Articles tagged with Cold Atoms
Shunkai, developed by Professor Kenji Ohmori's team, integrates multiple layers for practical quantum computing, overcoming scalability and error correction challenges. The system uses 50 qubits initially, with plans to expand to 500 qubits, and will be partially open to external users for application development and demonstration.
Researchers use a single rubidium atom trapped in an optical tweezer as a scanning probe to image fine structures of light patterns with spatial resolution surpassing the diffraction limit. The technique successfully visualizes both light intensity and polarization distributions at the nanoscale.
Researchers at Institute of Science Tokyo have discovered a stable superfluid that inherently hosts singularities known as exceptional points. The study reveals how dissipation can stabilize this unique superfluid phase, which features a finite order parameter and emerges deep inside a strongly interacting phase.
Researchers at the University of Trieste and CNR-INO have achieved the first imaging of individual trapped ytterbium atoms in Italy. By combining intense fluorescence pulses with fast re-cooling, they demonstrated record-speed imaging of individual atoms, enabling precise onsite atom counting and advancing quantum computing applications.
A team from the University of the Witwatersrand and Huzhou University discovered a vast alphabet of high-dimensional topological signatures, enabling robust quantum information encoding. This breakthrough utilizes orbital angular momentum to reveal hidden topologies in entangled photons.
Scientists have successfully created a Schrödinger-cat state with a minute-scale lifetime, significantly enhancing quantum metrology measurement sensitivity. The long-lived state exhibits enhanced magnetic field sensitivity and is immune to intensity noise and spatial variations of the optical lattice.
A team at MIT discovered pyrene, a large carbon-containing molecule, in a distant interstellar cloud. The finding supports the PAH hypothesis and suggests that pyrene may have contributed to the formation of our solar system's chemical inventory.
Positronium, an exotic atom composed of an electron and a positron, has been cooled to just 1 degree above absolute zero. This achievement could aid in studying the properties of antimatter and potentially unlock secrets of the universe.
Scientists have developed a method to simulate gravitational waves in the lab using cold atoms, a phenomenon similar to gravitational waves. This breakthrough allows for easier study and understanding of these cosmic waves, which are challenging to detect.
Researchers create a 3D printed vacuum system to trap dark matter, using ultra-cold lithium atoms to analyze the effects of domain walls. The team expects results within a year and believes this study will be an important step forward in understanding dark energy and dark matter.
Researchers created a topological quantum simulator device that operates at room temperature, allowing for the study of fundamental nature of matter and light. The device has the potential to support the development of more efficient lasers.
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.
Researchers from the University of Copenhagen have developed a new method for measuring time using superradiant atoms, which could improve precision in areas like GPS systems and space travel. The technique uses superradiance to read out atomic oscillations without heating up the atoms.
A new technique has been developed to cool quantum simulators, allowing for more stable experiments and better insights into quantum effects. By splitting a Bose-Einstein condensate in a specific way, researchers can reduce temperature fluctuations and enhance the performance of quantum simulators.
Researchers successfully cooled positronium atoms to record-low temperatures of 170 K, significantly reducing their transverse velocity component. This achievement has far-reaching implications for precision spectroscopy and the study of quantum electrodynamics.
A Harvard team has successfully developed a self-correcting quantum computer using neutral atom arrays, achieving near-flawless performance with extremely low error rates. The breakthrough enables the creation of large-scale, error-corrected devices based on neutral atoms.
Scientists at NIST have validated a new approach to measuring extremely low gas pressures, called CAVS, which can serve as a primary standard. This technique uses a cold gas of trapped atoms to measure pressure and has been shown to be accurate and reliable for a wide range of applications.
Researchers at MIT have taken the first direct images of fermion pairs in a cloud of atoms, shedding light on how electrons form superconducting pairs that glide through materials without friction. The observations provide a visual blueprint for how electrons may pair up in superconducting materials.
The UW students' achievement enables the implementation of a fractional Fourier Transform in optical pulses, allowing for more precise pulse identification and filtering. This innovation has significant implications for spectroscopy and telecommunications, where precise signal processing is crucial.
Scientists have developed a new catalyst that can convert toxic carbon monoxide into carbon dioxide even at room temperature. By varying the size of the ceria particles, they improved the performance of palladium-based catalysts, increasing reactivity and efficiency.
