Quantum Mechanics
New 'refrigerator' super-cools molecules to nanokelvin temperatures  PHYS.ORG · 33 minutes
For years, scientists have looked for ways to cool molecules down to ultracold temperatures, at which point the molecules should slow to a crawl, allowing scientists to precisely control their quantum behavior. This could... more
First successful laser trapping of circular Rydberg atoms  PHYS.ORG · 1 hour
Rydberg atoms, which are atoms in a highly excited state, have several unique and advantageous properties, including a particularly long lifetime and large sensitivities to external fields. These properties make them valuable... more
Condensed matter: Bethe strings experimentally observed  SCIENCE DAILY · 19 hours
90 years ago, the physicist Hans Bethe postulated that unusual patterns, so-called Bethe strings, appear in certain magnetic solids. Now an international team has succeeded in experimentally detecting such Bethe strings for the first time. They... more
Antibiotic matter waves: The quantum wave nature of a complex antibiotic polypeptide  PHYS.ORG · 1 day
One of the central tenets of quantum mechanics is the wave-particle duality. It tells us that even massive objects behave like both particles and... more
Search for new state of matter expanded  SCIENCE DAILY · 1 day
Scientists have been striving to establish the existence of quantum spin liquids, a new state of matter, since the 1970s. A recent discovery physicists could help researchers solve the mystery and result in the... more
Researchers report new understanding of energy fluctuations in fluids  PHYS.ORG · 2 days
The Casimir Force is a well-known effect originating from the quantum fluctuation of electromagnetic fields in a vacuum. Now an international group of researchers have reported a counterpoint to that... more
Nonreciprocal transport in the gate-induced strontium titanate polar superconductor  PHYS.ORG · 2 days
In materials science, two-dimensional electron systems (2DES) realized at the oxide surface or interface are a promising candidate to achieve novel physical properties and functionalities in a rapidly emerging quantum... more
New understanding of energy fluctuations in fluids  SCIENCE DAILY · 2 days
The Casimir Force is a well-known effect originating from the quantum fluctuation of electromagnetic fields in a vacuum. Now an international group of researchers have reported a counterpoint to that theory, adding to the... more
A twist connecting magnetism and electronic-band topology  PHYS.ORG · 2 days
Materials that combine topological electronic properties and quantum magnetism are of high interest for the quantum many-body physics they exhibit and for possible applications in electronic components. ETH physicists have now established the microscopic... more
Researchers expand search for new state of matter  PHYS.ORG · 2 days
A recent discovery by University of Arkansas physicists could help researchers establish the existence of quantum spin liquids, a new state of matter. They've been a mystery since they were first proposed... more
Quantum biology revisited  Science Magazine · 5 days
Photosynthesis is a highly optimized process from which valuable lessons can be learned about the operating principles in nature. Its primary steps involve energy transport operating near theoretical quantum limits in efficiency. Recently, extensive research was motivated by the hypothesis... more
Direct observation of minibands in a twisted graphene/WS2 bilayer  Science Magazine · 5 days
Stacking two-dimensional (2D) van der Waals materials with different interlayer atomic registry in a heterobilayer causes the formation of a long-range periodic superlattice that may bestow the heterostructure with properties... more
Quantum computation solves a half-century-old enigma: Elusive vibrational states of magnesium dimer found  Science Magazine · 5 days
The high-lying vibrational states of the magnesium dimer (Mg2), which has been recognized as an important system in studies of ultracold and... more
A twist connecting magnetism and electronic-band topology  SCIENCE DAILY · 5 days
Materials that combine topological electronic properties and quantum magnetism are of high current interest, for the quantum many-body physics that can unfold in them and for possible applications in electronic components. For one such... more
Does relativity lie at the source of quantum exoticism?  PHYS.ORG · 6 days
Since its beginnings, quantum mechanics hasn't ceased to amaze us with its peculiarity, so difficult to understand. Why does one particle seem to pass through two slits simultaneously? Why, instead... more
Making the invisible visible: Entangled photons for imaging and measurement techniques  PHYS.ORG · 6 days
Entangled photons can be used to improve imaging and measurement techniques. A team of researchers from the Fraunhofer Institute for Applied Optics and Precision Engineering IOF... more
