Articles tagged with Optical Lattices
Researchers discovered a maximum amount of electrical resistance that can occur due to electron collisions, offering insights into what causes resistivity at the microscopic level. The study found that when interactions between atoms become too strong, the resistivity caused by collisions eventually stops rising and saturates.
The collaboration aims to explore the role of transportable optical frequency standards in international time and frequency metrology. Transportable OFS are considered a promising approach to support comparisons of independent realizations of the second, with the goal of achieving consistent contributions to Coordinated Universal Time.
Researchers engineer optical metasurface to yield simple technique for secure data encryption, biosensing, and quantum technologies. The team encodes images on a metasurface optimized for mid-infrared range of electromagnetic spectrum.
Researchers at Lancaster University have successfully demonstrated negative refraction using atomic arrays, eliminating the need for metamaterials. This achievement paves the way for novel technologies based on negative refraction, including perfect lenses and cloaking devices.
Researchers have built the most precise experiment yet to look for gravitational anomalies caused by dark energy, using a lattice atom interferometer that can hold atoms in place for up to 70 seconds. While no deviation from predicted theory was found, the improved precision opens up possibilities for probing gravity at the quantum level.
Physicists from Princeton University have discovered the microscopic basis of kinetic magnetism, a novel form of quantum magnetism. They directly imaged the unusual type of polaron that gives rise to this magnetism, using ultracold atoms in an artificial laser-built lattice.
Scientists have developed a powerful tool to investigate molecular dynamics in real-time, tracing the evolution of gas-phase furan and uncovering its ring-opening dynamics. The technique, based on attosecond core-level spectroscopy, provides an extremely detailed picture of the relaxation process.
Researchers have developed an innovative approach to efficiently manipulate topological edge states for optical channel switching. By exploiting the finite-size effect in a two-unit-cell optical lattice, they achieved dynamic control over topological modes and demonstrated robust device performance.
Princeton researchers have achieved a major breakthrough by microscopically studying molecular gases at a level never before achieved. The team cooled molecules to ultracold temperatures, observed individual molecules with high spatial resolution, and detected subtle quantum correlations, opening up new avenues for many-body physics re...
The team isolated pairs of atoms within a 3D optical lattice to measure the strength of their mutual interaction. They confirmed a longstanding prediction that the p-wave force between particles reached its maximum theoretical limit.
Researchers use lasers to cool atoms to absolute zero, revealing new phenomena in an unexplored realm of quantum magnetism. The creation of SU(N) matter opens a gateway to understanding the behavior of materials and potentially leading to novel properties.
Researchers demonstrate the creation of a self-oscillating pump in a topological dissipative atom-cavity system, transporting atoms without external periodic driving. This discovery combines quantum many-body physics and open quantum systems, offering insights into exotic states of matter.
Physicists at Rice University have created a quantum simulator that reveals the behavior of electrons in one-dimensional wires, shedding light on spin-charge separation. The study's findings have implications for quantum computing and electronics with atom-scale wires.
Researchers at UW-Madison have developed an ultra-precise atomic clock that can measure time differences to a precision equivalent to losing one second every 300 billion years. By using a 'multiplexed' optical clock design, the team was able to test ways to search for gravitational waves and detect dark matter with unprecedented accuracy.
Researchers at Stanford University have developed a new device that brings sound to quantum science experiments, opening up new possibilities for studying solids and phases of matter. The device uses a precise cavity to hold an optical lattice of atoms, which vibrates at around 1 kHz, producing phonons - the building blocks of sound.
La Trobe University researchers developed a smart microscope slide that can detect cancer cells using enhanced color contrast. The technology uses nanoscale modifications to distinguish cancer cells from normal tissue, making early diagnosis more efficient.
Scientists from Skoltech and the University of Southampton created an all-optical lattice that houses polaritons, quasiparticles with half-light and half-matter properties. They demonstrated breakthrough results for condensed matter physics and flatband engineering.
Researchers from the Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences successfully create tensile and inhomogeneous quantum rings in a controlled manner. The work involves trapping ultracold atoms in optical lattices and modifying interaction between atoms to mimic superconductors.
