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
- The Contest to Protect Almost Everything on the Interneton October 7, 2020 at 2:08 pm
The world’s top cryptographers are competing to develop algorithms that can withstand attacks from an ultrafast quantum computer.
- Quantum Networking: A Ten-year Forecast and Opportunity Analysis - ResearchAndMarkets.comon October 7, 2020 at 7:10 am
The "Quantum Networking: A Ten-year Forecast and Opportunity Analysis" report has been added to ResearchAndMarkets.com's offering.
- Aliro Quantum helps researchers get started on quantum apps and networkson October 6, 2020 at 9:52 pm
Aliro Technologies Inc. today announced the availability of its cross-platform quantum computing software portfolio that it says can serve as a foundation for organizations hoping ...
- Light Rider Unveils Quantum LiFi Technology to Create Next-Generation Network Securityon October 6, 2020 at 6:26 am
Light Rider Inc., a quantum LiFi company, today debuted its first two quantum encryption products poised to revolutionize network security for businesses and individuals. The company is the first to ...
- What The U.S. Investment In Quantum Computing Means For Securityon October 5, 2020 at 5:41 am
The U.S. may be late out of the starting gate, but the multidimensional approach taken by public and private organizations may ultimately prove successful.
- Quantum computing: Photon startup lights up the future of computers and cryptographyon October 5, 2020 at 2:37 am
Topic: Start-Ups A fast-growing UK startup is quietly making strides in the promising field of quantum photonics. Cambridge-based company Nu Quantum is building devices that can emit and detect ...
- The Quantum Internet Will Blow Your Mind. Here’s What It Will Look Likeon October 3, 2020 at 4:15 pm
The next generation of the Internet will rely on revolutionary new tech. It will make unhackable networks real — and transmit information faster than the speed of light.
- D-Wave announces launch of new Advantage quantum computer for business useon September 30, 2020 at 7:22 am
Wave has announced on its blog that it has developed a new quantum computer for use by businesses. Called Advantage, the new system has 5,000 qubits and 15-way qubit connectivity. The new machine will ...
- CERN meets quantum technologyon September 29, 2020 at 7:16 am
Today's information and communication technology grew out of the invention and development of quantum mechanics during the last century. But, nifty as it is that billions of transistors can be packed ...
- ‘Schrödinger’s Web’ offers a sneak peek at the quantum interneton September 28, 2020 at 5:04 am
For an entertaining overview of the physics and technological advances paving the way for the quantum internet, read ‘Schrödinger’s Web.’ ...
via Bing News