Scientists tap into AI to put a new spin on neutron experiments  PHYS.ORG · 6 days
Scientists seek to use quantum materials—those that have correlated order at the subatomic level—for electronic devices, quantum computers, and superconductors. Quantum materials owe many... more
D-Wave Systems offers free quantum cloud access to those working on COVID-19 response  NEWS MEDICAL · 1 week
D-Wave Systems Inc., the leader in quantum computing systems, software, and services, today announced the immediate availability of free access to its... more
New quantum technology could help diagnose and treat heart condition  SCIENCE DAILY · 1 week
The conductivity of living organs, such as the heart, could be imaged non-invasively using quantum technology, which has the potential to revolutionize the diagnosis and treatment of atrial... more
New paradigm for 'auto-tuning' quantum bits could overcome major engineering hurdle  PHYS.ORG · 1 week
A high-end race car engine needs all its components tuned and working together precisely to deliver top-quality performance. The same can be said about the processor... more
Quantum-entangled light from a vibrating membrane  PHYS.ORG · 1 week
Entanglement, a powerful form of correlation among quantum systems, is an important resource for quantum computing. Researchers from the Quantum Optomechanics group at the Niels Bohr Institute, University of Copenhagen, recently entangled two laser beams through... more
New quantum technology could help diagnose and treat heart condition  PHYS.ORG · 1 week
Atrial fibrillation (AF) is a heart condition that causes an irregular and abnormally fast heart rate, potentially leading to blood clots, stroke, heart failure and other heart-related complications.... more
A new search for axiom dark matter rules out past numerical predictions  PHYS.ORG · 1 week
The ADMX collaboration, a group of researchers working at universities across the U.S. and Europe, has recently performed a new search for invisible axion... more
Tiny optical cavity could make quantum networks possible  PHYS.ORG · 1 week
Engineers at Caltech have shown that atoms in optical cavities—tiny boxes for light—could be foundational to the creation of a quantum internet. Their work was published on March 30 by the journal... more
Tiny optical cavity could make quantum networks possible  SCIENCE DAILY · 1 week
Engineers have shown that atoms in optical cavities could be foundational to the creation of a quantum internet. more
Physicists develop new photon source for tap-proof communication  PHYS.ORG · 1 week
An international team with the participation of Prof. Dr. Michael Kues from the Cluster of Excellence PhoenixD at Leibniz University Hannover has developed a new method for generating quantum-entangled photons in a... more
Quantum copycat: Researchers find a new way in which bosons behave like fermions  PHYS.ORG · 2 weeks
Bosons and fermions, the two classes into which all particles—from the sub-atomic to atoms themselves—can be sorted, behave very differently under most... more
Quantum copycat: Researchers find a new way in which bosons behave like fermions  SCIENCE DAILY · 2 weeks
When a one-dimensional gas of strongly interacting bosons expands, the velocity distribution of the bosons transforms into one that is identical to... more
Nonreciprocal transport in gate-induced polar superconductor SrTiO3  Science Magazine · 2 weeks
Polar conductors/superconductors with Rashba-type spin-orbit interaction are potential material platforms for quantum transport and spintronic functionalities. One of their inherent properties is the nonreciprocal transport, where the rightward and leftward currents become inequivalent, reflecting... more
Two-photon quantum interference and entanglement at 2.1 {mu}m  Science Magazine · 2 weeks
Quantum-enhanced optical systems operating within the 2- to 2.5-μm spectral region have the potential to revolutionize emerging applications in communications, sensing, and metrology. However, to date, sources of entangled photons have been... more
High-frequency rectification via chiral Bloch electrons  Science Magazine · 2 weeks
Rectification is a process that converts electromagnetic fields into a direct current. Such a process underlies a wide range of technologies such as wireless communication, wireless charging, energy harvesting, and infrared detection. Existing rectifiers are mostly... more
Demonstration of a third-order hierarchy of topological states in a three-dimensional acoustic metamaterial  Science Magazine · 2 weeks
Classical wave systems have constituted an excellent platform for emulating complex quantum phenomena, such as demonstrating topological phenomena in photonics and acoustics.... more
Researchers catch light in a funnel  PHYS.ORG · 2 weeks
