• Research team envisions a bright future with active machine learning in chemical engineering

    Updated: 2023-09-29 18:09:03
    Chemical engineering researchers have a powerful new tool at their disposal: active machine learning. In a recent perspective article published in Engineering, Kevin M. Van Geem's research team at Ghent University explores the potential of active machine learning in revolutionizing the field of chemical engineering. By combining machine learning with the design of experiments, active machine learning promises to enhance the efficiency and cost-effectiveness of research, spanning all length scales of chemical engineering.

  • Researchers detail how disorder alters quantum spin liquids, forming a new phase of matter

    Updated: 2023-09-12 16:35:39
    Physicists begin to shed light on one of the most important questions regarding quantum spin liquids, and they do so by introducing a new phase of matter.

  • Researchers make a significant step towards reliably processing quantum information

    Updated: 2023-09-11 19:10:37
    Using laser light, researchers have developed the most robust method currently known to control individual qubits made of the chemical element barium. The ability to reliably control a qubit is an important achievement for realizing future functional quantum computers.

  • Machine learning contributes to better quantum error correction

    Updated: 2023-09-07 15:58:48
    Researchers have used machine learning to perform error correction for quantum computers -- a crucial step for making these devices practical -- using an autonomous correction system that despite being approximate, can efficiently determine how best to make the necessary corrections.

  • Atomically-precise quantum antidots via vacancy self-assembly

    Updated: 2023-09-05 05:49:50
    Scientists demonstrated a conceptual breakthrough by fabricating atomically precise quantum antidots using self-assembled single vacancies in a two-dimensional transition metal dichalcogenide.

  • Deriving the fundamental limit of heat current in quantum mechanical many-particle systems

    Updated: 2023-09-05 05:49:37
    Researchers have mathematically derived the fundamental limit of heat current flowing into a quantum system comprising numerous quantum mechanical particles in relation to the particle count. Further, they established a clearer understanding of how the heat current rises with increasing particle count, shedding light on the performance constraints of potential future quantum thermal devices.

  • Better cybersecurity with new material

    Updated: 2023-09-04 15:46:23
    Digital information exchange can be safer, cheaper and more environmentally friendly with the help of a new type of random number generator for encryption. The researchers behind the study believe that the new technology paves the way for a new type of quantum communication.

  • A simpler way to connect quantum computers

    Updated: 2023-08-30 18:19:37
    Researchers have developed a new approach to building quantum repeaters, devices that can link quantum computers over long distances. The new system transmits low-loss signals over optical fiber using light in the telecom band, a longstanding goal in the march toward robust quantum communication networks.

  • Paving the way for advanced quantum sensors

    Updated: 2023-08-30 18:09:50
    Quantum physics has allowed for the creation of sensors far surpassing the precision of classical devices. Now, several new studies show that the precision of these quantum sensors can be significantly improved using entanglement produced by finite-range interactions. Researchers were able to demonstrate this enhancement using entangled ion-chains with up to 51 particles.

  • Hotter quantum systems can cool faster than initially colder equivalents

    Updated: 2023-08-29 05:59:53
    The Mpemba effect is originally referred to the non-monotonic initial temperature dependence of the freezing start time, but it has been observed in various systems -- including colloids -- and has also become known as a mysterious relaxation phenomenon that depends on initial conditions. However, very few have previously investigated the effect in quantum systems. Now, the temperature quantum Mpemba effect can be realized over a wide range of initial conditions.

  • Graphene: Perfection is futile

    Updated: 2023-08-29 05:59:50
    It has long been known that graphene has excellent electronic properties. However, it was unclear until now how stable these properties are. Are they destroyed by disturbances and additional effects, which are unavoidable in practice, or do they remain intact? Scientists have now succeeded in developing a comprehensive computer model of realistic graphene structures. It turned out that the desired effects are very stable. Even graphene pieces that are not quite perfect can be used well for technological applications.