Researchers at the University of Washington have developed a multifunctional interface between photonic integrated circuits and free space, allowing for simultaneous manipulation of multiple light beams. The device operates with high accuracy and reliability, enabling applications in quantum computing, sensing, imaging, energy, and more.
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...
A team of researchers observed magnetically mediated hole pairing in a synthetic crystal, confirming theories that magnetic fluctuations give rise to pairing. The experiments suggest significant mobility of bound hole pairs, which could be efficient carriers of currents.
Scientists successfully created a light source that produced two entangled light beams using rubidium atoms. The entanglement was achieved by adding new detection steps to measure the quantum correlations in the amplitudes and phases of the fields generated, enabling applications in quantum computing, encryption, and metrology.
Scientists at Swinburne University of Technology and FLEET collaborators observe and explain signatures of Fermi polaron interactions in atomically-thin WS2 using ultrafast spectroscopy. Repulsive forces arise from phase-space filling, while attractive forces lead to cooperatively bound exciton-exciton-electron states.
Researchers at Vienna University of Technology have measured the binding state of light and matter for the first time, creating an attractive force between ultracold atoms. This effect can be used to control and manipulate extreme temperatures and may also play a role in the formation of molecules in space.
Researchers at OU's CQRT are developing quantum synchronization and organization using multiple experimental approaches. They aim to create a quantum network and better understand collective interactions, with potential implications for network synchronization and electrical power systems.
Researchers at the University of Innsbruck developed a new technique to track levitated nanoparticles with improved precision. By using the reflected light of a mirror, they outperformed state-of-the-art detection methods and opened up new possibilities for nanoparticle-based sensing applications.
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.
The researchers created treelike shapes, a Möbius strip, and other patterns by controlling atomic interactions without physically moving the atoms. They demonstrated nonlocal interactions, where atoms at distant ends interact just as strongly as those near each other.
Scientists successfully image a single ion in an ion trap system on nanosecond timescale, achieving resolution beyond 175 nm. The technique also demonstrates sub-10nm positioning accuracy and time resolution of 50 ns.
Researchers at MIT have directly observed the interplay of interactions and quantum mechanics in a rotating fluid of ultracold atoms. The team created a spinning cloud of sodium atoms, which formed a needle-like structure before breaking into a crystalline pattern resembling miniature quantum tornadoes.
Researchers at Washington State University have created a technique to observe matter wave caustics in atom lasers, resulting in curving cusps or folds. These findings have potential applications for highly precise measurement and timing devices, including interferometers and atomic clocks.
A new Australian study examines systems transitioning from a normal fluid to a quantum state known as a superfluid, which can flow with zero friction. The research provides new insights into the formation of these remarkable states, revealing different timescales and correlations involved.
Researchers at TU Wien have invented a new cooling concept that combines thermodynamics and quantum physics to break low-temperature records. By using quantum effects to cool a cloud of ultracold atoms, they achieved temperatures closer to absolute zero than ever before.
Physicist Jean Dalibard is recognized for his exceptional contributions to the dynamism and influence of French research, particularly in quantum technologies. He has made major contributions to the emergence of quantum technologies by developing sources for atoms cooled and trapped by light,.
Researchers developed a compact cold-atom source with low power consumption that can be used in various quantum technologies. The device features an adjustable design that simplifies optics and improves measurement accuracy.
Astronomers have discovered nickel atoms in the cold gas surrounding interstellar comet 2I/Borisov, revealing new information about an alien icy world. The presence of nickel, a heavy element not typically observed in cold environments, suggests the comet's composition is influenced by a short-lived nickel-bearing molecule.
Researchers develop a new industrial laser system to study cold atom dynamics in space. By doubling the frequencies of widely used telecommunications lasers, their design enables accurate measurements of subtle variations in the Earth's gravitational field.
A new approach to atom interferometers allows for highly sensitive measurements of gravity and could be used in tests of general relativity. The trapped atom design greatly enhances sensitivity and precision over previous iterations, improving the signal-to-noise ratio by over 10,000-fold.
A new portable vacuum gauge, developed by NIST scientists, tracks changes in the number of cold lithium atoms trapped by laser and magnetic fields to measure pressure. This innovation uses ultracold trapped lithium atoms, which have an exceptionally low vapor pressure at room temperature.
