Researchers from Griffith University’s Center for Quantum Dynamics, has highlighted the issues around inherent loss that occurs across every form of communication channel (for example, internet or phone) and discovered a mechanism that can reduce that loss.

Figure 1: A new mechanism that can reduce inherent loss.

Figure 1 shows that the finding is an important step towards implementing ‘quantum internet’, which will bring unprecedented capabilities not accessible with today’s web, said the researcher.

The study was the first to demonstrate an error reduction method that improved the performance of a channel. First, we looked at the raw data transmitted via our channel and could see a better signal with our method, than without it.

In our experiment, we first sent a photon through the loss – this photon is not carrying any useful information so losing it was not a big problem.

We could then correct for the effects of loss via a device called noiseless linear amplifier developed at Griffith and the University of Queensland.

“It can recover the lost quantum state, but it cannot always succeed; sometimes it fails. [1]

It can recover the lost quantum state, but it cannot always succeed; sometimes, it fails. However, once the recovery succeeds, we then use a quantum state teleportation protocol to teleport the information we wanted to transmit into the now corrected carrier, avoiding all the loss on the channel.

Our work implements a so-called quantum relay, a key ingredient of this long-distance communication network. The no-cloning theorem forbids making copies of unknown quantum data, so if a photon that carries information is lost, the information it carries is gone forever. [2]

A working long-distance quantum communication channel needs a mechanism to reduce this information loss, which is exactly what we did in our experiment.

The next step in this study would be to reduce the errors to a level where the team could implement long-distance quantum cryptography, and test the method using real-life optical infrastructure, such as those used for fiber-based internet. [3]

References:

1. https://scitechdaily.com/not-science-fiction-quantum-teleportation-provides-express-lane-for-data-communication/
2. https://www.techexplorist.com/quantum-teleportation-express-lane-quantum-data-traffic/46431/
3. http://www.sci-news.com/physics/quantum-teleportation-communication-10701.html

Cite this article:

Sri Vasagi K (2022), Quantum Teleportation is the Path for Quantum Data Traffic, AnaTechMaz, pp.43