  • Quantum computer unveils atomic dynamics of light-sensitive molecules

    Updated: 2023-08-28 21:23:37
    Researchers have implemented a quantum-based method to observe a quantum effect in the way light-absorbing molecules interact with incoming photons. Known as a conical intersection, the effect puts limitations on the paths molecules can take to change between different configurations. The observation method makes use of a quantum simulator, developed from research in quantum computing, and offers an example of how advances in quantum computing are being used to investigate fundamental science.

  • Making the invisible, visible: New method makes mid-infrared light detectable at room temperature

    Updated: 2023-08-28 18:03:42
    Scientists have developed a new method for detecting mid-infrared (MIR) light at room temperature using quantum systems.

  • Scientists use quantum device to slow down simulated chemical reaction 100 billion times

    Updated: 2023-08-28 18:01:48
    Using a trapped-ion quantum computer, the research team witnessed the interference pattern of a single atom caused by a 'conical intersection'. Conical intersections are known throughout chemistry and are vital to rapid photo-chemical processes such as light harvesting in human vision or photosynthesis.

  • New quantum device generates single photons and encodes information

    Updated: 2023-08-24 20:07:51
    A new approach to quantum light emitters generates a stream of circularly polarized single photons, or particles of light, that may be useful for a range of quantum information and communication applications. A team stacked two different, atomically thin materials to realize this chiral quantum light source.

  • Do measurements produce the reality they show us?

    Updated: 2023-08-24 05:38:57
    The measurement values determined in sufficiently precise measurements of physical systems will vary based on the relation between the past and the future of a system determined by its interactions with the meter. This finding may explain why quantum experiments often produce paradoxical results that can contradict our common-sense idea of physical reality.

  • Research group detects a quantum entanglement wave for the first time using real-space measurements

    Updated: 2023-08-23 05:26:30
    A team has created an artificial quantum magnet featuring a quasiparticle made of entangled electrons, the triplon.

  • Sci­en­tists develop fermionic quan­tum pro­ces­sor

    Updated: 2023-08-23 05:26:00
    Researchers have designed a new type of quantum computer that uses fermionic atoms to simulate complex physical systems. The processor uses programmable neutral atom arrays and is capable of simulating fermionic models in a hardware-efficient manner using fermionic gates. The team demonstrated how the new quantum processor can efficiently simulate fermionic models from quantum chemistry and particle physics.

  • Quantum physicists simulate super diffusion on a quantum computer

    Updated: 2023-08-17 21:39:33
    Quantum physicists have successfully simulated super diffusion in a system of interacting quantum particles on a quantum computer. This is the first step in doing highly challenging quantum transport calculations on quantum hardware and, as the hardware improves over time, such work promises to shed new light in condensed matter physics and materials science.

  • Unlocking chaos: Ultracold quantum gas reveals insights into wave turbulence

    Updated: 2023-08-17 21:39:14
    In the intricate realm of wave turbulence, where predictability falters and chaos reigns, a groundbreaking study has emerged. The new research explores the heart of wave turbulence using an ultracold quantum gas, revealing new insights that could advance our understanding of non-equilibrium physics and have significant implications for various fields.

  • Carbon-based quantum technology

    Updated: 2023-08-15 18:18:29
    Graphene nanoribbons have outstanding properties that can be precisely controlled. Researchers have succeeded in attaching electrodes to individual atomically precise nanoribbons, paving the way for precise characterization of the fascinating ribbons and their possible use in quantum technology.

  • Researchers develop a unique quantum mechanical approach to determining metal ductility

    Updated: 2023-08-14 05:23:20
    A team of scientists developed a new quantum-mechanics-based approach to predict metal ductility. The team demonstrated its effectiveness on refractory multi-principal-element alloys.

  • Arrays of quantum rods could enhance TVs or virtual reality devices

    Updated: 2023-08-11 19:38:20
    Using scaffolds of folded DNA, engineers assembled arrays of quantum rods with desirable photonic properties that could enable them to be used as highly efficient micro-LEDs for televisions or virtual reality devices.

