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Current Quantum Communication News and Events, Quantum Communication News Articles.
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Electrically switchable qubit can tune between storage and fast calculation modes
To perform calculations, quantum computers need qubits to act as elementary building blocks that process and store information. Now, physicists have produced a new type of qubit that can be switched from a stable idle mode to a fast calculation mode. The concept would also allow a large number of qubits to be combined into a powerful quantum computer, as researchers from the University of Basel and TU Eindhoven have reported in the journal Nature Nanotechnology. (2021-01-11)

Discovery of quantum behavior in insulators suggests possible new particle
A team led by Princeton physicists discovered a surprising quantum phenomenon in an atomically thin insulator made of tungsten ditelluride. The results suggest the formation of completely new types of quantum phases previously hidden in insulators. (2021-01-11)

Entangling electrons with heat
Quantum entanglement is key for next-generation computing and communications technology, Aalto researchers can now produce it using temperature differences. (2021-01-08)

Researchers realize efficient generation of high-dimensional quantum teleportation
In a study published in Physical Review Letters, the team led by academician GUO Guangcan from University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) made progress in high dimensional quantum teleportation. The researchers demonstrated the teleportation of high-dimensional states in a three-dimensional six-photon system. (2021-01-08)

Delivering the news with humor makes young adults more likely to remember and share
Could the merging of humor and news actually help inform the public? New research from the Annenberg School at the University of Pennsylvania and the School of Communication at Ohio State University found that young people were more likely to remember information about politics and government policy when it was conveyed in a humorous rather than non-humorous manner. They were also more willing to share the information online. (2021-01-07)

Researchers question fundamental study on the Kondo effect
In 1998, spectroscopic studies on the Kondo effect using scanning tunnelling microscopy were published, which are considered ground-breaking and have triggered countless others of a similar kind. Many of these studies may have to be re-examined now that researchers from Jülich, Germany have shown that the Kondo effect cannot be proven beyond doubt by this method. Instead, another phenomenon is creating precisely the spectroscopic ''fingerprint'' that was previously attributed to the Kondo effect. (2021-01-07)

A bit too much: reducing the bit width of Ising models for quantum annealing
Quantum annealers are devices that physically implement a quantum system called the 'Ising model' to solve combinatorial optimization problems. However, the coefficients of the Ising model often require a large bit width, making it difficult to implement physically. Now, scientists from Japan demonstrate a method to reduce the bit width of any Ising model, increasing the applicability and versatility of quantum annealers in many fields, including cryptography, logistics, and artificial intelligence. (2021-01-06)

The world's first integrated quantum communication network
Chinese scientists have established the world's first integrated quantum communication network, combining over 700 optical fibers on the ground with two ground-to-satellite links to achieve quantum key distribution over a total distance of 4,600 kilometers for users across the country. (2021-01-06)

Physicists observe competition between magnetic orders
Two-dimensional materials, consisting of a single layer of atoms, have been booming in research for years. They possess novel properties that can only be explained with the help of the laws of quantum mechanics. Researchers have now used ultracold atoms to gain new insights into previously unknown quantum phenomena. They found out that the magnetic orders between two coupled thin films of atoms compete with each other. The study has been published in Nature. (2021-01-06)

Breaking through the resolution barrier with quantum-limited precision
Researchers at Paderborn University have developed a new method of distance measurement for systems such as GPS, which achieves more precise results than ever before. Using quantum physics, the team led by Leibniz Prize winner Professor Christine Silberhorn has successfully overcome the so-called resolution limit. (2021-01-05)

Scientists reach limit of multi-parameter quantum measurement with zero trade-off
Real-life applications like magnetometry or quantum gyroscope typically involve precise measurement on multiple parameters. How to achieve the ultimate precision limits simultaneously is a long sought-after grail in the field. (2021-01-04)

Scrambled supersolids
Supersolids are fluid and solid at the same time. Physicists from Innsbruck and Geneva have for the first time investigated what happens when such a state is brought out of balance. They discovered a soft form of a solid of high interest for science. As the researchers led by Francesca Ferlaino and Thierry Giamarchi report in Nature Physics, they were also able to reverse the process and restore supersolidity. (2021-01-04)

