For the first time, researchers have managed to record the quantum teleportation of qutrit - an analogue of a qubit, but with three possible states.
Until now, quantum teleportation has only been achieved for qubits, albeit at impressively large distances. Qutrit is a quantum analogue of trit, a unit of information that can take three values: for example, 0, 1, or 2. Qutrit is notable for the fact that, in addition to these three values, it can be in superposition, that is, it can be simultaneously zero, one and two. …
Quantum teleportation is closely related to quantum entanglement. This phenomenon consists in the fact that the properties of one particle are subordinated to the properties of another. That is, when, for example, the spin of one electron changes, the spin of another particle associated with it changes, even if they are at a great distance from each other.
In the new work, the scientists managed to create a photon-based qutrite using a laser device and barium borate, which is a nonlinear optical crystal and is traditionally used to create quantum coupled photons. As a result, scientists were able to capture the quantum teleportation of kutrit with an accuracy of 75 percent.
According to the authors, teleportation plays a key role in quantum relays and networks. Therefore, scientists hope that their technologies will soon find application in commercial development. One of the main uses, according to the researchers, is for Internet networks protected by fundamental laws of physics.
Nikita Shevtsov