  • Researchers use SPAD detector to achieve 3D quantum ghost imaging

    Updated: 2023-08-08 20:12:47
    Researchers have reported the first 3D measurements acquired with quantum ghost imaging. The new technique enables 3D imaging on a single photon level, yielding the lowest photon dose possible for any measurement.

  • Quantum material exhibits 'non-local' behavior that mimics brain function

    Updated: 2023-08-08 16:09:39
    New research shows that electrical stimuli passed between neighboring electrodes can also affect non-neighboring electrodes. Known as non-locality, this discovery is a crucial milestone toward creating brain-like computers with minimal energy requirements.

  • Sensing and controlling microscopic spin density in materials

    Updated: 2023-08-03 16:29:55
    Researchers found a way to tune the spin density in diamond by applying an external laser or microwave beam. The finding could open new possibilities for advanced quantum devices.

  • Quantum discovery: Materials can host D-wave effects with F-wave behaviors

    Updated: 2023-08-02 21:25:12
    In a potential boon for quantum computing, physicists have shown that topologically protected quantum states can be entangled with other, highly manipulable quantum states in some electronic materials.

  • Absence of universal topological signatures in high harmonic generation

    Updated: 2023-08-01 15:50:13
    Theoreticians report that they found no evidence of any universal topological signatures after performing the first ab initio investigation of high harmonic generation from topological insulators.

  • Scientists create novel approach to control energy waves in 4D

    Updated: 2023-07-31 19:41:35
    Everyday life involves the three dimensions or 3D -- along an X, Y and Z axis, or up and down, left and right, and forward and back. But, in recent years scientists have explored a 'fourth dimension' (4D), or synthetic dimension, as an extension of our current physical reality.

  • When electrons slowly vanish during cooling

    Updated: 2023-07-31 16:07:43
    Many substances change their properties when they are cooled below a certain critical temperature. Such a phase transition occurs, for example, when water freezes. However, in certain metals there are phase transitions that do not exist in the macrocosm. They arise because of the special laws of quantum mechanics that apply in the realm of nature's smallest building blocks. It is thought that the concept of electrons as carriers of quantized electric charge no longer applies near these exotic phase transitions. Researchers have now found a way to prove this directly. Their findings allow new insights into the exotic world of quantum physics.

  • A new type of quantum bit in semiconductor nanostructures

    Updated: 2023-07-25 05:31:03
    Researchers have created a quantum superposition state in a semiconductor nanostructure that might serve as a basis for quantum computing. The trick: two optical laser pulses that act as a single terahertz laser pulse.

  • Unveiling the quantum dance: Experiments reveal nexus of vibrational and electronic dynamics

    Updated: 2023-07-19 20:00:21
    Scientists have demonstrated experimentally a long-theorized relationship between electron and nuclear motion in molecules, which could lead to the design of materials for solar cells, electronic displays and other applications that can make use of this powerful quantum phenomenon.

  • Theory for superfluid helium confirmed

    Updated: 2023-07-17 16:58:33
    Researchers have achieved a groundbreaking milestone in studying how vortices move in these quantum fluids. A new study of vortex ring motion in superfluid helium provides crucial evidence supporting a recently developed theoretical model of quantized vortices.

  • Researchers establish criterion for nonlocal quantum behavior in networks

    Updated: 2023-07-14 00:28:58
    A new theoretical study provides a framework for understanding nonlocality, a feature that quantum networks must possess to perform operations inaccessible to standard communications technology. By clarifying the concept, researchers determined the conditions necessary to create systems with strong, quantum correlations.

  • New superconductors can be built atom by atom

    Updated: 2023-07-13 19:20:39
    The future of electronics will be based on novel kinds of materials. Sometimes, however, the naturally occurring topology of atoms makes it difficult for new physical effects to be created. To tackle this problem, researchers have now successfully designed superconductors one atom at a time, creating new states of matter.

