Scientists have successfully completed teleportation of a qutrit which is a piece of quantum information based on three states and this has opened a whole new host of opportunities and possibilities for quantum computing and communication sector.
Until now, Qubits were used for quantum transportation for long distances, however, a new proof of concept study has shown that future quantum networks will be able to carry much more data with lesser interference that was being thought. Bits in classical computing can be in two states, either 1 or 0. However, in quantum computing, there is qubit which can be both 0 or 1 at the same time called superposition. Qutrit has a similar relation to a trit, adding superposition to the classical examples, that are represented as 0,1 or 2. A qutrit can be all of these at one single time, which makes a huge leap in terms of computer processing power or the amount of information that can be sent at once. It adds another level of complexity for quantum computing researchers.
Quantum teleportation is simply getting the quantum information from one place to the other through a process called quantum entanglement. It is a case when two quantum particles are interlinked and one reveals the properties of the other, no matter how far apart they might be present. The quantum information can be beamed via photons of light that might be used in the future to create an unhackable internet network which will be protected by fundamental laws of physics.
By splitting the path of a photon into 3 parts close to each other in a careful manner with lasers, beam splitters and barium crystals, researchers were able to create qutrit and generate entanglement.
The system produced a fidelity of 0.75 over a measurement of 12 states which is an accurate result. The setup remained slow and inefficient but has shown that quantum teleportation is possible. Daniel Garisto reports in Scientific American, that another group of scientists have recorded teleportation across 10 states but their work has not yet been accepted by a peer-reviewed journal. They would also upgrade their systems in the future maybe even to the heights of ququarts.
Researchers mentioned that their work provides a complete toolbox for teleporting a particle in an intact manner by combining previous methods of teleportation of two-particle systems and multiple degrees of freedom. The scientists expect their results will pave way for quantum technology applications in higher dimensions since teleportation plays a central role in quantum networks and repeaters.
Journal Reference: arxiv