Professor Ronny Thomale holds a chair for theoretical condensed matter physics, the TP1, at the Julius-Maximilian University of Würzburg. The discovery and theoretical description of new quantum states of matter is a prime objective of his... more
Optimizing efficiency of quantum circuits  PHYS.ORG · 2 weeks
Quantum circuits, the building blocks of quantum computers, use quantum mechanical effects to perform tasks. They are much faster and more accurate than the classical circuits that are found in electronic devices today. In reality, however, no quantum... more
Quantum phenomenon governs organic solar cells  SCIENCE DAILY · 2 weeks
Researchers have discovered a quantum phenomenon that influences the formation of free charges in organic solar cells. more
Quantum phenomenon governs organic solar cells  nanowerk · 2 weeks
Vibronic coherence contributes to photocurrent generation in organic semiconductor heterojunction diodes. more
Quantum effect triggers unusual material expansion  SCIENCE DAILY · 2 weeks
New research may bring a whole new class of chemical elements into a materials science balancing act for designing alloys for aviation and other applications. more
Quantum effect triggers unusual material expansion  PHYS.ORG · 2 weeks
You know how you leave space in a water bottle before you pop it in the freezer—to accommodate the fact that water expands as it freezes? Most metal parts in airplanes face the more common opposite... more
Flux-induced topological superconductivity in full-shell nanowires  Science Magazine · 2 weeks
Hybrid semiconductor-superconductor nanowires have emerged as a promising platform for realizing topological superconductivity (TSC). Here, we present a route to TSC using magnetic flux applied to a full superconducting shell surrounding a semiconducting nanowire core. Tunneling... more
Frequency-comb spectroscopy on pure quantum states of a single molecular ion  Science Magazine · 2 weeks
Spectroscopy is a powerful tool for studying molecules and is commonly performed on large thermal molecular ensembles that are perturbed by motional shifts and interactions with... more
Quantum phenomenon governs organic solar cells  PHYS.ORG · 2 weeks
Researchers at Linköping University have discovered a quantum phenomenon that influences the formation of free charges in organic solar cells. "If we can properly understand what's going on, we can increase the efficiency," says Olle Inganäs,... more
A new method for the fabrication and characterization of atomic-sized photonic cavities  nanowerk · 2 weeks
This discovery may be fundamental for the understanding and design of new, nanometric size, opto-electronic devices which will be key for the development of... more
Zero-energy bound states in the high-temperature superconductors at the two-dimensional limit  Science Magazine · 2 weeks
Majorana zero modes (MZMs) that obey the non-Abelian statistics have been intensively investigated for potential applications in topological quantum computing. The prevailing signals in tunneling experiments... more
Is nonlocality inherent in all identical particles in the universe?  PHYS.ORG · 2 weeks
What is interaction, and when does it occur? Intuition suggests that the necessary condition for the interaction of independently created particles is their direct touch or contact through... more
Scientists develop platform for building nanoelectronics and quantum processors  PHYS.ORG · 2 weeks
Scientists of Far Eastern Federal University (FEFU, Vladivostok, Russia) together with colleagues from the Chinese Academy of Sciences (Beijing) have designed a platinum-cobalt-magnesium oxide microstructure coated by platinum that is... more
A key development in the drive for energy-efficient electronics  nanowerk · 2 weeks
Scientists have made a breakthrough in the development of a new generation of electronics that will require less power and generate less heat. It involves exploiting the complex quantum properties... more
Researchers demonstrate the missing link for a quantum internet  PHYS.ORG · 2 weeks
A quantum internet could be used to send unhackable messages, improve the accuracy of GPS, and enable cloud-based quantum computing. For more than twenty years, dreams of creating such a... more
The growth of an organism rides on a pattern of waves  MIT · 2 weeks
Study shows ripples across a newly fertilized egg are similar to other systems, from ocean and atmospheric circulations to quantum fluids. more
Researchers observe ultrafast processes of single molecules for the first time  PHYS.ORG · 2 weeks
Markus Koch, head of the research group Femtosecond Dynamics at the Institute of Experimental Physics at TU Graz, and his team develop new methods for time-resolved... more
Protecting quantum entanglement from leakage and qubit errors via repetitive parity measurements  Science Magazine · 3 weeks
