Quantum Mechanics
Rational transparent conductor design provides a boost to carbon nanotubes application  PHYS.ORG · 21 hours
An international team of scientists led by researchers from the Laboratory of Nanomaterials at the Skoltech Center for Photonics and Quantum Materials (CPQM) has rationally designed... more
Mathematicians prove the Hardy-Littlewood-Sobolev inequalities  PHYS.ORG · 2 days
RUDN University mathematicians have proven the Hardy-Littlewood-Sobolev (HLS) inequalities for the class of generalized Riesz potentials. These results extend the scope of these potentials in mathematics and physics because the main tools for working with such potentials are... more
A distinct spin on atomic transport  PHYS.ORG · 3 days
One of the more unexpected things that can be done with charge-neutral atoms is using them to emulate the fundamental behavior of electrons. Over the past few years, the group of Tilman Esslinger at the Institute... more
Room temperature strain-induced Landau levels in graphene on a wafer-scale platform  Science Magazine · 6 days
Graphene is a powerful playground for studying a plethora of quantum phenomena. One of the remarkable properties of graphene arises when it is strained in particular... more
A new quantum data classification protocol brings us nearer to a future 'quantum internet'  PHYS.ORG · 6 days
Quantum-based communication and computation technologies promise unprecedented applications, such as unconditionally secure communications, ultra-precise sensors, and quantum computers capable of... more
New research synthesizes different aspects of causality in quantum field theory  PHYS.ORG · 6 days
In current quantum field theory, causality is typically defined by the vanishing of field commutators for spacelike separations. Two researchers at the University of Massachusetts and... more
Engineering spin-orbit synthetic Hamiltonians in liquid-crystal optical cavities  Science Magazine · 7 days
Spin-orbit interactions lead to distinctive functionalities in photonic systems. They exploit the analogy between the quantum mechanical description of a complex electronic spin-orbit system and synthetic Hamiltonians derived for the propagation of... more
Physicists Can Finally Peek at Schrödinger's Cat Without Killing It Forever  LIVE SCIENCE · 7 days
There may be a way of sneaking a peak at Schrödinger's cat — the famous feline-based thought experiment that describes the mysterious behavior of subatomic particles... more
Black holes sometimes behave like conventional quantum systems  PHYS.ORG · 1 week
A group of Skoltech researchers led by Professor Anatoly Dymarsky have studied the emergence of generalized thermal ensembles in quantum systems with additional symmetries. As a result they found that black holes... more
Ultrafast quantum motion in a nanoscale trap detected  SCIENCE DAILY · 1 week
Researchers have reported the detection of a picosecond electron motion in a silicon transistor. This study has presented a new protocol for measuring ultrafast electronic dynamics in an effective time-resolved fashion of... more
Black holes sometimes behave like conventional quantum systems  nanowerk · 1 week
Astronomers have studied the emergence of generalized thermal ensembles in quantum systems with additional symmetries. As a result they found that black holes thermalize the same way ordinary matter does. more
Study observes anomalous decay of coherence in a dissipative many-body system  PHYS.ORG · 1 week
In quantum physics, some of the most interesting effects are the result of interferences. Decoherence, or loss of coherence, occurs when a quantum system eventually loses... more
Ultrafast quantum motion in a nanoscale trap detected  PHYS.ORG · 1 week
KAIST researchers have reported the detection of a picosecond electron motion in a silicon transistor. This study has presented a new protocol for measuring ultrafast electronic dynamics in an effective time-resolved fashion... more
Laser pulses create topological state in graphene  PHYS.ORG · 1 week
Discovering ways to control the topological aspects of quantum materials is an important research frontier because it can lead to desirable electrical and spin transport properties for future device technologies. Now MPSD scientists have... more
Ultrafast quantum motion in a nanoscale trap detected  nanowerk · 1 week
Researchers have reported the detection of a picosecond electron motion in a silicon transistor. This study presents a new protocol for measuring ultrafast electronic dynamics in an effective time-resolved fashion of picosecond... more
Chemists observe 'spooky' quantum tunneling  PHYS.ORG · 1 week
A molecule of ammonia, NH3, typically exists as an umbrella shape, with three hydrogen atoms fanned out in a nonplanar arrangement around a central nitrogen atom. This umbrella structure is very stable and would normally be expected to... more
Chemists observe “spooky” quantum tunneling  MIT · 1 week
Extremely large electric fields can prevent umbrella-shaped ammonia molecules from inverting. more
In classical and quantum secure communication practical randomness is incomplete  PHYS.ORG · 1 week
Random bit sequences are key ingredients of various tasks in modern life and especially in secure communication. In a new study researchers have determined that generating true random... more
