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.
Paris, June 8th 2021 C12 Quantum Electronics today announces the closing of a $10 million seed round comprising funds from 360 Capital, Bpifrance (Digital Venture Fund), Airbus Ventures, BNP Paribas Développement, and Octave Klaba (OVHcloud), […]
Researchers used the Frontera supercomputer to explore light-induced superconductivity a pulsed laser, which is believed to be a promising route to room-temperature superconductors. They found that d-wave superconductivity can be enhanced by a pulsed laser, […]
npj Quantum Information, Published online: 01 December 2021; doi:10.1038/s41534-021-00503-1 Quantum generative adversarial networks with multiple superconducting qubits
Current approaches to create superconducting qubits for quantum computers yield chips that are substantially larger than those found in classical computers. To shrink things down, researchers have taken advantage of atomically thin, 2D materials to […]
Researchers have created and observed a new phase of matter, popularly known as a time crystal. Read More Quantum Computers News — ScienceDaily
The quantum world and our everyday world are very different places. Physicists now investigate how the act of measuring a quantum particle transforms it into an everyday object. Read More Quantum Computers News — ScienceDaily
Research into superfast quantum computers is now well advanced, but it is not yet possible to connect the individual processors. An international research team has now shown a way to scale quantum computers using nanophotonic […]
Philippe FaistQuantifying quantum states’ complexity is a key problem in various subfields of science, from quantum computing to black-hole physics.
Dominik Wild (MPQ)The preparation of macroscopic non-Gaussian states has been a long-standing challenge in quantum optics.
npj Quantum Information, Published online: 26 November 2021; doi:10.1038/s41534-021-00499-8 Optimal verification of the Bell state and Greenberger–Horne–Zeilinger states in untrusted quantum networks
Daniel Malz (MPQ):A few days ago a paper by Curt von Keyserlingk, Frank Pollmann and Tibor Rakovszky appeared in which they give strong evidence that the time evolution of few-body correlators can be calculated efficiently […]
Holography is a powerful technique of photography of a light field without a lens for 3D imaging and display. Now, scientists at the Max-Planck Institute of Quantum Optics move holography forward by implementing it with […]
PRESS RELEASE Zurich, Switzerland, November 25th, 2021 The Zurich Instruments SHFQC Qubit Controller offers a full room-temperature qubit control system for up to 6 superconducting qubits in a single instrument. The SHFQC provides channels for […]
Adrián Franco Rubio (MPQ): After giving an introduction to the formalism of stabilizer and subsystem quantum error correcting codes, I will talk about the recent paper arXiv:2107.02194, where Hastings and Haah present a generalization they […]
New highly sensitive quantum sensors for the brain may in the future be able to identify brain diseases such as dementia, ALS and Parkinsons, by spotting a slowing in the speed at which signals travel […]
Miguel Bello (MPQ)First, I will review some results regarding vacancy-like modes in systems of quantum emitters coupled to structured baths.
Alvaro Alhambra (MPQ)I will describe some upcoming results (mostly numerical, with ED) on the relaxation timescales of many-body systems
npj Quantum Information, Published online: 18 November 2021; doi:10.1038/s41534-021-00471-6 Quantum mechanical rotation of a photon polarization by Earth’s gravitational field
Physicists have created a theory describing how non-reciprocity can be induced at the quantum level, paving the way for non-reciprocal transport in the next generation of nanotechnology. Read More Quantum Computers News — ScienceDaily
npj Quantum Information, Published online: 17 November 2021; doi:10.1038/s41534-021-00500-4 Fast spin-valley-based quantum gates in Si with micromagnets
Researchers have used a nanoantenna to focus light onto a single semiconductor nanobox. This approach will enhance the utility of quantum repeater technology currently under development for advanced communication and data storage. Such technology is […]
Jiri Guth-Jarkovsky (MPQ):QSVT is a framework for constructing quantum circuits
IBM has announced its largest quantum processor to date, as the company seeks to show it is on track to create a commercially-useful quantum computer by the end of 2023. The new quantum hardware, which IBM […]
Miguel Bello (MPQ):Hamiltonians that contain products of more than two operators give rise to nonlinear equations of motions.
Researchers performed the first-ever simulation of baryons — fundamental quantum particles — on a quantum computer. Read More Quantum Computers News — ScienceDaily