  • Despite doubts from quantum physicists: Einstein's theory of relativity reaffirmed

    Updated: 2023-07-13 19:19:52
    One of the most basic assumptions of fundamental physics is that the different properties of mass -- weight, inertia and gravitation -- always remain the same in relation to each other. Although all measurements to date confirm the equivalence principle, quantum theory postulates that there should be a violation. This inconsistency between Einstein's gravitational theory and modern quantum theory is the reason why ever more precise tests of the equivalence principle are particularly important. A team has now succeeded in proving with 100 times greater accuracy that passive and active gravitational mass are always equivalent -- regardless of the particular composition of the respective masses.

  • Controlling signal routing in quantum information processing

    Updated: 2023-07-13 19:19:37
    Routing signals and isolating them against noise and back-reflections are essential in many practical situations in classical communication as well as in quantum processing. In a theory-experimental collaboration, a team has achieved unidirectional transport of signals in pairs of 'one-way streets'. This research opens up new possibilities for more flexible signaling devices.

  • Physicists work to prevent information loss in quantum computing

    Updated: 2023-07-12 05:46:34
    Nothing exists in a vacuum, but physicists often wish this weren't the case. If the systems that scientists study could be completely isolated from the outside world, things would be a lot easier. Take quantum computing. It's a field that's already drawing billions of dollars in support from tech investors and industry heavyweights including IBM, Google and Microsoft. But if the tiniest vibrations creep in from the outside world, they can cause a quantum system to lose information.

  • Machine learning takes materials modeling into new era

    Updated: 2023-07-07 16:16:25
    The arrangement of electrons in matter, known as the electronic structure, plays a crucial role in fundamental but also applied research such as drug design and energy storage. However, the lack of a simulation technique that offers both high fidelity and scalability across different time and length scales has long been a roadblock for the progress of these technologies. Researchers have now pioneered a machine learning-based simulation method that supersedes traditional electronic structure simulation techniques. Their Materials Learning Algorithms (MALA) software stack enables access to previously unattainable length scales.

  • Finding the flux of quantum technology

    Updated: 2023-07-05 19:30:12
    We interact with bits and bytes everyday -- whether that's through sending a text message or receiving an email. There's also quantum bits, or qubits, that have critical differences from common bits and bytes. These photons -- particles of light -- can carry quantum information and offer exceptional capabilities that can't be achieved any other way. Unlike binary computing, where bits can only represent a 0 or 1, qubit behavior exists in the realm of quantum mechanics. Through "superpositioning," a qubit can represent a 0, a 1, or any proportion between. This vastly increases a quantum computer's processing speed compared to today's computers. Experts are now investigating the inside of a quantum-dot-based light emitter.

  • Research breakthrough could be significant for quantum computing future

    Updated: 2023-06-28 18:03:47
    Scientists using one of the world's most powerful quantum microscopes have made a discovery that could have significant consequences for the future of computing. Researchers have discovered a spatially modulating superconducting state in a new and unusual superconductor Uranium Ditelluride (UTe2). This new superconductor may provide a solution to one of quantum computing's greatest challenges.

  • Researchers make a quantum computing leap with a magnetic twist

    Updated: 2023-06-28 00:15:40
    Scientists and engineers have announced a significant advancement in developing fault-tolerant qubits for quantum computing. In a pair of articles, they report that, in experiments with flakes of semiconductor materials -- each only a single layer of atoms thick -- they detected signatures of 'fractional quantum anomalous Hall' (FQAH) states. The team's discoveries mark a first and promising step in constructing a type of fault-tolerant qubit because FQAH states can host anyons -- strange 'quasiparticles' that have only a fraction of an electron's charge. Some types of anyons can be used to make what are called 'topologically protected' qubits, which are stable against any small, local disturbances.

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