Scientists have managed to send a record-breaking amount of data in quantum form, using a strange unit of quantum information called a qutrit.
The news: Quantum tech promises to allow data to be sent securely over long distances. Scientists have already shown it’s possible to transmit information both on land and via satellites using quantum bits, or qubits. Now physicists at the University of Science and Technology of China and the University of Vienna in Austria have found a way to ship even more data using something called quantum trits, or qutrits.
Qutrits? Oh, come on, you’ve just made that up: Nope, they’re real. Conventional bits used to encode everything from financial records to YouTube videos are streams of electrical or photonic pulses than can represent either a 1 or a 0. Qubits, which are typically electrons or photons, can carry more information because they can be polarized in two directions at once, so they can represent both a 1 and a 0 at the same time. Qutrits, which can be polarized in three different dimensions simultaneously, can carry even more information. In theory, this can then be transmitted using quantum teleportation.
Quantum … what? Quantum teleportation is a method for shipping data that relies on an almost-mystical phenomenon called entanglement. Entangled quantum particles can influence one another’s state, even if they are continents apart. In teleportation, a sender and receiver each receive one of a pair of entangled qubits. The sender measures the interaction of their qubit with another one that holds data they want to send. By applying the results of this measurement to the other entangled qubit, the receiver can work out what information has been transmitted. (For a more detailed look at quantum teleportation, see our explainer here.)
Measuring progress: Getting this to work with qubits isn’t easy—and harnessing qutrits is even harder because of that extra dimension. But the researchers, who include Jian-Wei Pan, a Chinese pioneer of quantum communication, say they have cracked the problem by tweaking the first part of the teleportation process so that senders have more measurement information to pass on to receivers. This will make it easier for the latter to work out what data has been teleported over. The research was published in the journal Physical Review Letters.
Deterring hackers: This might seem rather esoteric, but it has huge implications for cybersecurity. Hackers can snoop on conventional bits flowing across the internet without leaving a trace. But interfering with quantum units of information causes them to lose their delicate quantum state, leaving a telltale sign of hacking. If qutrits can be harnessed at scale, they could form the backbone of an ultra-secure quantum internet that could be used to send highly sensitive government and commercial data.
The Latest on: Quantum internet
via Google News
The Latest on: Quantum internet
- BT to stage 'world-first' test of 5G quantum securityon November 19, 2020 at 4:00 am
BT is joining forces with several UK startups to stage the world’s first trial of end-to-end quantum-secured communications for 5G and connected cars. Whereas classical computing architectures store ...
- China's Lead in Quantum Computing Is Worrying: Meckler (Radio)on November 18, 2020 at 10:44 am
Internet pioneer Alan Meckler, Managing Partner at Asimov Ventures, on the future of quantum computing and the "quantum threat" to cyber security. Hosted by Paul Sweeney and Vonnie Quinn.
- First-of-its-Kind Premium Messaging & Monetization App Quantum Pigeon™ Announces $2.2 M Seed Round & Exclusive Availabilityon November 17, 2020 at 5:00 am
PRNewswire/ - Quantum Pigeon™ (QP), the first premium messaging & monetization app designed for influencers and content creators, today announces the ...
- Quantum Leap: Gone But Not Forgottenon November 16, 2020 at 3:00 am
This week on Gone But Not Forgotten, we're taking a look at one of the most beloved sci-fi shows of the early nineties, the great Quantum Leap! Starring Scott Bakula as Dr. Sam Beckett, a brilliant ...
- Photon juggling: One big quantum processor from 100 little oneson November 14, 2020 at 9:50 pm
One big pile, as Arlo Guthrie once disseminated from practical experience, isn’t really better than two little ones. Yet for a type of computer even less mindful of the law, all the little piles are ...
- Kibo Code Quantum Review of eCommerce training by Aidan Booth and Steve Claytonon November 12, 2020 at 11:21 pm
Online resource eCommerce solutions, Kibo Code Quantum, shed more light on the eight-week eCommerce training by Aidan Booth and Steve Clayton Kibo Code Quantum Review of ...
- New approach to circuit compression could deliver real-world quantum computers years ahead of scheduleon November 12, 2020 at 6:34 pm
A major technical challenge for any practical, real-world quantum computer comes from the need for a large number of physical qubits to deal with errors that accumulate during computation. Such ...
- Quantum internet: the next global network is already being laidon November 12, 2020 at 12:30 am
Yet with much less fanfare, there has also been rapid progress in the development of quantum communication networks, and a master network to unite them all called the quantum internet. Just as the ...
- Global Quantum Cryptography Market Latest Industry Trends, Supply Demand Scenario and Growth Prospects Survey till 2026on November 11, 2020 at 9:11 pm
The global “Quantum Cryptography Market” is expected to rise with an impressive CAGR and generate the highest revenue ...
- Quantum Computing: A Bubble Ready to Burst?on November 11, 2020 at 5:00 am
Quantum physics has the potential to redefine how computers communicate and ensure that no one could ever hack them. But many experts can’t see the finish line, let alone know when we’ll get there.
via Bing News