Articles tagged with Quantum Fluctuations
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Researchers at UC Santa Barbara discovered a new material state with quantum disordered liquid-like magnetic moments in sodium ytterbium oxide. This finding confirms the existence of a long-sought 'quantum spin liquid state,' which is desirable due to its association with entanglement.
Researchers at the University of Bristol discovered a method to build quantum sensors with high precision using artificially created atomic systems that harness natural vibrations. This breakthrough enables ultra-low fluctuations in brightness, crucial for future quantum technologies.
Scientists at Bar-Ilan University successfully image quantum events, revealing quantum bubbles and new insights into their behavior. The breakthrough experiment uses a unique microscope to detect tiny magnetic signals with sub-micron resolution.
A new uncertainty relation has been discovered, linking the precision of temperature measurements to quantum mechanics. This discovery establishes a connection between quantum uncertainty and the accuracy of nanoscale thermometers.
Researchers at Johns Hopkins University have detected electrical dipole fluctuations in a quantum material at extremely low temperatures, revealing a new property of quantum matter. The study uses Raman spectroscopy to observe the irregular oscillations of tiny charged poles on the material.
A 2017 theory by Rice University physicists Qimiao Si and Emilian Nica helps explain the behavior of an iron-based high-temperature superconductor, solving a long-standing puzzle. The theory proposes orbital-selective pairing as the key to understanding this phenomenon, revealing a new mechanism for these unusual materials.
Scientists have created a liquid one hundred million times more dilute than water and one million times thinner than air by cooling down potassium atoms to -273.15 degrees Celsius. The liquid droplets exhibit fascinating macroscopic behavior due to quantum fluctuations, allowing researchers to study unique quantum effects.
Researchers at Osaka University have discovered a clear connection between quantum fluctuations and the effective charge of current-carrying particles in exotic phase transitions. This breakthrough provides insight into quantum phase transitions, potentially unlocking applications in superconductivity and other areas.
Researchers precisely measured the entropy of a cerium copper gold alloy to shed light on high-temperature superconductivity and similar phenomena. The study provides new evidence about the possible causes of these phenomena near a quantum critical point, where electrons fluctuate between two different quantum states.
An experiment aims to resolve divergence between special relativity and standard model of cosmology by precisely measuring particle mass. The results may indicate whether the universe has a resting frame.
Researchers detect electromagnetic fluctuations in the quantum vacuum using a world-leading optical measurement technique. The findings could lead to breakthroughs in understanding radiation and material properties.
The study reveals strong correlations between laser-induced light fluctuations and mechanical motion, showcasing the strange laws of quantum mechanics. By using a phononic crystal to confine vibrations, the researchers achieved ultra-precision measurements, overcoming fundamental quantum limits.
Researchers have demonstrated a new type of quantum liquid or quantum droplet state where atoms preserve their form in absence of external confinement due to quantum effects. The discovery opens up a new research area in ultracold quantum gases and may contribute to increasing our knowledge of superfluidity.
Researchers used a German-Hungarian team to extend the Standard Model and predict axion mass range for dark matter detection. The results suggest that axions could make up 85% of the universe's mass, with masses between 50-1500 micro-electronvolts.
Scientists have discovered that even in the complete absence of light, there are fluctuations in quantum vacuum that can be converted into photons with different frequencies. This breakthrough could lead to new ways of performing logical gate operations for quantum computing.
Physicists at NIST developed a method to calibrate temperature measurements using nanomechanical systems governed by quantum mechanics. The approach observes object vibrations and subtle zero-point motion, enabling precise thermal energy determination.
Scientists from Osaka University have observed the electron partitioning process in graphene for the first time, a world-first discovery that could lead to the development of electron interferometer devices. The study found that electron partitioning took place in the p-n junction of graphene in the Quantum Hall regime.
Researchers successfully demonstrated squeezing of individual light particles, or photons, using an artificially constructed atom. The experiment achieved this by shining a faint laser beam on to their artificial atom, which excited the quantum dot and led to the emission of a stream of individual photons.
Researchers at Caltech have successfully observed and controlled quantum motion in a large mechanical device, defying classical physics. By manipulating the inherent quantum noise, they were able to reduce its impact on measurement precision.