How to motivate people to follow restrictions: 13 principles for COVID-19 communication
Based on a large body of existing research, four leading researchers of self-determination theory, Frank Martela (Aalto University), Nelli Hankonen (University of Helsinki), Richard M. Ryan (Australian Catholic University) and Maarten Vansteenkiste (Universiteit Gent) have crystallised 13 communication principles to foster voluntary compliance in a crisis such as COVID-19. The paper been approved for publication in the prestigious European Review of Social Psychology. (2021-01-04)

Microfabricated elastic diamonds improve material's electronic properties
Overcoming a key obstacle in achieving diamond-based electronic and optoelectronic devices, researchers have presented a new way to fabricate micrometer-sized diamonds that can elastically stretch. (2020-12-31)

Industry collaboration leads to important milestone in the creation of a quantum computer
One of the obstacles for progress in the quest for a working quantum computer has been that the working devices that go into a quantum computer and perform the actual calculations, the qubits, have hitherto been made by universities and in small numbers. But in recent years, a pan-European collaboration, in partnership with French microelectronics leader CEA-Leti, has been exploring everyday transistors--that are present in billions in all our mobile phones--for their use as qubits. (2020-12-28)

Extremely energy efficient microprocessor developed using superconductors
Researchers from Yokohama National University in Japan have developed a prototype microprocessor using superconductor devices that are about 80 times more energy efficient than the state-of-the-art semiconductor devices found in the microprocessors of today's high-performance computing systems. (2020-12-28)

Perfect transmission through barrier using sound
A research team led by Professor Xiang Zhang, President of the University of Hong Kong (HKU) when he was a professor at the University of California, Berkeley, (UC Berkeley) has for the first time experimentally proved a century old quantum theory that relativistic particles can pass through a barrier with 100% transmission. (2020-12-23)

Theory describes quantum phenomenon in nanomaterials
Theoretical physicists Yoshimichi Teratani and Akira Oguri of Osaka City University, and Rui Sakano of the University of Tokyo have developed mathematical formulas that describe a physical phenomenon happening within quantum dots and other nanosized materials. The formulas, published in the journal Physical Review Letters, could be applied to further theoretical research about the physics of quantum dots, ultra-cold atomic gasses, and quarks. (2020-12-23)

Quantum wave in helium dimer filmed for the first time
For the first time, an international team of scientists from Goethe University and the University of Oklahoma has succeeded in filming quantum physical effects on a helium dimer as it breaks apart. The film shows the superposition of matter waves from two simultaneous events that occur with different probability: The survival and the disintegration of the helium dimer. This method might in future make it possible to track experimentally the formation and decay of quantum Efimov systems. (2020-12-23)

Wi-Fi technology with fiber optic-like performance for Industry 4.0
It is the first step towards high performance wireless communications in the manufacturing industry (2020-12-22)

Researchers invent method to 'sketch' quantum devices with focused electrons
A technique created by researchers out of the Department of Physics and Astronomy enables them to ''sketch'' patterns of electrons into a programmable quantum material--lanthanum aluminate/strontium titanate or ''LAO/STO''. (2020-12-21)

Optoelectronic devices that emit warm and cool white light
A single semiconducting material can produce white light by emitting light across the visible spectrum. (2020-12-21)

Experiments first verify distributed quantum phase estimation
Professor PAN Jianwei and his colleges from University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) have achieved the experimental verification of distribution quantum phase estimation for the first time. This work was published on Nature Photonics. (2020-12-21)

Goldilocks and the three quantum dots: Just right for peak solar panel performance
Maximizing the efficiency of renewable energy technology is dependent on creating nanoparticles with ideal dimensions and density, new simulations have shown. (2020-12-20)

When light and atoms share a common vibe
Scientists from EPFL, MIT, and CEA Saclay demonstrate a state of vibration that exists simultaneously at two different times. They evidence this quantum superposition by measuring the strongest class of quantum correlations between light beams that interact with the vibration. (2020-12-18)

Tiny quantum computer solves real optimisation problem
Quantum computers have already managed to surpass ordinary computers in solving certain tasks - unfortunately, totally useless ones. The next milestone is to get them to do useful things. Researchers at Chalmers University of Technology, Sweden, have now shown that they can solve a small part of a real logistics problem with their small, but well-functioning quantum computer. (2020-12-17)

Ultra-thin designer materials unlock quantum phenomena
New research, published in Nature, has measured highly sought-after Majorana quantum states (2020-12-17)

A new means of neuronal communication discovered in the human brain
An international research group has discovered in the human brain a new functional coupling mechanism between neurons, which may serve as a communication channel between brain regions. (2020-12-17)

