DOE’s Lawrence Berkeley National Laboratory is using a sophisticated cooling system to keep qubits – the heart of quantum computers – cold enough for scientists to study them for use in quantum computers. Credit: Image courtesy of Lawrence Berkeley National Laboratory Quantum computing may revolutionize our ability to solve problems that […]

A quantum circuit. Credit: Aalto University Simulation of non-Hermitian quantum mechanics using a quantum computer goes beyond centuries-old conventions. Aalto researchers have used an IBM quantum computer to explore an overlooked area of physics, and have challenged 100-year-old cherished notions about information at the quantum level. The rules of quantum […]

Schematic of light-induced formation of Weyl points in a Dirac material of ZrTe5. Jigang Wang and collaborators report how coherently twisted lattice motion by laser pulses, i.e., a phononic switch, can control the crystal inversion symmetry and photogenerate giant low dissipation current with an exceptional ballistic transport protected by induced […]

Quantum particles lined up in a lattice form the basis for an error-tolerant quantum processor. Credit: Uni Innsbruck/Harald Ritsch Even computers can miscalculate. Already small disturbances change stored information and corrupt results. That is why computers use methods to continuously correct such errors. In quantum computers, the vulnerability to errors […]

Optimized quantum algorithms present solution to Fermi-Hubbard model on near-term hardware. Researchers from the University of Bristol and quantum start-up, Phasecraft, have advanced quantum computing research, bringing practical hybrid quantum-classical computing one step closer. The team, led by Bristol researcher and Phasecraft co-founder, Dr. Ashley Montanaro, has discovered algorithms and analysis which significantly lessen […]

Majorana Zero Energy Modes are found at the edge of 2D topological superconductors. Credit: Alex Tokarev, Ella Maru Studio Aalto University New research, published in Nature, has measured highly sought-after Majorana quantum states. A team of theoretical and experimental physicists have designed a new ultra-thin material that they have used to […]

Atomic-scale image of two interacting donors in silicon. Credit: CQC2T Australian researchers have located the ‘sweet spot’ for positioning qubits in silicon to scale up atom-based quantum processors. Researchers from the Centre of Excellence for Quantum Computation and Communication Technology (CQC2T) working with Silicon Quantum Computing (SQC) have located the ‘sweet […]

The Google Quantum Computer. Credit: Eric Lucero/Google, Inc. Researchers led by City College of New York physicist Pouyan Ghaemi report the development of a quantum algorithm with the potential to study a class of many-electron quantums system using quantum computers. Their paper, entitled “Creating and Manipulating a Laughlin-Type ν=1/3 Fractional […]

# New Circuit Compression Technique Could Deliver Real-World Quantum Computers Years Ahead of Schedule

Compression of a circuit that has an initial volume of 882 using the proposed method. The reduced circuit has a volume of 420, less than half its original volume. Credit: © National Institute of Informatics A major technical challenge for any practical, real-world quantum computer comes from the need for […]