spin-$s$ particles and the flying qubits is required. The protocol enables the transfer of quantum information between well-seperated static entities in nanostructures by exploiting a very low-control mechanism, namely scattering.