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Current Quantum Information News and Events, Quantum Information News Articles.
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In a new quantum simulator, light behaves like a magnet
Physicists at EPFL propose a new 'quantum simulator': a laser-based device that can be used to study a wide range of quantum systems. Studying it, the researchers have found that photons can behave like magnetic dipoles at temperatures close to absolute zero, following the laws of quantum mechanics. The simple simulator can be used to better understand the properties of complex materials under such extreme conditions. (2019-03-21)

Princeton scientists discover chiral crystals exhibiting exotic quantum effects
Princeton physicist Zahid Hasan led an international team of physicists who have discovered a form of chiral crystals -- crystals with an asymmetry like biological ''handedness'' -- that host slow light-like massless electrons. The movement of some groups of electrons in these crystals mimics the behavior of magnetic monopoles. These strange properties may be utilized for next-generation quantum, magnetic and optical technologies. (2019-03-20)

Computer program developed to find 'leakage' in quantum computers
A new computer program that spots when information in a quantum computer is escaping to unwanted states will give users of this promising technology the ability to check its reliability without any technical knowledge for the first time. (2019-03-19)

Long-distance quantum information exchange -- success at the nanoscale
At the Niels Bohr Institute, University of Copenhagen, researchers have realized the swap of electron spins between distant quantum dots. The discovery is a step towards applications of quantum information, as the dots leave enough room for delicate control electrodes, enabling integration with traditional microelectronics and perhaps, a future quantum computer. The result is achieved via collaboration with Purdue University and the University of Sydney, Australia, now published in Nature Communications. (2019-03-18)

Semimetals are high conductors
Researchers in China and at UC Davis have measured high conductivity in very thin layers of niobium arsenide, a type of material called a Weyl semimetal. The material has about three times the conductivity of copper at room temperature. (2019-03-18)

Artificial intelligence speeds up!
A group at Politecnico di Milano has developed an electronic circuit able to solve a system of linear equations in a single operation in the timescale of few tens of ns. (2019-03-15)

Nanocrystal 'factory' could revolutionize quantum dot manufacturing
A new system for synthesizing quantum dots across the entire spectrum of visible light drastically reduces manufacturing costs, can be tuned on demand to any color and allows for real-time process monitoring to ensure quality control. (2019-03-15)

Researchers measure near-perfect performance in low-cost semiconductors
Stanford researchers redefine what it means for low-cost semiconductors, called quantum dots, to be near-perfect and find that quantum dots meet quality standards set by more expensive alternatives. (2019-03-15)

Researchers reverse the flow of time on IBM's quantum computer
An international team of scientists led by the US Department of Energy's Argonne National Laboratory explored the concept of reversing time in a first-of-its-kind experiment, managing to return a computer briefly to the past. The results, published March 13 in the journal Scientific Reports, suggest new paths for exploring the backward flow of time in quantum systems and present new possibilities for quantum computer program testing and error correction. (2019-03-14)

ANU research set to shake up space missions
A new study from the Australian National University has found a number of 2D materials can not only withstand being sent into space, but potentially thrive in the harsh conditions. (2019-03-14)

Physicists reverse time using quantum computer
Researchers from the Russia teamed up with colleagues from the US and Switzerland and returned the state of a quantum computer a fraction of a second into the past. They also calculated the probability that an electron in empty interstellar space will spontaneously travel back into its recent past. (2019-03-13)

Can artificial intelligence solve the mysteries of quantum physics?
A new study published in Physical Review Letters by Prof. Shashua's computer science doctoral students at Hebrew University has demonstrated mathematically that algorithms based on deep neural networks can be applied to better understand the world of quantum physics, as well. (2019-03-12)

Researchers turn liquid metal into a plasma
For the first time, researchers at the University of Rochester's Laboratory for Laser Energetics (LLE) have found a way to turn a liquid metal into a plasma and to observe the temperature where a liquid under high-density conditions crosses over to a plasma state. Their observations, published in Physical Review Letters, have implications for better understanding stars and planets and could aid in the realization of controlled nuclear fusion -- a promising alternative energy source whose realization has eluded scientists for decades. (2019-03-11)

