Articles tagged with Quantum Measurement
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A new quantum classifier introduces a tailored quantum kernel, outperforming AI technology and enhancing classification tasks with small datasets. The method exploits the quantum advantage in finding non-linear features, leading to significant improvements.
Researchers have created a metal-like quantum gas by exciting electrons in ultracold rubidium atoms, allowing for ultrafast simulation of many-body electron dynamics. The exotic phase has the potential to enhance our understanding of physical properties like superconductivity and magnetism.
Physicists from Martin Luther University Halle-Wittenberg propose a new theory to describe Bose-Einstein condensates, overcoming complex equations and models. The new method simplifies interactions between particles in the condensate, enabling accurate predictions of their behavior.
Researchers at MSU solved the long-standing enigma of the magnesium dimer's high-lying vibrational states using advanced computational methods. The team's findings, published in Science Advances, provide new insights into the molecule's behavior and pave the way for future experimental studies.
Researchers at Heidelberg University have successfully constructed the symmetries of quantum electrodynamics using ultracold atoms. The findings could lead to the development of large-scale quantum devices capable of simulating complex physical phenomena.
Researchers have developed a new approach to speed up trapped ion quantum computing using giant Rydberg ions, increasing computational capacity exponentially. The experimental work confirms that the system can scale up without slowdowns, enabling large-scale quantum computation.
Researchers from ITMO University developed a new statistical analysis method to determine the size of atoms with high accuracy. This approach enables precise data on intermolecular interactions, crucial for assessing drug-protein binding and molecular structure.
Researchers directly observed a Kondo screening cloud, a quantum phenomenon that masks magnetic impurities in materials. The study confirmed theoretical predictions and provided insights into the spatial extension of the cloud, which is universally scaled by the inverse of the Kondo temperature.
Researchers created a 'film' of a single atom's measurement process, showing that the state changes gradually over time. This study provides new insights into the inner workings of nature and sheds light on the predictions of modern quantum physics.
Researchers at USTC enhance quantum orienteering using entangling measurements via photonic quantum walks, achieving unprecedented efficiency. The method demonstrates a nonclassical phenomenon due to entanglement in quantum measurements, offering an effective recipe for realizing entangling measurements.
Researchers successfully measured the full quantum geometric tensor in a solid-state spin system using coupled qubits in diamond. The technique enables precise measurement of the tensor's matrix elements, including Berry curvature and Riemannian metric.
Researchers at the University of British Columbia have demonstrated a new way to control electrical currents in materials by leveraging electron spin and orbital rotation. This breakthrough enables metal-insulator transitions, which could lead to new electronic, magnetic, and sensing applications.
Researchers simulate condensate behavior during inflationary period, revealing gravitational disintegration mechanism. The simulation provides new insights into the formation of dark matter and potential predictions for cosmological observables.
Researchers have recorded how electrons interact with atomic vibrations in solids, capturing the processes that cause electrical resistance and superconductivity. The study enables visualization of dynamic properties of quantum materials, shedding light on high-temperature superconductivity and other phenomena.
Scientists from Hiroshima University and Indian Institute of Technology Bombay have found a way to determine the state of a quantum system by analyzing data from outside the system. By carefully reading the quantum data, they can restore the initial superposition of possible outcomes.
Researchers at Stevens Institute of Technology have developed a nano-scale chip that facilitates photon interactions with much higher efficiency than any previous system. The breakthrough could enable the creation of powerful quantum computing components such as photonics logic gates and entanglement sources.
Researchers at LMU Munich and the Max Planck Institute of Quantum Optics successfully simulated a specific lattice gauge theory using two-component ultracold bosons in optical superlattices. The study provided a controlled view of fundamental physical phenomena, including the interactions between particles mediated by gauge fields.
Researchers have made substantial progress in engineering quantized gauge fields coupled to ultracold matter, a versatile platform for tackling complex problems in physics. By controlling the Peierls phase, neutral atoms can mimic charged particles moving in magnetic fields.
The NIST team has upgraded their compact atomic gyroscope to enable simultaneous measurement of rotation, rotation angle and acceleration with a single source of atoms. The instrument's sensitivities for the magnitude and direction of the rotation measurements are approaching those achieved by other research groups using larger atom in...
Scientists observe a break in a single quantum system for the first time, potentially revolutionizing our understanding of quantum interactions. By manipulating the symmetry of the system, researchers can control and predict outcomes, opening doors to exotic physics.