A memory effect at single-atom level  nanowerk · 1 week
An international research group has observed new quantum properties on an artificial giant atom. The quantum system under investigation apparently has a memory - a new finding that could be used to build a quantum computer. more
The Secrets of Ghost Particle Hunting  ASTRO WATCH · 2 weeks
Every day is Halloween for physicist George Fuller, director for the Center of Astrophysics and Space Sciences at UC San Diego and one of... more
Cage molecules act as molecular sieves for hydrogen isotope separation  SCIENCE DAILY · 2 weeks
Researchers have created hybrid porous organic cages capable of high-performance quantum sieving that could help advance the deuterium/hydrogen isotope separation technologies needed for fusion power. more
Quantum chip 1,000 times smaller than current setups  SCIENCE DAILY · 2 weeks
Researchers have developed a quantum communication chip that is 1,000 times smaller than current quantum setups, but offers the same superior security quantum technology is known for. more
Evading Heisenberg isn't easy  SCIENCE DAILY · 2 weeks
Researchers unravel novel dynamics in the interaction between light and mechanical motion with significant implications for quantum measurements designed to evade the influence of the detector in the notorious 'back action limit' problem. more
Barely porous organic cages for hydrogen isotope separation  Science Magazine · 2 weeks
The separation of hydrogen isotopes for applications such as nuclear fusion is a major challenge. Current technologies are energy intensive and inefficient. Nanoporous materials have the potential to separate hydrogen isotopes by... more
Evading Heisenberg isn't easy  PHYS.ORG · 2 weeks
EPFL researchers, with colleagues at the University of Cambridge and IBM Research-Zurich, unravel novel dynamics in the interaction between light and mechanical motion with significant implications for quantum measurements designed to evade the influence of the detector in the notorious... more
Scientists tame Josephson vortices  PHYS.ORG · 2 weeks
MIPT physicists have learned how to locally control Josephson vortices. The discovery can be used for quantum electronics superconducting devices and future quantum processors. The work has been published in the prestigious scientific journal Nature Communications. more
Researchers create quantum chip 1,000 times smaller than current setups  PHYS.ORG · 2 weeks
Researchers at Nanyang Technological University, Singapore (NTU Singapore) have developed a quantum communication chip that is 1,000 times smaller than current quantum setups, but offers the same superior... more
Scientists tame Josephson vortices  nanowerk · 2 weeks
Physicists have learned how to locally control Josephson vortices. The discovery can be used for quantum electronics superconducting devices and future quantum processors. more
Structured light promises path to faster, more secure communications  SCIENCE DAILY · 2 weeks
Quantum mechanics has come a long way during the past 100 years but still has a long way to go. Researchers now review the progress being made in using structured... more
Topological nanoelectronics  PHYS.ORG · 2 weeks
Topological insulators are materials with astonishing properties: Electric current flows only along their surfaces or edges, whereas the interior of the material behaves as an insulator. In 2007, Professor Laurens Molenkamp at Julius-Maximilians-Universität (JMU) Würzburg in Bavaria, Germany, was the... more
Topological nanoelectronics  nanowerk · 2 weeks
Physicists have succeeded for the first time in constructing an essential element a fundamentally new generation of electronic components - a Quantum Point Contact. more
Giving valleytronics a boost  SCIENCE DAILY · 2 weeks
Physicists have revealed a new quantum process in valleytronics that can speed up the development of this fairly new technology. more
New research finding gives valleytronics a boost  nanowerk · 2 weeks
An international research team has revealed a new quantum process in valleytronics that can speed up the development of this fairly new technology. more
Small magnets reveal big secrets  nanowerk · 2 weeks
An international research team has identified a microscopic process of electron spin dynamics in nanoparticles that could impact the design of applications in medicine, quantum computation, and spintronics. more
New research finding gives valleytronics a boost  PHYS.ORG · 2 weeks
An international research team led by physicists at the University of California, Riverside, has revealed a new quantum process in valleytronics that can speed up the development of this fairly new technology. more
These Weirdo Stellar Corpses Have Creamy Centers Filled with Exotic Quantum Liquids  LIVE SCIENCE · 2 weeks
Physicists have figured out what's lurking inside of white dwarfs, revealing the stellar corpses are creamy and filled with exotic quantum liquids. more
Small magnets: Wide-ranging impact on information technology  SCIENCE DAILY · 3 weeks
Physicists have identified a microscopic process of electron spin dynamics in nanoparticles that could impact the design of applications in medicine, quantum computation, and spintronics. more
Electrically control amplified spontaneous emission in colloidal quantum dots  Science Magazine · 3 weeks