Quantum physicists succeed in controlling energy losses and shifts
In their paper to be published on March 11, 2019 in Nature Physics, scientists from Aalto University and the University of Oulu demonstrate that they can increase the dissipation rate, on demand, by a factor of thousand in a high-quality superconducting resonator--just like the ones used in prototype quantum computers. (2019-03-11)

Spontaneous spin polarization demonstrated in a two-dimensional material
Physicists from the University of Basel have demonstrated spin alignment of free electrons within a two-dimensional material. Writing in the latest edition of Nature Nanotechnology, they described their observation of spontaneous spin polarization, which cannot occur in ideal two-dimensional materials according to a well-known theorem from the 1960s. (2019-03-11)

Sydney united to build a quantum harbor city
Working together, researchers at the University of Sydney and UNSW have overcome a fundamental hurdle to building quantum computers in silicon. (2019-03-11)

Listening to quantum radio
Researchers at Delft University of Technology have created a quantum circuit that enables them to listen to the weakest radio signal allowed by quantum mechanics. This new quantum circuit opens the door to possible future applications in areas such as radio astronomy and medicine (MRI). It also enables researchers to do experiments that can shed light on the interplay between quantum mechanics and gravity. (2019-03-08)

When semiconductors stick together, materials go quantum
A team of researchers led by DOE's Lawrence Berkeley National Laboratory has developed a simple method that could turn ordinary semiconducting materials into quantum machines -- superthin devices marked by extraordinary electronic behavior that could help to revolutionize a number of industries aiming for energy-efficient electronic systems -- and provide a platform for exotic new physics. (2019-03-07)

Breakthrough could enable cheaper infrared cameras
A new breakthrough by scientists with the University of Chicago may one day lead to much more cost-effective infrared cameras -- which in turn could enable infrared cameras for common consumer electronics like phones, as well as sensors to help autonomous cars see their surroundings more accurately. (2019-03-07)

Graphene quantum dots for single electron transistors
Scientists from the Higher School of Economics, Manchester University, the Ulsan National Institute of Science & Technology and the Korea Institute of Science and Technology have developed a novel technology, which combines the fabrication procedures of planar and vertical heterostructures in order to assemble graphene-based single-electron transistors of excellent quality. (2019-03-06)

Can entangled qubits be used to probe black holes?
Information escapes from black holes via Hawking radiation, so it should be possible to capture it and use it to reconstruct what fell in: if given time longer than the age of the universe. However, if information is scrambled rapidly when it falls in, it may be possible to resurrect it by capturing Hawking radiation from entangled qubits. Physicists confirmed scrambling in a quantum computer, based on predictions by UC Berkeley and Perimeter Institute theorists. (2019-03-06)

Ion experiment aces quantum scrambling test
Researchers at the Joint Quantum Institute have implemented an experimental test for quantum scrambling, a chaotic shuffling of the information stored among a collection of quantum particles. Their experiments on a group of seven atomic ions demonstrate a new way to distinguish between scrambling and true information loss. The protocol may one day help verify the calculations of quantum computers, which harness the rules of quantum physics to process information in novel ways. (2019-03-06)

A study by the UC3M researches the limits of topological insulators using sound waves
Research in which the Universidad Carlos III de Madrid (UC3M) is taking part analyses the future of topological insulators using sound waves, meaning materials that behave like acoustic insulators in their interior, but at the same time allow the movement of sound waves at their surface. This line of research could improve acoustic non-destructive testing and medical diagnostics based on ultrasound scans. (2019-03-05)

New hurdle cleared in race toward quantum computing
Researchers have created a new device that allows them to probe the interference of quasiparticles, potentially paving the way for the development of topological qubits. (2019-03-04)

New quantum sensor could improve cancer treatment
A new quantum sensor developed by researchers at the University of Waterloo's Institute for Quantum Computing has proven it can outperform existing technologies and promises significant advancements in long-range 3D imaging and monitoring the success of cancer treatments. (2019-03-04)

Researchers use machine learning to more quickly analyze key capacitor materials
Researchers at Georgia Institute of Technology are using machine learning to ultimately find ways to build more capable capacitors. (2019-03-04)

