Quantum 'paparazzi' film photons in the act of pairing up
In the quantum world of light, being distinguishable means staying lonely. Only those photons that are indistinguishable can wind up in a pair, through what is called Hong-Ou-Mandel interference. This...
View ArticleRevealed: Positronium's behavior in particle billiards
Collision physics can be like a game of billiards. Yet in the microscopic world, the outcome of the game is hard to predict. Fire a particle at a group of other particles, and they may scatter, combine...
View ArticleNew optical chip lights up the race for quantum computer
The microprocessor inside a computer is a single multipurpose chip that has revolutionised people's life, allowing them to use one machine to surf the web, check emails and keep track of finances.
View ArticleA quantum lab for everyone
A virtual laboratory allows, for the first time, to actively engage with topical quantum physics. The novel learning environment was developed at the Faculty of Physics at the University of Vienna in...
View ArticleQuantum entanglement: New study predicts a quantum Goldilocks effect
Just as in the well-known children's story of Goldilocks and the Three Bears, something good happens when things are done in moderation, rather than in extremes.
View ArticleCan three pigeons be in two pigeonholes with no two pigeons in the same hole?
Research published this month in the Proceedings of the National Academy of Sciences (PNAS) introduced a new quantum phenomenon which the authors called the "quantum pigeonhole principle." Prior to...
View ArticleQuantum computing is coming—are you prepared for it?
Quantum computing will change lives, society and the economy and a working system is expected to be developed by 2020 according to a leading figure in the world of quantum computing, who will talk...
View ArticleUpper limit found for quantum world
The quantum world and our world of perception obey different natural laws. Leiden physicists search for the border between both worlds. Now they suggest an upper limit in a study reported in Physical...
View ArticleMathematicians revel as Pi Day approaches
Few true mysteries remain, but Pi is one of them.
View ArticleNew strategy helps quantum bits stay on task
Scientists at Florida State University's National High Magnetic Field Laboratory (MagLab) have demonstrated a way to improve the performance of the powerful but persnickety building blocks of quantum...
View ArticleTwo defining features of quantum mechanics never appear together
(Phys.org)—Two of the most important ideas that distinguish the quantum world from the classical one are nonlocality and contextuality. Previously, physicists have theoretically shown that both of...
View ArticleExotic quantum effects can govern the chemistry around us
Objects of the quantum world have a concealed and cold-blooded nature—they usually behave in a quantum manner only when they are significantly cooled and isolated from the environment. Experiments...
View ArticleQuantum swing—a pendulum that moves forward and backwards at the same time
Two-quantum oscillations of atoms in a semiconductor crystal are excited by ultrashort terahertz pulses. The terahertz waves radiated from the moving atoms are analyzed by a novel time-resolving method...
View ArticleBridging the gap between the quantum and classical worlds
In the quantum world, physicists study the tiny particles that make up our classical world - neutrons, electrons, photons - either one at a time or in small numbers because the behaviour of the...
View ArticleNano-scale Canadian flag sets world record in lead-up to nation's 150th birthday
The Institute for Quantum Computing at the University of Waterloo set a world record for creating a Canadian flag measuring about one one-hundredth the width of a human hair.
View ArticleElectrical currents can be now be switched on and off at the smallest...
Robert Wolkow is no stranger to mastering the ultra-small and the ultra-fast. A pioneer in atomic-scale science with a Guinness World Record to boot (for a needle with a single atom at the point),...
View ArticlePhysicists show that real-time error correction in quantum communications is...
Nature Physics today, Monday, 23 January 2017, published online the research by a team led by physicists from the School of Physics at Wits University. In their paper titled: Characterising quantum...
View ArticleArtificial intelligence in quantum systems, too
Quantum biomimetics consists of reproducing in quantum systems certain properties exclusive to living organisms. Researchers at University of the Basque Country have imitated natural selection,...
View ArticleIn a quantum race everyone is both a winner and a loser
Our understanding of the world is mostly built on basic perceptions, such as that events follow each other in a well-defined order. Such definite orders are required in the macroscopic world, for which...
View ArticleClassical synchronization indicates persistent entanglement in isolated...
As if by magic, seemingly independent pendulum clocks can come together to tick simultaneously and in synchrony. The phenomenon of "self-organized synchronization" frequently occurs in nature and...
View ArticleOdd-petal-number states and persistent flows in spin-orbit-coupled...
The quantum world is both elegant and mysterious. It is a sphere of existence where the laws of physics experienced in everyday life are broken—particles can exist in two places at once, they can react...
View ArticleBreaking Newton's Law: Intriguing oscillatory back-and-forth motion of a...
A ripe apple falling from a tree has inspired Sir Isaac Newton to formulate a theory that describes the motion of objects subject to a force. Newton's equations of motion tell us that a moving body...
View ArticleMaxwell's demon extracts work from quantum measurement
(Phys.org)—Physicists have proposed a new type of Maxwell's demon—the hypothetical agent that extracts work from a system by decreasing the system's entropy—in which the demon can extract work just by...
View ArticleProbability that the quantum world obeys local realism is less than one in a...
(Phys.org)—Physicists have reported some of the strongest evidence yet that that the quantum world does not obey local realism by demonstrating new evidence for the existence of quantum entanglement....
View ArticleEntanglement is an inevitable feature of reality
(Phys.org)—Is entanglement really necessary for describing the physical world, or is it possible to have some post-quantum theory without entanglement?
View ArticleRevealing quantum statistics with a pair of distant atoms
An international team of researchers has proposed a new way to make atoms or ions indistinguishable by swapping their positions. These particles are then expected to exhibit exotic properties. The...
View ArticleStudy sheds new light on production of hydroxyl radicals, which help break...
Residents in some areas of the developing world are currently coping with dangerous levels of air pollution. Recent research, co-led by the U.S. Department of Energy's (DOE) Argonne National...
View ArticleMachine learning and neural networks recognize exotic insulating phases in...
Does it conduct electricity? Or insulate against electricity? Physicists commonly classify material phases as one or the other. Machine learning is a powerful tool for pattern recognition and thus...
View ArticleQuantum speed limit may put brakes on quantum computers
Over the past five decades, standard computer processors have gotten increasingly faster. In recent years, however, the limits to that technology have become clear: Chip components can only get so...
View ArticleGroundbreaking experiment will test the limits of quantum theory
Scientists from three UK universities are to test one of the fundamental laws of physics as part of a major Europe-wide project awarded more than £3m in funding.
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