Colloidal quantum dots (CQDs) are highly promising materials for light amplification thanks to their efficient photoluminescence, tunable emission wavelength and low-cost synthesis. Unfortunately, CQDs are suffering from band-edge state degeneracy... more
Small magnets reveal big secrets  PHYS.ORG · 3 weeks
An international research team led by a physicist at the University of California, Riverside, has identified a microscopic process of electron spin dynamics in nanoparticles that could impact the design of applications in medicine, quantum computation, and spintronics. more
What Google's 'quantum supremacy' means for the future of computing  PHYS.ORG · 3 weeks
For the first time ever, a quantum computer has performed a computational task that would be essentially impossible for a conventional computer to complete, according to a team... more
Researchers create blueprint for 'quantum battery' that doesn't lose charge  PHYS.ORG · 3 weeks
Scientists from the universities of Alberta and Toronto developed a blueprint for a new quantum battery that doesn't leak charge. more
Building single-atom qubits under a microscope  PHYS.ORG · 3 weeks
Our team at IBM Research made a breakthrough in controlling the quantum behavior of individual atoms, demonstrating a versatile new building block for quantum computation. more
Extracting hidden quantum information from a light source  SCIENCE DAILY · 3 weeks
Researchers report on a technique to extract the quantum information hidden in an image that carries both classical and quantum information. This technique opens a new pathway for quantum enhance microscopes that... more
Building single-atom qubits under a microscope  nanowerk · 3 weeks
Researchers made a breakthrough in controlling the quantum behavior of individual atoms, demonstrating a versatile new building block for quantum computation. more
Valleytronics in a monolayer semiconductor at room temperature  nanowerk · 3 weeks
The basic idea of valleytronics is to pass information through two-dimensional (2D) and other very thin conducting materials using the energy valleys - or energy extrema - in their conduction and valence... more
Coherent spin manipulation of individual atoms on a surface  Science Magazine · 3 weeks
Achieving time-domain control of quantum states with atomic-scale spatial resolution in nanostructures is a long-term goal in quantum nanoscience and spintronics. Here, we demonstrate coherent spin rotations of individual atoms... more
Google's Quantum Computer Just Aced an 'Impossible' Test  LIVE SCIENCE · 3 weeks
For the first time, a quantum computer has solved a task that Google says would be impossible for the most advanced supercomputers in the world. more
Extracting hidden quantum information from a light source  PHYS.ORG · 3 weeks
Current super-resolution microscopes or microarray laser scanning technologies are known for their high sensitivities and very good resolutions. However, they implement high light power to study samples, samples that can be light... more
Google unveils quantum computer breakthrough; critics say wait a qubit  REUTERS · 3 weeks
Alphabet Inc's Google said on Wednesday it had achieved a breakthrough in computing research by using... more
Google unveils computer with 'quantum supremacy', rivals say wait a qubit  REUTERS · 3 weeks
Alphabet Inc's Google said on Wednesday it achieved a breakthrough in computing research by... more
Achieving quantum supremacy  SCIENCE DAILY · 3 weeks
Researchers have made good on their claim to quantum supremacy. Using 53 entangled quantum bits ('qubits'), their Sycamore computer has taken on -- and solved -- a problem considered intractable for classical computers. more
'Molecular spintronics': New technology offers hope for quantum computing  PHYS.ORG · 3 weeks
Quantum computers, which work according to the strange rules of quantum mechanics, may one day revolutionize the world. Once we have managed to build a powerful working machine, it will... more
Unique properties of quantum material explained for first time  PHYS.ORG · 3 weeks
The characteristics of a new, iron-containing type of material that is thought to have future applications in nanotechnology and spintronics have been determined at Purdue University. more
Quantum leap in computing as scientists claim 'supremacy'  PHYS.ORG · 3 weeks
Scientists claimed Wednesday to have achieved a near-mythical state of computing in which a new generation of machine vastly outperforms the world's fastest super-computer, known as "quantum supremacy". more
IBM casts doubt on Google's claims of quantum supremacy  Science Magazine · 3 weeks
According to leaked paper, Google researchers have achieved milestone with number-generating computation more
Unique properties of quantum material explained for first time  nanowerk · 3 weeks
Scientists have determined characteristics of a new, iron-containing type of material that is thought to have future applications in nanotechnology and spintronics. more
Probing work and heat dissipation in the quantum Hall edges of graphene  PHYS.ORG · 3 weeks
Combining our nano-SQUID on tip with scanning gate measurements in the quantum Hall phase of graphene we were able to measure and identify work... more
Pushing quantum photonics  PHYS.ORG · 3 weeks