Researchers at the Weizmann Institute of Science have created a novel method for cooling ions using electrostatic fields, allowing them to reach temperatures near absolute zero. This breakthrough enables the study of large biological molecules and nanoparticles, with potential applications in medicine and materials science.
HRL Laboratories has developed a reversible alkali atom source that runs at low power and low voltage, enabling smaller and more efficient atomic clocks. The device can capture and cool rubidium atoms near absolute zero, reducing measurement noise and increasing accuracy.
Researchers at the Weizmann Institute of Science have developed a method to overcome the fundamental limit on particle density in atomic and molecular-beam experiments. By cooling skimmers to lower temperatures, they significantly reduced shockwaves and increased beam density, enabling more interesting chemical reactions.
Physicists from the University of Liverpool have made a significant breakthrough in probing the 'dark content' of the universe using a novel experiment based on quantum interferometry. The experiment relies on ultra-cold atoms and could have far-reaching applications in navigation, gravity scanning, and understanding dark energy.
Theoretical physicists suggest creating a ring of ultracold atoms to measure gravity at short distances, potentially clarifying the universe's accelerating expansion. This concept has practical applications in motion sensors and quantum computing.
Researchers at Hong Kong University of Science and Technology have developed a method to produce subnatural-linewidth biphotons from a Doppler-broadened hot atomic vapor cell. This breakthrough simplifies the production process and enables the creation of narrowband biphotons for practical quantum applications.
Researchers at the University of Copenhagen have developed a method that reduces the noise in atomic clocks, enabling them to be even more precise. The new technique uses a quantum frequency filter to sort out unwanted wavelengths of light, resulting in a laser beam that is much more stable and precise.
Researchers have discovered conditions for mixing boson-type atoms with fermion-type ones, allowing experimental physicists to design new experiments. They also found that fermions increase the superfluid state in a system with three dimensions of bosons.
Physicists at NIST create a compact atomic clock design that relies on cold rubidium atoms, promising improved precision and stability. The new design has the potential to be smaller and more precise than existing chip-scale atomic clocks.
Scientists from Bangalore and Mainz have developed a new method for cooling ions using collisions with cold atoms. This process enables the storage of ions in ion traps at stable conditions for longer periods, which could lead to the formation of molecular ions in space.
Researchers examine relationship between disorder and quantum coherence in materials, finding that a pinch of disorder is good but too much can destroy coherence. The Joint Quantum Institute experiment uses laser beams to introduce slight disorder into rubidium atoms, revealing how it affects their behavior.
Physicists from Harvard University and Ludwig-Maximilians-Universität used the Quantum Gas Microscope to observe individual rubidium atoms transitioning between quantum states. They found that this transition occurs surprisingly fast, providing a new understanding of solid-state systems.
Physicists at Harvard University create an atomic-scale black hole by accelerating cold rubidium atoms towards a charged carbon nanotube. The experiment demonstrates the merging of cold-atom and nanoscale science, opening doors to new applications in materials and electronics.
Researchers create a thermometer capable of measuring temperatures as low as tens of trillionths of a degree above absolute zero. By leveraging the magnetization of atoms in a magnetic field, scientists were able to extract temperature information from easily measurable properties.
A team of researchers at UC Berkeley has successfully created a Bose-Einstein condensate in a magnetic storage ring, containing rubidium atoms at extremely low temperatures. The cold collisions of these slow-moving atoms may reveal new insights into quantum physics.
Physicists at Georgia Institute of Technology create Bose-Einstein condensates using an all-optical technique, confining rubidium-87 atoms with carbon dioxide lasers. This method is simpler and faster than magnetic confinement, allowing for a wider range of atoms to be used.
Researchers at Max-Planck Institute for Quantum Optics successfully produce novel molecule by trapping single atom between two mirrors with highly reflecting surfaces. The molecule is created when an individual atom absorbs a light quantum and forms a bound state, exhibiting periodic energy exchange with the light field.
Researchers at NIST have demonstrated that three atom waves can be mixed together to produce a fourth matter wave, similar to combining optical laser beams. This breakthrough opens a new field of non-linear atom optics, which may lead to applications in amplifying matter waves and exploring quantum behavior.
Using high-intensity ultrasound, researchers discovered a dramatically improved catalyst for removing sulfur-containing compounds from gasoline and other fossil fuels. The new form of molybdenum disulfide is 10 times more active than the standard industrial catalyst.