/ en-us Â鶹ÒùÔº internet news portal provides the latest news on science including: Â鶹ÒùÔºics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. On July 8, 2025, physicists from Aalto University in Finland published a transmon qubit coherence measurement in Nature Communications that dramatically surpasses previous scientifically published records. The millisecond coherence measurement marks a quantum leap in computational technology, with the previous maximum echo coherence measurements approaching 0.6 milliseconds. /news/2025-07-quantum-transmon-qubit-coherence-millisecond.html Quantum Â鶹ÒùÔºics Tue, 08 Jul 2025 05:00:01 EDT news670757401 Recent technological advances have opened new exciting possibilities for the development of cutting-edge quantum devices, including quantum random access memory (QRAM) systems. These are memory architectures specifically meant to be integrated inside quantum computers, which can simultaneously retrieve data from multiple 'locations' leveraging a quantum effect known as coherent superposition. /news/2025-06-quantum-random-access-memory-based.html Quantum Â鶹ÒùÔºics Thu, 12 Jun 2025 10:19:23 EDT news668942346 Quantum computers, which operate leveraging quantum mechanics effects, could soon outperform traditional computers in some advanced optimization and simulation tasks. Most quantum computing systems developed so far store and process information using qubits (quantum units of information that can exist in a superposition of two states). /news/2025-02-approach-decoherence-superconducting-qudit-based.html Quantum Â鶹ÒùÔºics Fri, 28 Feb 2025 06:50:01 EST news659871755 Researchers from the RIKEN Center for Quantum Computing and Toshiba have succeeded in building a quantum computer gate based on a double-transmon coupler (DTC), which had been proposed theoretically as a device that could significantly enhance the fidelity of quantum gates. /news/2024-11-scientists-high-fidelity-quantum-gate.html Quantum Â鶹ÒùÔºics Fri, 22 Nov 2024 09:49:38 EST news651491375 A team of computer engineers from the National Institute of Information and Communications Technology, NTT Corporation and Nagoya University have developed what they claim is the world's first superconducting flux qubit that can operate without the need for a surrounding magnetic field. /news/2024-10-superconducting-flux-qubit-magnetic-field.html Quantum Â鶹ÒùÔºics Thu, 17 Oct 2024 12:40:01 EDT news648387345 Scientists from the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have shown that a type of qubit whose architecture is more amenable to mass production can perform comparably to qubits currently dominating the field. With a series of mathematical analyses, the scientists have provided a roadmap for simpler qubit fabrication that enables robust and reliable manufacturing of these quantum computer building blocks. /news/2024-09-qubit-architecture-enable-easier-quantum.html Quantum Â鶹ÒùÔºics Wed, 18 Sep 2024 12:02:04 EDT news645879721 Quantum technology could outperform conventional computers on some advanced optimization and computational tasks. In recent years, physicists have been working to identify new strategies to create quantum systems and promising qubits (i.e., basic units of information in quantum computers). /news/2024-02-flowermon-superconducting-qubit-based-cuprate.html Superconductivity Quantum Â鶹ÒùÔºics Mon, 12 Feb 2024 10:41:31 EST news626956886 Quantum computers can solve certain computational problems much faster than ordinary computers by using specific quantum properties. The basic building blocks of such machines are called quantum-bits or qubits. Qubits can be realized using several physical platforms such as nuclear spins, trapped ions, cold atoms, photons, and using superconducting Josephson circuits. /news/2023-09-scalable-user-friendly-platform-physicists-advanced.html Quantum Â鶹ÒùÔºics Wed, 13 Sep 2023 13:15:44 EDT news613829681 Researchers from the Department of Â鶹ÒùÔºics at Universität Hamburg, observed a quantum state that was theoretically predicted more than 50 years ago by Japanese theoreticians but so far eluded detection. By tailoring an artificial atom on the surface of a superconductor, the researchers succeeded in pairing the electrons of the so-called quantum dot, thereby inducing the smallest possible version of a superconductor. The work appears in the journal Nature. /news/2023-08-pairing-electrons-artificial-atoms-quantum.html Superconductivity Quantum Â鶹ÒùÔºics Thu, 17 Aug 2023 11:13:27 EDT news611489602 Â鶹ÒùÔºicists at the University of Regensburg (UR) led by the research groups of Professor Dr. Christoph Strunk / Dr. Nicola Paradiso and Professor Dr. Jaroslav Fabian made an exciting discovery: In their publication just published in Nature Nanotechnology, the research teams experimentally demonstrate a dramatic sign change of the supercurrent diode effect. The corresponding experimental data are in quantitative agreement with the theory of Dr. Andreas Costa, also a physicist at the University of