Quantum computers use the fundamentals of quantum mechanics to potentially speed up the process of solving complex computations. Suppose you need to perform the task of searching for a specific number in a phone book. A classical computer will search... more
A tiny cavity leads to a strong interaction between light and matter  SCIENCE DAILY · 3 weeks
Researchers have succeeded in creating an efficient quantum-mechanical light-matter interface using a microscopic cavity. Within this cavity, a single photon is emitted and absorbed... more
A cavity leads to a strong interaction between light and matter  nanowerk · 3 weeks
Researchers have succeeded in creating an efficient quantum-mechanical light-matter interface using a microscopic cavity. Within this cavity, a single photon is emitted and absorbed up to... more
A cavity leads to a strong interaction between light and matter  PHYS.ORG · 3 weeks
Researchers have succeeded in creating an efficient quantum-mechanical light-matter interface using a microscopic cavity. Within this cavity, a single photon is emitted and absorbed up to... more
Researchers watch quantum knots untie  SCIENCE DAILY · 3 weeks
A quantum gas can be tied into knots using magnetic fields. The same researchers who were the first to produce these knots have now studied how the knots behave over time. The surprising result is that the knots... more
Researchers watch quantum knots untie  PHYS.ORG · 3 weeks
A quantum gas can be tied into knots using magnetic fields. Our researchers were the first to produce these knots as part of a collaboration between Aalto University and Amherst College, U.S., and they have now studied how... more
Quantum image distillation  Science Magazine · 4 weeks
Imaging with quantum states of light promises advantages over classical approaches in terms of resolution, signal-to-noise ratio, and sensitivity. However, quantum detectors are particularly sensitive sources of classical noise that can reduce or cancel any quantum advantage in the final... more
Nontrivial quantum oscillation geometric phase shift in a trivial band  Science Magazine · 4 weeks
Quantum oscillations provide a notable visualization of the Fermi surface of metals, including associated geometrical phases such as Berry’s phase, that play a central role in topological quantum... more
Training of quantum circuits on a hybrid quantum computer  Science Magazine · 4 weeks
Generative modeling is a flavor of machine learning with applications ranging from computer vision to chemical design. It is expected to be one of the techniques most suited to take... more
Novel excitations near quantum criticality in geometrically frustrated antiferromagnet CsFeCl3  Science Magazine · 4 weeks
The investigation of materials that exhibit quantum phase transition provides valuable insights into fundamental problems in physics. We present neutron scattering under pressure in a triangular-lattice antiferromagnet that... more
Quantum spacetime on a quantum simulator  PHYS.ORG · 4 weeks
Quantum simulation plays an irreplaceable role in diverse fields, beyond the scope of classical computers. In a recent study, Keren Li and an interdisciplinary research team at the Center for Quantum Computing, Quantum Science and Engineering... more
Surfing on waves in a one-dimensional quantum liquid  PHYS.ORG · 4 weeks
Physicists from the University of Luxembourg, together with international collaborators, have recently published an article in the internationally renowned journal Physical Review Letters. In this article, they demonstrate how quantum-mechanical interference effects... more
Big data technique reveals previously unknown capabilities of common materials  SCIENCE DAILY · 4 weeks
Researchers have found a new way to optimize nickel by unlocking properties that could enable numerous applications, from biosensors to quantum computing. more
Blanket of light may give better quantum computers  SCIENCE DAILY · 4 weeks
Researchers describe how -- by simple means -- they have created a 'carpet' of thousands of quantum-mechanically entangled light pulses. The discovery has the potential to pave the way for more powerful... more
Weaving quantum processors out of laser light  SCIENCE DAILY · 4 weeks
Researchers open a new avenue to quantum computing with a breakthrough experiment: a large-scale quantum processor made entirely of light. more
Deterministic generation of a two-dimensional cluster state  Science Magazine · 4 weeks
Measurement-based quantum computation offers exponential computational speed-up through simple measurements on a large entangled cluster state. We propose and demonstrate a scalable scheme for the generation of photonic cluster states suitable for universal measurement-based... more
Generation of time-domain-multiplexed two-dimensional cluster state  Science Magazine · 4 weeks
Entanglement is the key resource for measurement-based quantum computing. It is stored in quantum states known as cluster states, which are prepared offline and enable quantum computing by means of purely local measurements. Universal quantum computing... more
Weaving quantum processors out of laser light  PHYS.ORG · 4 weeks
An international team of scientists from Australia, Japan and the United States has produced a prototype of a large-scale quantum processor made of laser light. more
Blanket of light may give better quantum computers  PHYS.ORG · 4 weeks
