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The experiment runs on IBM's ibm_pittsburgh hardware and uses dynamical decoupling to suppress noise, so the reported fidelities (about 0.70 and 0.68 after three teleportation rounds) come from a specific hardware-and-mitigation setup. Those figures exceed the threshold the authors use to claim successful two-channel communication, but they are still well short of what fault-tolerant networks would need. The work is a useful proof of multiplexing with a single five-qubit entangled resource, not evidence of practical quantum networks yet.

Sursă care acoperăQuantum Zeitgeist

Researchers Achieve 0.704 Fidelity in Quantum Parallel Teleportation

Quantum Zeitgeist25 octombrie 20264 min de cititArticolul și perspectiva sunt în engleză.

Entanglement fidelities exceeding 0. 7 after three rounds of parallel quantum teleportation represent a new benchmark in multi-qubit utility. This work demonstrates how a single five-qubit entangled state can sustain simultaneous communications, an essential step towards scalable quantum networks.

A single entangled resource now reliably transmits multiple quantum messages in parallel. For the first time, two-channel entanglement transmission utilizes a five-qubit state on quantum hardware. Classical processing and error mitigation techniques, specifically XY4 dynamical decoupling, achieved final entanglement fidelities of approximately zero point seven zero four and zero point six eight after three rounds of teleportation; these values exceed the threshold needed to confirm successful communication across both channels. Quantum information…

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