Regensburg. /news/2023-07-physicists-reversal-josephson-diode-effect.html Superconductivity Quantum Â鶹ÒùÔºics Mon, 10 Jul 2023 13:04:36 EDT news608213072 An interdisciplinary team at the Advanced Quantum Testbed (AQT) at Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California, Berkeley's Quantum Nanoelectronics Laboratory (QNL) achieved a technical breakthrough using qutrits—three-level systems—on a superconducting quantum processor. /news/2023-07-ternary-quantum-success-generating-two-qutrit.html Quantum Â鶹ÒùÔºics Thu, 06 Jul 2023 12:40:01 EDT news607786799 A team of researchers at Microsoft Quantum has reportedly achieved a first milestone toward creating a reliable and practical quantum computer. In their paper, published in the journal Â鶹ÒùÔºical Review B, the group describes the milestone and their plans to build a reliable quantum computer over the next 25 years. /news/2023-06-microsoft-milestone-reliable-quantum.html Quantum Â鶹ÒùÔºics Sat, 24 Jun 2023 03:12:13 EDT news606729573 The next generation of quantum devices requires high-coherence qubits that are less error-prone. Responding to this need, researchers at the AQT at Berkeley Lab, a state-of-the-art collaborative research laboratory, developed a blueprint for a novel quantum processor based on "fluxonium" qubits. Fluxonium qubits can outperform the most widely used superconducting qubits, offering a promising path toward fault-tolerant universal quantum computing. /news/2023-04-quantum-fluxonium-processors.html Superconductivity Quantum Â鶹ÒùÔºics Tue, 11 Apr 2023 09:40:53 EDT news600424849 Just as the sound of a guitar depends on its strings and the materials used for its body, the performance of a quantum computer depends on the composition of its building blocks. Arguably the most critical components are the devices that encode information in quantum computers. /news/2023-01-silicides-impact-transmon-qubits.html Condensed Matter Quantum Â鶹ÒùÔºics Fri, 27 Jan 2023 09:59:04 EST news594035942 We see the world around us because light is being absorbed by specialized cells in our retina. But can vision happen without any absorption at all—without even a single particle of light? Surprisingly, the answer is yes. /news/2022-12-quantum-mechanics.html Quantum Â鶹ÒùÔºics Wed, 21 Dec 2022 16:34:05 EST news590862841 A research partnership at the Advanced Quantum Testbed (AQT) at Lawrence Berkeley National Laboratory (Berkeley Lab) and Chicago-based Super.tech (acquired by ColdQuanta in May 2022) demonstrated how to optimize the execution of the ZZ SWAP network protocol, important to quantum computing. The team also introduced a new technique for quantum error mitigation that will improve the network protocol's implementation in quantum processors. The experimental data was published this July in Â鶹ÒùÔºical Review Research, adding more pathways in the near term to implement quantum algorithms using gate-based quantum computing. /news/2022-08-optimizing-swap-networks-quantum.html General Â鶹ÒùÔºics Quantum Â鶹ÒùÔºics Thu, 04 Aug 2022 11:00:13 EDT news578650874 Quantum computers, devices that exploit quantum phenomena to perform computations, could eventually help tackle complex computational problems faster and more efficiently than classical computers. These devices are commonly based on basic units of information known as quantum bits, or qubits. /news/2022-07-alternative-superconducting-qubit-high-quantum.html Superconductivity Quantum Â鶹ÒùÔºics Wed, 27 Jul 2022 09:24:38 EDT news578132673 Research conducted within the Cluster of Excellence "Matter and Light for Quantum Computing" (ML4Q) has analyzed cutting-edge device structures of quantum computers to demonstrate that some of them are indeed operating dangerously close to a threshold of chaotic meltdown. The challenge is to walk a thin line between too high, but also too low disorder to safeguard device operation. The study has been published today in Nature Communications. /news/2022-05-quantum-combination-disorder.html Quantum Â鶹ÒùÔºics Fri, 06 May 2022 11:56:10 EDT news571056966 In a new report now published in Science Advances, Peter A. Spring and a team of scientists in physics at the Oxford University described qubit coherence and low cross-talk and single-qubit gate errors in superconducting qubit architecture, suited for two-dimensional (2D) lattices of qubits. The experimental setup involved an inductively shunted cavity enclosure with non-galvanic, out-of-plane control wiring, qubits and resonators fabricated on opposing sides of a substrate. The scientists developed a proof-of-concept device featuring four uncoupled transmon qubits, i.e., a superconducting charged qubit with reduced sensitivity to charge noise, to exhibit specific features measured via simultaneous randomized benchmarking. The three-dimensional integrated nature of the control wiring allowed the qubit to remain addressable as the architecture formed larger qubit lattices. /news/2022-04-high-coherence-cross-talk-superconducting-qubit.html Superconductivity Quantum Â鶹ÒùÔºics