Quantum mechanics is one of the most successful theories of natural science, and although its predictions are often counterintuitive, not a single experiment has been conducted to date of which the theory... more
Ultrafast particle interactions could make quantum information devices feasible  PHYS.ORG · 4 weeks
Energy is information. Lengthening the time during which a system is capable of retaining energy before losing it to the local environment is a key goal for the development of... more
Scientists discover fractal patterns in a quantum material  PHYS.ORG · 4 weeks
A fractal is any geometric pattern that occurs again and again, at different sizes and scales, within the same object. This "self-similarity" can be seen throughout nature, for example in a snowflake's... more
Scientists discover fractal patterns in a quantum material  MIT · 4 weeks
The X-ray-focusing lens used in the experiment is based on a design used in lighthouses for centuries. more
Ultrafast particle interactions could help make quantum information devices feasible  nanowerk · 4 weeks
Research presents the detection of energy transfer from excited electrons to the crystal lattice on the femtosecond timescale. Knowledge could contribute to the development of materials that prolong... more
Scientists discover method to create and trap trions at room temperature  nanowerk · 4 weeks
Scientists chemically engineered carbon nanotubes to synthesize and trap trions -- quasi-particles potentially useful in bioimaging, chemical sensing and quantum computing. more
Quantum dots technology to revolutionize healthcare and sensing technology: see what's invisible  nanowerk · 4 weeks
Researchers have invented a new method of producing ultra-sensitive hyper-spectral photodetectors. At the heart of the discovery are colloidal quantum dots. more
Creating and trapping trions at room temperature  SCIENCE DAILY · 4 weeks
A team chemically engineered carbon nanotubes to synthesize and trap trions at room temperature. Trions are quasi particles that can potentially carry more information than electrons in applications from bioimaging to chemical sensing and... more
Quantum dots technology to revolutionize healthcare and sensing technology  PHYS.ORG · 4 weeks
Researchers of the Optoelectronics and Measurement Techniques Unit (OPEM) at the University of Oulu have invented a new method of producing ultra-sensitive hyper-spectral photodetectors. At the heart of the discovery... more
Cryptography without using secret keys  PHYS.ORG · 4 weeks
Most security applications, for instance, access to buildings or digital signatures, use cryptographic keys that must at all costs be kept secret. That also is the weak link: Who will guarantee that the key doesn't get stolen or... more
Scientists discover method to create and trap trions at room temperature  PHYS.ORG · 4 weeks
Trions consist of three charged particles bound together by very weak bonding energy. Although trions can potentially carry more information than electrons in applications such as... more
Quantum physics: Ménage à trois photon-style  PHYS.ORG · 4 weeks
Entanglement is one of the properties specific to quantum particles. When two photons become entangled, for instance, the quantum state of the first will correlate perfectly with the quantum state of the second, even if they... more
Solving the mystery of quantum light in thin layers  PHYS.ORG · 4 weeks
When a current is applied to a thin layer of tungsten diselenide, it begins to glow in a highly unusual fashion. In addition to ordinary light, which other semiconductor materials... more
Solving the mystery of quantum light in thin layers  SCIENCE DAILY · 4 weeks
Tungsten diselenide emits light with very special properties. Nobody could tell why -- but now, scientists have solved the riddle: a combination of atomic defects in the material and microscopic... more
Researchers Control Quantum State of Single Electron Using High-Frequency Sound Waves  SCI-NEWS.COM · 4 weeks
An international team of scientists sent high-frequency sound waves across a modified semiconductor device... more
Diversity may be key to reducing errors in quantum computing  SCIENCE DAILY · 4 weeks
In quantum computing, as in team building, a little diversity can help get the job done better, computer scientists have discovered. more
Controlling the charge state of organic molecule quantum dots in a 2D nanoarray  SCIENCE DAILY · 4 weeks
Researchers have fabricated a self-assembled, carbon-based nanofilm where the charge state (ie, electronically neutral or positive) can be controlled at the level... more
Quantum dots that light up TVs could be used for brain research  PHYS.ORG · 4 weeks
While many people love colorful photos of landscapes, flowers or rainbows, some biomedical researchers treasure vivid images on a much smaller scale—as tiny as... more
Diversity may be key to reducing errors in quantum computing  PHYS.ORG · 4 weeks
In quantum computing, as in team building, a little diversity can help get the job done better, computer scientists have discovered. more
Quantum paradox experiment may lead to more accurate clocks and sensors  SCIENCE DAILY · 4 weeks
More accurate clocks and sensors may result from a recently proposed experiment, linking an Einstein-devised paradox to quantum mechanics. A physicist said the international collaboration aimed... more
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