Protecting quantum information from errors is essential for large-scale quantum computation. Quantum error correction (QEC) encodes information in entangled states of many qubits and... more
Surface-state Coulomb repulsion accelerates a metal-insulator transition in topological semimetal nanofilms  Science Magazine · 3 weeks
The emergence of quantization at the nanoscale, the quantum size effect (QSE), allows flexible control of matter and is a rich source of advanced functionalities. A... more
Scientists propose new approach to measuring atoms  PHYS.ORG · 3 weeks
Today, when new drugs are designed with the help of supercomputers, and electronic devices operate on a nanoscale, it is very important for scientists to understand how neighboring molecules behave towards each other. For... more
One-kilometer breakthrough made in quantum field  PHYS.ORG · 3 weeks
A team led by Prof. Guo Guangcan from University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) and collaborators first realized distribution of high-dimensional orbital angular momentum entanglement over a... more
Innovative new fabrication approach for reprogrammable photonic circuits  PHYS.ORG · 3 weeks
Modern society relies on technologies with electronic integrated circuits (IC) at their heart, but these may prove to be less suitable in future applications such as quantum computing and environmental sensing. Photonic... more
Scientists create quantum sensor that covers entire radio frequency spectrum  PHYS.ORG · 3 weeks
A quantum sensor could give Soldiers a way to detect communication signals over the entire radio frequency spectrum, from 0 to 100 GHz, said researchers from the Army. more
Chip-based devices improve practicality of quantum-secured communication  SCIENCE DAILY · 3 weeks
Researchers have demonstrated new chip-based devices that contain all the optical components necessary for quantum key distribution while increasing real-world security. The fast and cost-effective platform is poised to facilitate implementation of extremely secure... more
Chip-based devices improve practicality of quantum-secured communication  PHYS.ORG · 3 weeks
monstrated new chip-based devices that contain allthe optical components necessary for quantum key distribution while increasing real-world security. The fast and cost-effective platform is poised to facilitate implementation of extremely secure data communication that... more
Researchers demonstrate first terahertz quantum sensing  PHYS.ORG · 3 weeks
Quantum physicists rely on quantum sensing as a highly attractive method to access spectral regions and detect photons (tiny packets of light) that are generally technically challenging. They can gather sample information in the spectral region... more
Model simulator helps researchers map complex physics phenomena  PHYS.ORG · 3 weeks
To understand the behavior of quantum particles, imagine a pinball game—but rather than one metal ball, there are billions or more, all ricocheting off each other and their surroundings. more
Frozen-planet states in exotic helium atoms  PHYS.ORG · 3 weeks
Exotic subatomic particles that are like 'normal' particles apart from one, opposite, property—such as the positron, which is like an electron but positively rather than negatively charged—are collectively known as antimatter. Direct studies of collisions between... more
The imitation game: Scientists describe and emulate new quantum state of entangled photons  PHYS.ORG · 3 weeks
A research team from ITMO University, with the help of colleagues from MIPT (Russia) and Politecnico di Torino (Italy), has predicted a... more
Study unveils gapless ground state in an archetypal quantum kagome  PHYS.ORG · 3 weeks
At low enough temperatures, magnetic systems typically become solid crystals. A renowned phenomenon through which this happens is ferromagnetism, occurring when all elementary moments or spins interact at... more
Researchers set benchmark to determine achievement of quantum computing  PHYS.ORG · 3 weeks
The race toward the first practical quantum computer is in full stride. Companies, countries, collaborators, and competitors worldwide are vying for quantum supremacy. Google says it's already there. But what... more
Machine learning to scale up the quantum computer  PHYS.ORG · 3 weeks
,,Quantum computers are expected to offer tremendous computational power for complex problems –currently intractable even on supercomputers—in the areas of drug design, data science, astronomy and materials chemistry among others. more
Qubits that operate at room temperature  PHYS.ORG · 3 weeks
Scientists from NUST MISIS (Russia) together with colleagues from Sweden, Hungary and U.S., found a way to manufacture stable qubits that operate at room temperature, in contrast to the majority of existing analogues. This opens up... more
Terahertz quantum sensing  Science Magazine · 4 weeks
