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Quantum teleportation using a light-emitting diode
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DOI：10.1038/NPHOTON.2013.10.png)
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Teleportation of optical qubits can enable reliable logic operations in massively parallel quantum computers, as well as the formation of secure quantum networks. Photon teleportation has previously used laser-generated entangled photons created in random quantities. However, the practical complexities of the generating scheme coupled with errors caused by multipair emission have complicated its deployment in useful quantum information technology. Here, we demonstrate teleportation of single photonic qubits, mediated by individual pairs of entangled photons generated by an electrically driven entangled light source realized by embedding a single semiconductor quantum dot within a light-emitting diode. Teleportation is achieved with six general input states, with asymmetrically distributed fidelities, and an average fidelity above the limit possible with classical light. A theoretical framework is created that reproduces our experiments with close agreement. The unique sub-Poissonian nature of our photonic teleporter together with its electrical operation will help lift the complexity restriction of future quantum information applications.
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PHOTONS
STATE
SCHEME
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