Stevens creates entangled photons 100 times more efficiently than previously possible
Super-fast quantum computers and communication devices could revolutionize countless aspects of our lives -- but first, researchers need a fast, efficient source of the entangled pairs of photons such systems use to transmit and manipulate information. Researchers at Stevens Institute of Technology have done just that, not only creating a chip-based photon source 100 times more efficient that previously possible, but bringing massive quantum device integration within reach. (2020-12-17)

JILA's bigger and better 'tweezer clock' is super stable
JILA physicists have boosted the signal power of their atomic 'tweezer clock' and measured its performance in part for the first time, demonstrating high stability close to the best of the latest generation of atomic clocks. (2020-12-16)

Ultracold atoms reveal a new type of quantum magnetic behavior
An MIT experiment with ultracold atoms reveals new quantum magnetic behavior that may help in design of spintronic devices and magnetic materials. (2020-12-16)

New type of atomic clock keeps time even more precisely
An MIT-designed atomic clock uses entangled atoms to keep time even more precisely than its state-of-the-art counterparts. The design could help scientists detect dark matter and study gravity's effect on time. (2020-12-16)

Information transport in antiferromagnets via pseudospin-magnons
A team of researchers from the Technical University of Munich (TUM), the Bavarian Academy of Sciences and Humanities (BAdW), and the Norwegian University of Science and Technology (NTNU) in Trondheim has discovered an exciting method for controlling spin carried by quantized spin wave excitations in antiferromagnetic insulators. (2020-12-16)

Polariton interactions: Light matters
Why do 2D exciton-polaritons interact? This intriguing quasiparticle, which is part light (photon), and part matter (exciton), doesn't behave as predicted: continuing to interact with other particles when confined to two dimensions in extremely cold conditions. A new FLEET/Monash study finds the answer lies in the 'light-like' characteristics of these quasiparticles, with importance for future applications such as ultra-low energy electronics. (2020-12-16)

Physicists quantum simulate a system in which fermions with multiple flavors behave like bosons
Quantum simulations show that boson-like behaviours, so-called bosonization, emerge from an ensemble of fermions in three-dimensional systems, despite that bosons and fermions are governed by distinct quantum statistics (2020-12-16)

Researchers develop Si-based super-high frequency nanoelectromechanical resonator
Recently, a group led by Prof. GUO Guoping from the University of Science and Technology of China of the Chinese Academy of Sciences, collaborating with Prof. ZHANG Zhen's group from Uppsala University, Sweden, designed and fabricated CMOS-compatible suspended SHT devices which worked as super-high frequency nanoelectromechanical resonators. The work was published in Advanced Materials. (2020-12-15)

Temporal control of light echoes
Scientists at Paderborn University, the Technical University of Dortmund and the University of Würzburg have for the very first time succeeded in using laser pulses to precisely control 'photon echoes', which can occur when light waves superimpose on each other. The findings of the research have now been published in scientific journal Communications Physics, published by the Nature Publishing Group. (2020-12-14)

Quantum interference in time
Bosons--especially photons--have a natural tendency to clump together. In 1987, three physicists conducted a remarkable experiment demonstrating this clustering property, known as the Hong-Ou- Mandel effect. Recently, researchers at ULB's Centre for Quantum Information and Communication, have identified another way in which photons manifest their propensity to stick together. This research has just been published in PNAS (2020-12-14)

'Magic' angle graphene and the creation of unexpected topological quantum states
Electrons inhabit a strange and topsy-turvy world. These infinitesimally small particles have never ceased to amaze and mystify despite the more than a century that scientists have studied them. Now, in an even more amazing twist, physicists have discovered that, under certain conditions, interacting electrons can create what are called ''topological quantum states.'' This finding, recently published in the journal Nature, has implications for many technological fields of study, especially information technology. (2020-12-14)

Quantum mysteries: Probing an unusual state in the superconductor-insulator transition
Scientists at Tokyo Institute of Technology approach the two decade-old mystery of why an anomalous metallic state appears in the superconductor-insulator transition in 2D superconductors. Through experimental measurements of a thermoelectric effect, they found that the ''quantum liquid state'' of quantum vortices causes the anomalous metallic state. The results clarify the nature of the transition and could help in the design of superconducting devices for quantum computers. (2020-12-14)

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