Scientists have successfully conducted near-perfect quantum teleportation despite the presence of noise that typically disrupts the transfer of quantum states.

TURKU, Finland — Beam me up, Scotty! In a study that seems straight out of a “Star Trek” episode, an international team of researchers has achieved a remarkable feat in the realm of quantum teleportation. They have successfully conducted near-perfect quantum teleportation despite the presence of noise that typically disrupts the transfer of quantum states.

Quantum teleportation is a process in which the state of a quantum particle, or qubit, is transferred from one location to another without physically sending the particle itself. This transfer requires quantum resources, such as entanglement between an additional pair of qubits.

  • can@sh.itjust.works
    0·
    6 months ago

    A but more detailed lower:

    The process works as follows: the sender subjects their photon to controlled dephasing, which cancels out the initial correlations. They then perform a joint measurement on their part of the entangled pair and the qubit to be teleported. This measurement not only entangles the sender’s qubits but also remotely transforms the hybrid entanglement into local qubit-environment entanglement on the receiver’s side. Finally, the receiver applies a specific operation based on the sender’s measurement result and subjects their photon to dephasing, which remarkably converts the qubit-environment entanglement into the desired quantum state.