Researchers have created a nanothermometer capable of measuring temperature fluctuations in cells, achieving unprecedented precision. By combining thermodynamic tools with quantum metrology, they established the smallest possible fluctuation in temperature that can be measured.
New Planck analysis confirms Viatcheslav Mukhanov's theory on quantum origin of universe's structure, supporting the idea that quantum fluctuations gave rise to galaxies and clusters. The study also rules out primordial gravitational waves, suggesting that instruments may not be sensitive enough to detect them yet.
Scientists from Brookhaven Lab and Stony Brook University explored quantum fluctuations behind a novel magnetic material's ultra-cold ferromagnetic phase transition. They measured the electronic, magnetic, and thermodynamic performance of metallic materials at near absolute zero temperatures.
Researchers use a superconducting quantum device to record and analyze the paths a quantum system takes between two states, revealing the existence of a quantum equivalent of classical 'least action' path. The findings have implications for controlling biological and chemical systems using lasers.
A team of researchers from Weizmann Institute and Vienna University of Technology proposed a method to amplify vacuum fluctuations by several orders of magnitude using a transmission line. This could lead to enhanced understanding of Casimir- and Van der Waals forces, with potential applications in quantum information processing.
Researchers at NIST discovered that certain quantum dots exhibit 'fluorescence intermittency,' blinking on nanosecond to millisecond timescales. This could impact the stability of quantum dot-based systems for high-speed communication and computing.
A Caltech team has engineered a miniature silicon system to produce squeezed light, a type of ultraquiet light useful for precise measurements. The system, which reduces quantum fluctuations, enables the creation of precision microsensors capable of beating standard limits set by quantum mechanics.
Recent studies suggest that the speed of light may fluctuate due to ephemeral vacuum particles, which could be testable with ultra-fast lasers. Researchers propose that physical constants like speed of light are indications of total elementary particles in nature.
Scientists at Penn State University developed a new paradigm for understanding the earliest eras of the universe, extending analyses to the Big Bang using loop quantum cosmology. The research reveals that fundamental fluctuations in space-time evolved into large-scale structures, challenging classical physics and inflationary theories.
Scientists at Berkeley Lab and UC Berkeley have made the first direct observations of distinctly quantum optical effects - amplification and squeezing - in an optomechanical system. The findings point toward low-power quantum optical devices and enhanced detection of gravitational waves.
Researchers from Jena and Graz calculated the time evolution of the vacuum decay, revealing that particles of matter and antimatter behave in a novel self-focusing way. This breakthrough increases the possibility of discovering these particles in super strong electric fields.
Scientists directly observe quantum-correlated particle-hole pairs in a one-dimensional optical lattice, allowing them to unravel a hidden order in the crystal. The work reveals fluctuations at absolute zero temperature and opens new ways to characterize novel quantum phases of matter.
Researchers at Brookhaven National Laboratory found that thin layers of copper-oxide materials exhibit wild electron spin fluctuations, a hallmark of quantum spin liquids. This discovery may be crucial to understanding high-temperature superconductivity.
Researchers at Max Planck Institute for Physics of Light create device generating true random numbers using vacuum fluctuations, crucial for secure encryption and economic simulations. The device exploits quantum mechanics' inherent randomness to produce unpredictable outcomes.
Researchers propose a theoretical framework to explain the complex quantum behavior of iron pnictides, a class of high-temperature superconductors. The theory predicts specific changes in electron-electron interactions and phase transitions, opening up new avenues for studying quantum criticality.
Researchers at Harvard University have measured a repulsive quantum mechanical force that could be harnessed and tailored for new nanotechnology applications. This discovery builds on previous work related to the Casimir force, which becomes significant when the space between two metallic surfaces measures less than 100 nanometers.
According to physicist Andrei Linde, recent developments in cosmology have changed our understanding of the structure and fate of the universe. Inflationary theory suggests that our universe could emerge from as little as a milligram of matter or even nothing, with quantum fluctuations creating galaxies along the way.
Researchers propose experiments to test quantum effects in mechanical systems, achieving sensitivity close to the quantum limit. The goal is to understand how quantum and classical physics crossover, a long-standing scientific question.
Physicists at Rice University have discovered a new class of critical point that marks a substantial advance in the study of phase transitions. They found that under suitable conditions, quantum critical metals contain 'critical local excitations' with very low energy, which could be applicable to a range of strongly correlated metals.