Researchers achieve near-perfect quantum teleportation despite disruptive noise, marking a significant breakthrough in quantum communication.
In many quantum technologies, two things work against each other: quantum entanglement and decoherence. Imagine they’re like opposing forces.
“The work is based on an idea of distributing entanglement — before running the teleportation protocol — beyond the used qubits, i.e., exploiting the hybrid entanglement between different physical degrees of freedom”, said Jyrki Piilo, a professor, can be teleported by moving its state from one place to another without actually transmitting the particle. Quantum resources, like entanglement between an extra pair of qubits, are needed for this transmission.
“This allows for a significant change in how the noise influences the protocol, and as a matter of fact our discovery reverses the role of the noise from being harmful to being beneficial to teleportation”, saidThe teleportation protocol fails in the face of noise with typical qubit entanglement and in the scenario where hybrid entanglement and silence are present at first.
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