Together with the University of Innsbruck, the ETH Zurich and Interactive Fully Electrical Vehicles SRL, Infineon Austria is researching specific questions on the commercial use of quantum computers. With new innovations in design and manufacturing, the partners from universities and industry want to develop affordable components for quantum computers.
The ability to securely transmit information over the internet is extremely important, but most of the time, eavesdroppers can still generally determine who the sender and receiver are. In some highly confidential situations, it is important that the sender’s and receiver’s identities remain anonymous.
Over the past couple of decades, researchers have been developing protocols for anonymously transmitting messages over classical networks, but similar protocols for quantum networks are still in much earlier stages of development. The anonymity methods that have been proposed for quantum networks so far face challenges such as implementation difficulties or require that strong assumptions be made about the resources, making them impractical for use in the real world.
In a new paper, Anupama Unnikrishnan, Ian MacFarlane, Richard Yi, Eleni Diamanti, Damian Markham, and Iordanis Kerenidis, from the University of Oxford, MIT, Sorbonne University, the University of Paris and CNRS, have proposed the first practical protocol for anonymous communication in quantum networks.
Magnetic resonance imaging is nothing new, but scientists were able to perform an MRI on a single atom. But how?
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Scientists recently captured the smallest MRI ever while scanning an individual atom. The technique successfully reached a breakthrough level of resolution in the world of microscopy, the detailed MRI can reveal single atoms as well as different types of atoms based on their magnetic interactions.
Cambridge Quantum Computing has a demo of its quantum key security generation at Ironbridgeapi.com.
Y.-H. Luo et al. Quantum teleportation in high dimensions. Physical Review Letters. Vol. 123, August 16, 2019. doi:10.1103/PhysRevLett.123.070505.
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Researchers from the Austrian Academy of Sciences and the University of Vienna have experimentally demonstrated what was previously only a theoretical possibility. Together with quantum physicists from the University of Science and Technology of China, they have succeeded in teleporting complex high-dimensional quantum states. The research teams report this international first in the journal “Physical Review Letters”.
In their study, the researchers teleported the quantum state of one photon (light particle) to another distant one. Previously, only two-level states (“qubits”) had been transmitted, i.e., information with values “0” or “1”. However, the scientists succeeded in teleporting a three-level state, a so-called “qutrit”. In quantum physics, unlike in classical computer science, “0” and “1” are not an ‘either/or’ – both simultaneously, or anything in between, is also possible. The Austrian-Chinese team has now demonstrated this in practice with a third possibility “2”.
Novel experimental method.
A team of physicists claims to have discovered a new state of matter — a breakthrough that could vastly improve traditional as well as quantum computing.
The new state, called “topological superconductivity,” could help to increase storage capabilities in electronic devices and enhance quantum computing.
RELATED: ‘QUTRIT’ EXPERIMENTS SHOW PROGRESS IN QUANTUM TELEPORTATION
By Leah Crane
Some ideas about the quantum world appear to suggest there are many versions of you spread out across many parallel universes. Now, two scientists have formulated a proof that attempts to show this is really true.
The proof involves a fundamental construct in quantum mechanics called Bell’s theorem. This theorem deals with situations where particles interact with each other, become entangled, and then go their separate ways. It is what’s called a “no-go theorem”, one designed to show that some assumption about how the world works is not true.
For the first time, Chinese scientists have demonstrated the experiment of transferring quantum information in a 3D state.
Limited in a two-level state for a long time, the study paves the way to teleporting the complete quantum state of a particle, according to an article in American Physical Society a top peer-review journal.
According to Pan Jianwei, coauthor of the study known as the “father of quantum” in China, quantum teleportation is a new communication method to transfer quantum information – a particle’s quantum state in the micro-world.