Nagoya University researchers have successfully synthesized plumbene, a lead-based 2D material that exhibits the largest spin-orbit interaction among its cousins. The discovery was achieved through epitaxial growth on a palladium substrate, revealing a honeycomb structure with potential applications in topological insulators and quantu...
Researchers have created a sensor that can measure and image magnetic structures at the atomic scale, enabling new directions in atomic-scale research. The sensor uses a single molecule magnet as a scanning magnetometer to detect spin-spin interactions between molecules.
Researchers at the University of Otago successfully interact two individual atoms in a controlled setting, showcasing potential for new quantum technologies. This achievement represents a significant step towards creating robust entanglement technology.
JILA researchers have made a long-lived, record-cold gas of molecules that follow the wave patterns of quantum mechanics. The creation of this gas boosts the odds for advances in fields such as designer chemistry and quantum computing.
Researchers measured hundreds of individual quantum energy levels in the buckyball, revealing its intricate structure and enabling new insights into extreme quantum complexity. The findings have potential applications in quantum computing and astrophysics.
Researchers at USTC successfully observe scattering resonances between atoms and molecules at ultralow temperatures, advancing ultracold polar molecules and chemical physics. The new insights aid in designing high precision clocks, powerful microscopes, and quantum computers.
A team of researchers has successfully created a Bose-Einstein condensate of Dysprosium and Erbium atoms, demonstrating quantum degeneracy of these species. This achievement opens up novel research possibilities for dipolar quantum matter due to the long-range interaction among the two species.
Researchers Nathaniel Gabor and Justin C. W. Song propose a new field of study, electron quantum metamaterials, which involves manipulating electrons in subwavelength structures to exhibit unusual behavior. This field has the potential to produce radically new phenomena, such as superconductivity in twisted bilayer graphene.
Researchers have made a major scientific breakthrough by detecting nuclear magnetism in single atoms on surfaces for the first time. The discovery uses advanced techniques to measure the nuclear spin of individual atoms, enabling identification of different isotopes atom by atom.
Researchers have developed measurement-device-independent quantum communication without encryption, eliminating key security loopholes. This protocol uses Einstein-Podolsky-Rosen pairs to ensure secure communication over long distances and high capacities.
A team of scientists has found evidence of hydrodynamic electron flow in semimetal tungsten diphosphide, a high-purity quantum material. The discovery reveals the strongly interacting nature of electrons in these materials and suggests that the conversion of energy into thermal energy is limited by quantum mechanics.
Researchers at Rice University have discovered the first example of Dicke cooperativity in a matter-matter system, which could lead to faster information processing and lower power consumption. The discovery uses a magnetic field to prompt cooperativity among spins within a crystalline compound made primarily of iron and erbium.
The study demonstrates an interaction between a qubit and surface acoustic waves in the quantum regime, enabling an alternative approach to quantum computer design. This allows for smaller, more stable, and compact quantum computers without the limitations of microwave radiation.
Alessandro Baroni's thesis work using chiral effective field theory has characterized neutrino interactions with nuclei at low energy. His calculations combined theoretical framework and ab initio computational methods, leading to results in agreement with previous phenomenological calculations.
Researchers at Purdue University have discovered a way to manipulate the interaction between paired and lined-up electrons in semiconductors. This finding has potential implications for electronic devices and quantum computing, as it allows for the tuning of electron-electron interactions and the control of phase transitions.
Researchers from Purdue University and the Technological University of Delft have discovered enhanced spin-orbit interaction in silicon, allowing for easier manipulation of qubits using electric fields. This enables the creation of silicon quantum computer chips with millions of qubits, leading to high-speed information processing and ...
Physicists use powerful supercomputers to solve quantum chromodynamics equations, which governs how quarks and gluons interact within neutrons. The new calculation yields the highest-ever precision of nucleon axial coupling, a property that determines the strength of neutron decay into protons.
Researchers have successfully observed the quantum mechanical Einstein-Podolsky-Rosen paradox in a system of several hundred interacting atoms, demonstrating precise predictions of measurement results. This breakthrough has implications for new sensors and imaging methods for electromagnetic fields.
Researchers use ultra-cold neutral lithium atoms to study conductivity in a one-dimensional quantum tube. They discover an unusual state of matter that retains its insulation regardless of particle interactions, challenging conventional theories about materials.
