Teleportation of a genuine single-rail vacuum-one-photon qubit generated via a quantum dot source
Beatrice Polacchi, Francesco Hoch, Giovanni Rodari, Stefano Savo,, Gonzalo Carvacho, Nicol\`o Spagnolo, Taira Giordani, Fabio Sciarrino

TL;DR
This paper demonstrates the first successful teleportation of single-rail vacuum-one-photon qubits using a quantum dot source, enabling new quantum information processing capabilities with this encoding.
Contribution
It introduces a method for teleporting vacuum-one-photon qubits in a single mode using a quantum dot, overcoming previous limitations of linear optics.
Findings
Successfully teleported vacuum-one-photon qubits
Performed entanglement swapping with single-rail encoding
Showed potential for quantum information processing with quantum dot sources
Abstract
Quantum state teleportation represents a pillar of quantum information and a milestone on the roadmap towards quantum networks with a large number of nodes. Successful photonic demonstrations of this protocol have been carried out employing different qubit encodings. However, demonstrations in the Fock basis encoding are challenging, due to the impossibility of generating a coherent superposition of vacuum-one photon states on a single mode with linear optics. Indeed, previous realizations only allowed the teleportation of dual-rail entangled states, by exploiting ancillary electromagnetic modes. Here, instead, we enable the quantum teleportation of pure vacuum-one-photon qubits encoded in a single spatial mode, by exploiting coherent control of a resonantly excited semiconductor quantum dot in a micro-cavity. Within our setup, we can both teleport genuine single-rail vacuum-one-photon…
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Taxonomy
TopicsQuantum Information and Cryptography · Neural Networks and Reservoir Computing · Semiconductor Quantum Structures and Devices