Researchers at Skoltech and Southampton University develop a fully optical approach to control couplings between polariton condensates, enabling simulation of condensed matter phases. This technology uses laser excitation patterns to generate complex polariton graphs in a scalable manner.
Researchers from RIKEN developed transportable optical lattice clocks to make precise measurements of time dilation effect, validating Einstein's theory of general relativity. The study uses clocks on the base and top of the Tokyo Skytree tower to demonstrate a significant difference in clock speed due to gravity
Researchers have developed a new optical atomic clock called the 'tweezer clock' that uses laser tweezers to manipulate individual atoms. This design combines the advantages of two existing approaches, offering improved accuracy and precision, and paving the way for advances in fundamental physics research and new technologies.
Scientists have discovered a way to create artificial edge states in topological insulators using ultracold quantum gases in optical lattices. This breakthrough could lead to increased stability and energy efficiency in mobile devices, as well as the development of more efficient lasers.
Physicist Boerge Hemmerling receives $1 million NSF grant to study nonlinear optical properties and novel quantum phases of polar molecules in optical lattices. The research aims to develop novel molecular materials with tunable parameters, enabling the control of complex quantum systems.
Researchers at NICT Space-Time Standards Laboratory demonstrate a novel time scale generation method combining an optical lattice clock with a hydrogen maser. The resultant signal continued for half a year without interruption, outperforming Coordinated Universal Time (UTC) and TT(BIPM) in terms of accuracy.
Researchers at JILA used an advanced atomic clock to mimic the behavior of crystalline solids, demonstrating a novel 'off-label' use for atomic clocks. The study reveals potential applications in spintronics and quantum computing.
Researchers at LMU Munich develop a new method to probe the geometry of electronic states in solids using ultracold atoms in an optical lattice. The technique, based on Wilson lines, reveals both local and global properties of the band structure, including topological aspects.
Researchers at PTB have developed an optical lattice clock with neutral strontium atoms, achieving the best stability worldwide thanks to a newly designed laser system. The clock has reached a fractional frequency instability of 8 E-17 and attains the quantum projection noise limit with as few as 130 atoms.
Scientists from India developed a theory governing curved graphene using a quantum simulator based on an optical lattice. The findings could lead to novel graphene-based sensors with controlled deformation.
Researchers create system to manipulate atom spacing, tuning friction to a vanishing point, allowing for direct observation of individual atoms. This technique enables control over superlubricity, potentially boosting development of nanomachines, and has implications for controlling biological components.
Researchers developed two cryogenically cooled optical lattice clocks that can synchronize to a one part in 2.0 x 10^-18, nearly 1,000 times more precise than current international timekeeping standard. This precision could enable clock-based geodesy and measure the strength of gravitational potential at different locations.
Researchers at Ludwig-Maximilians-Universität München create an artificial crystal of light to observe exotic multiparticle interactions, revealing complex quantum dynamics and periodic collapses and revivals of matter wave fields. The study demonstrates the existence of three-body collisions involving multiple atoms simultaneously.
Researchers at the University of Michigan have built a more efficient Rydberg atom trap, which could enable faster quantum computers. By trapping giant Rydberg atoms, they can create stronger quantum circuits and solve complex problems that conventional computers cannot.
Researchers have developed a quantum gas microscope that allows them to observe single atoms at extremely low temperatures, exhibiting bizarre behavior. The device enables the study of novel quantum materials and simulations of condensed matter systems.
Researchers at PTB have demonstrated a more compact and portable optical atomic clock, which uses strontium-88 instead of strontium-87. The new design minimizes collisions between atoms, resulting in increased accuracy and stability. Potential applications include precise height determination and improved gravitation maps.
Researchers at Ohio State University have discovered a method to compress atoms in an optical lattice until heat is squeezed out and into a surrounding ultra-cold Bose-Einstein condensate, which can absorb and evaporate the heat away. This new approach aims to overcome temperature as a bottleneck for the creation of light crystals.
Physicists use ultracold atoms in optical lattices to simulate complex materials like high-temperature superconductors. They successfully detect the Mott insulator, a state of strong electronic interactions, and confirm a key theoretical model.