Fri, 29 Apr 2022 09:30:01 EDT news570441930 For quantum computers to surpass their classical counterparts in speed and capacity, their qubits—which are superconducting circuits that can exist in an infinite combination of binary states—need to be on the same wavelength. Achieving this, however, has come at the cost of size. Whereas the transistors used in classical computers have been shrunk down to nanometer scales, superconducting qubits these days are still measured in millimeters—one millimeter is one million nanometers. /news/2021-11-qubits-quantum-atom-thin-materials.html Nanophysics Tue, 30 Nov 2021 15:50:25 EST news557509822 The connection between microscopic material properties and qubit coherence are not well understood despite practical evidence that material imperfections present an obstacle to applications of superconducting qubits. In a new report now published on Communications Materials, Anjali Premkumar and a team of scientists in electrical engineering, nanomaterials, physics and angstrom engineering at Princeton University and in Ontario, Canada, combined measurements of transmon qubit relaxation (T1) times with spectroscopy, alongside microscopy of polycrystalline niobium (Nb) films used during qubit development. Based on films deposited via three different techniques, the team revealed correlations between transmon qubit relaxation times and intrinsic film properties, including grain size to enhance oxygen diffusion along grain boundaries, while also increasing the concentration of suboxides near the surface. The residual resistance ratio of the polycrystalline niobium films can be used as a figure of merit to understand qubit lifetimes, and the new approach charts a path for materials-driven improvements of superconducting qubit performance. /news/2021-09-materials-superconducting-qubits.html Condensed Matter Quantum Â鶹ÒùÔºics Thu, 02 Sep 2021 10:00:02 EDT news549784120 The secret to building superconducting quantum computers with massive processing power may be an ordinary telecommunications technology—optical fiber. /news/2021-03-optical-fiber-boost-power-superconducting.html Optics & Photonics Quantum Â鶹ÒùÔºics Wed, 24 Mar 2021 12:00:09 EDT news535792129 Researchers have recently displayed the interaction of superconducting qubits; the basic unit of quantum information, with surface acoustic wave resonators; a surface-wave equivalent of the crystal resonator, in quantum physics. This phenomena opens a new field of research, defined as quantum acoustodynamics to allow the development of new types of quantum devices. The main challenge in this venture is to manufacture acoustic resonators in the gigahertz range. In a new report now published on Nature Communications Â鶹ÒùÔºics, Aleksey N. Bolgar and a team of physicists in Artificial Quantum Systems and Â鶹ÒùÔºics, in Russia and the U.K., detailed the structure of a significantly simplified hybrid acoustodynamic device by replacing an acoustic resonator with a phononic crystal or acoustic metamaterial. /news/2020-11-photonic-crystal-coupled-transmission-line.html Quantum Â鶹ÒùÔºics Fri, 27 Nov 2020 13:00:03 EST news525702209 A new computer program that spots when information in a quantum computer is escaping to unwanted states will give users of this promising technology the ability to check its reliability without any technical knowledge for the first time. /news/2019-03-leakage-quantum.html Quantum Â鶹ÒùÔºics Tue, 19 Mar 2019 10:00:08 EDT news472196916 An international team of physicists at ETH Zurich, Aalto University, the Moscow Institute of Â鶹ÒùÔºics and Technology, and the Landau Institute for Theoretical Â鶹ÒùÔºics in Moscow has demonstrated that algorithms and hardware developed originally in the context of quantum computation can be harnessed for quantum-enhanced sensing of magnetic fields. /news/2018-07-refined-magnetic.html Quantum Â鶹ÒùÔºics Tue, 03 Jul 2018 05:30:14 EDT news449814600 Builders of future superconducting quantum computers could learn a thing or two from semiconductors, according to a report in Nature Communications this week. By leveraging the good ideas of the natural world and the semiconductor community, researchers may be able to greatly simplify the operation of quantum devices built from superconductors. They call this a "semiconductor-inspired" approach and suggest that it can provide a useful guide to improving superconducting quantum circuits. /news/2016-03-semiconductor-inspired-superconducting-quantum-devices.html Quantum Â鶹ÒùÔºics Thu, 17 Mar 2016 09:36:30 EDT news377426176 (Â鶹ÒùÔºOrg.com) -- While researchers have already demonstrated the building blocks for few-bit quantum computers, scaling these systems up to large quantum computers remains a challenge. One of the biggest problems is developing physical systems that can reliably store thousands of qubits, and enabling bits and pairs to be addressed individually for gate operations. /news/2009-09-quantum-billions-electron.html Quantum Â鶹ÒùÔºics Wed, 09 Sep 2009 09:02:02 EDT news171705608