Quantum sensing is highly attractive for accessing spectral regions in which the detection of photons is technically challenging: Sample information is gained in the spectral region of interest and transferred via biphoton correlations into another spectral range, for which highly... more
The electronic thickness of graphene  Science Magazine · 4 weeks
When two dimensional crystals are atomically close, their finite thickness becomes relevant. Using transport measurements, we investigate the electrostatics of two graphene layers, twisted by = 22° such that the layers are decoupled by the huge momentum mismatch... more
Discovery of zero-energy bound states at both ends of a one-dimensional atomic line defect  PHYS.ORG · 4 weeks
In recent years, the development of quantum computers beyond the capability of classical computers has become a new frontier in... more
Initialization of quantum simulators by sympathetic cooling  PHYS.ORG · 4 weeks
Simulating computationally complex many-body problems on a quantum simulator has great potential to deliver insights into physical, chemical and biological systems. Physicists had previously implemented Hamiltonian dynamics but the problem of initiating quantum simulators... more
Perturbation-free studies of single molecules  SCIENCE DAILY · 4 weeks
Researchers of the University of Basel have developed a new method with which individual isolated molecules can be studied precisely -- without destroying the molecule or even influencing its quantum state. This highly sensitive technique for probing molecules... more
Quantum-nondemolition state detection and spectroscopy of single trapped molecules  Science Magazine · 4 weeks
Trapped atoms and ions, which are among the best-controlled quantum systems, find widespread applications in quantum science. For molecules, a similar degree of control is currently lacking owing to their... more
Perturbation-free studies of single molecules  PHYS.ORG · 4 weeks
Researchers of the University of Basel have developed a new method with which individual isolated molecules can be studied precisely—without destroying the molecule or even influencing its quantum state. This highly sensitive technique for probing molecules is widely... more
For the first time, scientists observe the elusive Kondo screening cloud  nanowerk · 4 weeks
An international research group has ended a fifty-year quest by directly observing a quantum phenomenon known as a Kondo screening cloud. This phenomenon, which is important... more
Researchers quantify disorder in 2D materials to build better quantum technologies  nanowerk · 4 weeks
Scientists have combined experimental and theoretical techniques to measure atomic positions of all the atoms in a 2D material and calculate how the arrangement impacts the... more
Engineers crack 58-year-old puzzle on way to quantum breakthrough  PHYS.ORG · 4 weeks
A happy accident in the laboratory has led to a breakthrough discovery that not only solved a problem that stood for more than half a century, but has major implications... more
World's first experimental observation of a Kondo cloud  PHYS.ORG · 4 weeks
Physicists have been trying to observe the Kondo cloud quantum phenomenon for many decades. An international research team including a scientist from City University of Hong Kong (CityU) has recently developed a... more
Novel error-correction scheme developed for quantum computers  PHYS.ORG · 4 weeks
Scientists in Australia have developed a new approach to reducing the errors that plague experimental quantum computers; a step that could remove a critical roadblock preventing them scaling up to full working machines. more
Bilayer graphene double quantum dots tune in for single-electron control  PHYS.ORG · 4 weeks
The first demonstration of graphene double quantum dots in which it is possible to control the number of electrons down to zero has been reported in Nano Letters.... more
Magnetic teeth revealed using quantum imaging  PHYS.ORG · 4 weeks
Biology provides us with a constant source of inspiration for designing and exploring new functional materials. more
Two-dimensional metals open pathways to new science  PHYS.ORG · 4 weeks
An atomically thin materials platform developed by Penn State researchers in conjunction with Lawrence Berkeley National Lab and Oak Ridge National Lab will open a wide range of new applications in biomolecular sensing, quantum... more
Two-dimensional metals open pathways to new science  nanowerk · 4 weeks
A new, atomically-thin materials platform will open a wide range of new applications in biomolecular sensing, quantum phenomena, catalysis and nonlinear optics. more
Study achieves a new record fiber QKD transmission distance of over 509 km  PHYS.ORG · 1 month
The sending-or-not-sending twin-field (SNS-TF) protocol has so far proved to be a highly promising strategy for achieving high rates over long distances... more
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