Teleportation between distant qudits via scattering of mobile qubits
arXiv:0910.2390 · doi:10.1103/PhysRevA.81.042318
Abstract
We consider a one-dimensional (1D) structure where non-interacting spin- 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- 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.
8 pages, 5 figures
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- Recurrence in resonant transmission of one-dimensional array of delta potentials
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