The Physics around Quantum Teleportation Set for a Breakthrough

Our understanding of Quantum entanglement and teleportation continues to make little breakthroughs all the time.

Hello Everyone,

At the Quantum Foundry (archives), there are times when I seek to try to learn something a bit off the beaten track. If there ever comes a time when Quantum computing is a bit more mainstream, I’d really want to do more than startup deep dives, products, partnerships but and also more educational pieces.

In a nutshell, Quantum Teleportation: is a technique for transferring quantum information from a sender at one location to a receiver some distance away. China has been especially interested in this concept.

As China becomes more interested in Space technology, their Quantum teleportation, simulation and sensing technologies truly do become world class and useful in ways we as a species are only starting to fully discover in the 2020s.

Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lami from the University of Amsterdam have shown, through probabilistic calculations, that there is indeed, as had been hypothesized, a rule of entropy for the phenomenon of quantum entanglement. Our understanding of Quantum Entanglement continues to evolve.

Quantum Entanglement is a physical phenomenon that occurs when, in two or more particles, the quantum state of each particle cannot be described independently of the state of the others, including even when the particles are separated by a large distance.

Quantum teleportation usually relies on perfectly connected pairs of particles (entangled qubits), but it’s easily messed up by decoherence, which disrupts those connections.

Teleportation in Noisy Environments

Researchers at the University of Turku, Finland, and the University of Science and Technology of China, Hefei, have proposed a unique solution to overcome this problem. The novel method allows for high-quality teleportation to occur even in noisy environments.

“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 at the University of Turku, in a statement.

The details of the team’s research were published in the journal Science Advances.

So this is a bit counter-intuitive. The teleportation protocol traditionally fails in the face of noise with typical qubit entanglement and in the scenario where hybrid entanglement and silence are present at first.

“However, when we have hybrid entanglement and add noise, the teleportation, and quantum state transfer occur in an almost perfect manner”, said Olli Siltanen, whose doctoral dissertation presented the theoretical part of the current research. See the LinkedIn post here.

A Milestone in Quantum Protocol