Researchers successfully simulated Google’s 53-qubit Sycamore quantum circuit seven times faster than the original quantum computer using 1,432 GPUs and innovative tensor network algorithms, effectively refuting Google’s quantum advantage claim.
Scientists have discovered and experimentally confirmed the existence of “quadruplons,” genuine four-body quasi-particles consisting of two electrons and two holes tightly bound together in a monolayer semiconductor, which represent a fundamentally new type of matter excitation beyond previously known quasi-particles like excitons and bi-excitons.
UCL researchers have developed a groundbreaking technique using arsenic atoms in silicon that achieves a 97% success rate for single-atom placement (compared to phosphorus’s 70%), potentially solving quantum computing’s twin challenges of error rates and scalability through scanning tunneling microscopy hydrogen resist lithography.
A groundbreaking theory bridges quantum mechanics and general relativity by treating the spacetime metric as a quantum operator and introducing an entropy-based gravitational action that yields modified Einstein equations with an emergent cosmological constant, potentially explaining cosmic expansion and dark matter through a novel auxiliary “G-field.”
Harvard scientists have developed a groundbreaking photon router that creates an optical interface between light signals and superconducting microwave qubits, potentially solving a major quantum computing challenge by enabling different quantum systems to communicate efficiently without bulky wires, thus bringing distributed, fiber-optic-based quantum computers closer to reality.
This new program (Master’s in Quantum Science and Engineering) at EPFL, Lausanne, Switzerland, allows students with varied backgrounds in science and engineering to have the opportunity to acquire a comprehensive set of skills to become […]
In new research from the U.S. Department of Energy’s (DOE) Argonne National Laboratory, scientists have achieved efficient quantum coupling between two distant magnetic devices, which can host a certain type of magnetic excitations called magnons. […]
Semiconductors are the foundation of modern technology while superconductors with their zero electrical resistance could become the basis for future technologies, including quantum computers. So-called ‘hybrid structures’ — carefully crafted sandwiches made from superconductors and […]
Scientists at the Georgia Tech Research Institute (GTRI) have demonstrated the feasibility of a new approach that moves trapped ion pairs through a single laser beam, potentially reducing power requirements and simplifying the system. The researchers described […]
New technology to make charging electric cars as fast as pumping gas. Quantum charging will cut the charging time of electric vehicles from ten hours to three minutes. Read More Quantum Computers News — ScienceDaily
Contextuality is essential to explain the power of quantum computers and the security of quantum communications. Quantum measurements cannot be thought of as revealing preexisting results, even when they do not disturb any other measurement […]
Fragments of the interior of a proton have been shown by scientists from Mexico and Poland to exhibit maximum quantum entanglement. The discovery, already confronted with experimental data, allows us to suppose that in some […]
Researchers have developed an algorithm that uses the most quantum bits to date to calculate ground state energy, the lowest-energy state in a quantum mechanical system. The discovery could make it easier to design new […]
A team of scientists at CERN led by MPQ physicist Masaki Hori has found that a hybrid antimatter-matter atom behaves in an unexpected way when submerged in superfluid helium. The result may open a new […]
Researchers from RIKEN and QuTech—a collaboration between TU Delft and TNO— have achieved a key milestone toward the development of a fault-tolerant quantum computer. They were able to demonstrate a two-qubit gate fidelity of 99.5 […]
A new International Network set up by QT Hub Sensors and Timing researchers at the University of Birmingham aims to tackle global challenges, as set out in the UN Sustainable Development Goals. Since the set […]
Long-duration quantum memories for photonic qubits are essential components for achieving long-distance quantum networks and repeaters. The mapping of optical states onto coherent spin-waves in rare earth ensembles is a particularly promising approach to quantum […]
Experimental physicists have succeeded for the first time in controlling protected quantum states – so-called dark states – in superconducting quantum bits. The entangled states are 500 times more robust and could be used, for […]
Party mood in our school laboratory PhotonLab. The German Association of School Labs awarded the team led by Dr Silke Stähler-Schöpf and Linda Qerimi a prize for the “Experiment of the Year”. The LeLa award […]
Quantum computers could be constructed cheaply and reliably using a new technique perfected by a University of Melbourne-led team that embeds single atoms in silicon wafers, one-by-one, mirroring methods used to build conventional devices. The […]
A team of researchers at the University of Chicago have achieved two major breakthroughs to overcome common challenges for quantum systems: They were able to read out their qubit on demand, and then keep the quantum state […]
Unforgeable quantum money tokens were the first invention of quantum information science, but remain technologically challenging as they require quantum memories and/or long-distance quantum communication. More recently, virtual “S-money” tokens were introduced. These are generated […]
A Quantum Ensemble — a set of quantum states with their corresponding probabilities — is essential to the encoding of classical information for transmission over quantum channels. But receivers must be able to ‘guess’ the […]
Communication between quantum systems depends on their ability to effectively interact with light. Some molecular crystals have proven to be new materials with excellent quantum properties. They are of great interest for creating quantum computers […]
A collaborative study confirms a potential new switching mechanism for a proposed generation of ultra-low energy topological electronics. Based on novel, quantum nanoribbons terminating on ‘zigzag’ edges, such devices would switch from non-conducting to conducting […]
A tiny experiment launching to the International Space Station later this year could set the stage for a future global quantum network. Called the Space Entanglement and Annealing QUantum Experiment (or SEAQUE), the milk-carton-size technology […]
Quantum Machines (QM) announced the availability of the company’s all-in-one RF up/down-conversion module: Octave. The addition of Octave to the OPX offering creates an end-to-end solution for quantum control that can scale alongside the users’ demand. The […]
Bosch is setting up a new business unit to commercialise quantum sensors. Located in Germany initially, it will look to pool the results of research so far and translate them into products. Bosch said that […]
Tunneling defects in disordered materials form spurious two-level systems which are a major source of decoherence for micro-fabricated quantum devices. For superconducting qubits, defects in tunnel barriers of submicrometer-sized Josephson junctions couple strongest to the […]
Researchers experimentally demonstrated five information-theoretically secure anonymity protocols on an eight user city-wide quantum network using polarisation entangled photon pairs. Anonymity in networked communication is vital for many privacy-preserving tasks. Secure key distribution alone is […]