The force is with us, always? Tuning quantum vacuum forces from attractive to repulsive
Scientists can put two uncharged metal plates close together in a vacuum, and 'voila!' ---they will attract each other. In 1948, Dutch theoretical physicist Hendrick Casimir first predicted an attractive force responsible for this effect. Scientists have wondered, can there be an equal yet opposite kind of Casimir force? ASU physicist Frank Wilczek has shown for the first time that the Casimir force can be reversed and made repulsive, tunable or enhanced, based on the material inserted in between the plates. (2019-03-04)

Ultracold atoms could provide 2D window to exotic 1D physics
Rice physicists propose new vantage point to observe quantum fractionalization. (2019-03-04)

Researchers move closer to practical photonic quantum computing
For the first time, researchers have demonstrated a way to map and measure large-scale photonic quantum correlation with single-photon sensitivity. The ability to measure thousands of instances of quantum correlation is critical for making photon-based quantum computing practical. (2019-02-28)

Exchanging information securely using quantum communication in future fiber-optic networks
Searching for better security during data transmission, governments and other organizations around the world have been investing in and developing technologies related to quantum communication and related encryption methods. Researchers are looking at how these new systems -- which, in theory, would provide unhackable communication channels -- can be integrated into existing and future fiber-optic networks. (2019-02-28)

Yale researchers create a 'universal entangler' for new quantum tech
One of the key concepts in quantum physics is entanglement, in which two or more quantum systems become so inextricably linked that their collective state can't be determined by observing each element individually. Now Yale researchers have developed a ''universal entangler'' that can link a variety of encoded particles on demand. The discovery represents a powerful new mechanism with potential uses in quantum computing, cryptography, and quantum communications. (2019-02-27)

Immunizing quantum computers against errors
Researchers at ETH Zurich have used trapped calcium ions to demonstrate a new method for making quantum computers immune to errors. To do so, they created a periodic oscillatory state of an ion that circumvents the usual limits to measurement accuracy. (2019-02-27)

Code used to reduce quantum error in logic gates for first time
Scientists at the University of Sydney have for the first time demonstrated improvement in quantum computers by using codes designed to detect and discard errors in the logic gates of such machines. The codes were applied to IBM's quantum computer via IBM Q. (2019-02-27)

'Immunizing' quantum bits so that they can grow up
Qubits need a better immune system before they can grow up. A new material, engineered by Purdue University researchers into a thin strip, is one step closer to 'immunizing' qubits against noise, such as heat and other parts of a computer, that interferes with how well they hold information. (2019-02-26)

It's all in the twist: Physicists stack 2D materials at angles to trap particles
In a paper published Feb. 25 in the journal Nature, a University of Washington-led team of physicists report that they have developed a new system to trap individual excitons -- bound pairs of electrons and their associated positive charges. Their system could form the basis of a novel experimental platform for monitoring excitons with precision and potentially developing new quantum technologies. (2019-02-25)

Graphite offers up new quantum surprise
Researchers at The University of Manchester in the UK, led by Dr. Artem Mishchenko, Professor Volodya Fal'ko and Professor Andre Geim, have discovered the quantum Hall effect in bulk graphite -- a layered crystal consisting of stacked graphene layers. (2019-02-25)

Faster method to read quantum memory
Scientists at Aalto University and VTT have developed a faster way to read information out of qubits, the basic building blocks of a quantum computer. (2019-02-25)

New study reveals when a superconductor truly becomes super
A research team including Jianshi Zhou from UT Austin has confirmed the existence of a phase transition in copper-oxide-based (or cuprate) superconductors. The team believes that it could be during this 'quantum critical point,' when superconductivity actually occurs. (2019-02-25)

Entangling photons of different colors
Researchers at the National Institute of Standards and Technology (NIST) have developed a novel way to entangle two photons--one with a wavelength suitable for quantum-computing devices and the other for fiber-optics transmissions. (2019-02-25)

Exploring the global landscape of quantum technology research
Leading quantum technology experts from around the world have explored their respective regional and national goals for the future of the field, in a new focus issue of Quantum Science and Technology. The first five articles in the collection, covering Australia, Japan, the United States, Canada and the European Union, are published today. They are written by the leading researchers involved in each country or region's initiative. (2019-02-22)

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