TU Dresden researchers refined their method for studying organic semiconductors by collaborating with experimentalists to compare simulations to spectroscopy experiments. The team simulated materials like C60 and zinc phthalocyanine, finding good agreement between simulations and experimental observations.
JILA scientists invent a novel imaging technique that combines spectroscopy and high-resolution microscopy to create rapid, precise measurements of quantum behavior. The technique produces detailed spatial maps of energy shifts among atoms in a three-dimensional lattice, providing information about each atom's location and energy level.
Researchers observe groups of three photons interacting, forming a new kind of photonic matter. The bound photons acquire mass and travel slower than non-interacting photons.
A team of researchers has successfully controlled multiple quantum mechanical properties in a single material, including ferroelectricity and conductivity. The breakthrough could lead to the development of ultrafast, low-power electronics and quantum computers.
Scientists have developed quantum simulators that can control over 50 interacting atomic qubits, mimicking magnetic quantum matter. The new record surpasses previous demonstrations and enables simulations of complex quantum matter, previously unreachable by modern supercomputers.
Physicists at MIT and Harvard University have developed a new technique to manipulate quantum bits by trapping and arranging individual atoms. This breakthrough enables the simulation of complex systems like materials and optimization problems, such as the traveling salesman problem, exponentially faster than classical computers.
A team of physicists from Harvard University has developed a special type of quantum computer, known as a quantum simulator, which is programmed by capturing super-cooled rubidium atoms with lasers. The system could shed new light on material properties and complex optimization problems.
Researchers developed a new method to protect quantum information in trapped ions by leveraging dissipation. The approach allows for autonomous correction of quantum states without requiring logical circuits or measurements.
Researchers have developed a new quantum simulation protocol to understand key properties of interacting quantum field theories. The protocol uses cold atoms as controllable quantum sensors to measure the generating functional, a fundamental concept in quantum field theory.
Researchers at US Army Research Laboratory have made breakthroughs understanding entanglement structure in quantum systems with long-range interactions. Entanglement enables ultra-secure communication, precise measurement, and powerful computers.
Researchers at the University of Vienna developed a quantum ruler for biomolecules using a novel arrangement of nanogratings and laser beams. The technique allows for precise measurement of molecular electronic properties, such as those of vitamins A, E, and K1, with high accuracy.
Researchers at Washington University in St. Louis have discovered that quasimeasurements, a new type of measurement interaction, cause the quantum Zeno effect and anti-Zeno effect. The disturbance from these measurements shifts the energy levels of the atom, leading to faster or slower decay rates.
Researchers created a numerical 'tweezers' tool to study nucleus interactions, finding that local forces play a crucial role in determining attraction or repulsion. The study sheds light on the parameters controlling these nuclear forces, which inform nuclear structure.
Scientists have confirmed novel theoretical work on Mott insulators, revealing a unique form of magnetism that arises when these materials are cooled below a critical temperature. This discovery helps to shed light on the complex interactions between electrons in these materials, which are crucial for developing new electronic devices.
Researchers at the University of Illinois used quantum simulation to replicate the properties of a topological insulator, directly observing its protected boundary state. This breakthrough enables further investigations into topological systems and their unique transport properties.
Researchers at TU Wien and Germany have developed a method to study the time structure of quantum jumps, which are extremely fast state changes in atoms. The experiment showed that the duration of two different ionization processes can be distinguished, revealing new insights into the physics of ultrashort time scales.
Researchers at University of Waterloo's IQC recorded interaction 10 times larger than previously seen between photons and qubit, enabling investigation of light-matter interactions in a new domain. The ultrastrong coupling may lead to exploration of new physics related to biological processes, exotic materials, and relativistic physics.
The study found that higher order modes trap and move particles more rapidly than fundamental modes, with the collective particle speed slowing down when more particles are added. The results also showed that interparticle distances were smaller in higher order modes.
Researchers have observed a novel state of matter with quantum spin liquid properties in calcium-chromium oxide monocrystals. Despite conventional expectations, the spins remain collective and dynamic even at extremely low temperatures, exhibiting unique behavior.
A team of researchers has developed a method to precisely alter the quantum mechanical states of electrons in an array of quantum boxes. This allows for the investigation of interactions between various types of atoms and electrons, crucial for advancing quantum technologies.
Researchers from the Henryk Niewodniczanski Institute of Nuclear Physics have observed elastic collisions between photons in heavy ion collisions. The study predicts that some deflected photons could hit detectors installed by ATLAS, CMS, and ALICE projects.