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.
Researchers have presented analytical formulas for simplified but useful qubit geometries that predict surface dielectric loss when its thickness is much less than the metal thickness, the limiting case needed for real devices. These formulas […]
Researchers at Oak Ridge National Laboratory and Purdue University have made strides toward a fully Quantum Internet by designing and demonstrating the first ever Bell state analyzer for frequency bin coding. Entanglement between two qubits is considered […]
With Quantum Computing, CaixaBank has seen an up to 90% decrease in time-to-solution for investment portfolio hedging and portfolio optimization.
Physicists have leveraged quantum information theory techniques to reveal a mechanism for amplifying, or ‘stimulating,’ the production of entanglement in the Hawking effect in a controlled manner. Furthermore, these scientists propose a protocol for testing […]
A research group at University of Melbourne has been able to observe a time crystal in action, for the very first time. Time crystals are actually a unique arrangement of particles that are in perpetual and […]
For the first time, University of Chicago researchers have created a hybrid array of neutral atoms from two different elements, significantly broadening the system’s potential applications in quantum technology. While manmade qubits such as superconducting […]
The NCSC, which is run by the NATO Communications and Information Agency (NCI Agency), protects NATO networks around the clock and works with UK company Post-Quantum to conduct the test. The trial started in March […]
A research team has discovered a Heisenberg-limited metrology via weak-value amplification without using entangled resources. Read More Quantum Computers News — ScienceDaily
In a fully-controllable experiment platform for studying non-Markovian open quantum dynamics, researchers have showed that the non-Markovianity could be investigated from the global and local aspects. By mixing random unitary dynamics, they demonstrated non-Markovian and […]
Controllable solid-state spin qubits are currently becoming useful building blocks for applied quantum technologies. A team of researchers has demonstrated that in a specific type of silicon-vacancy in the 6H-SiC polytype the excited-state fine structure […]
The new review paper on magnetic topological materials of Andrei Bernevig, Princeton University, USA, Haim Beidenkopf, Weizmann Institute of Science, Israel, and Claudia Felser, Max Planck Institute for Chemical Physics of Solids, Dresden, Germany, introduces […]
A rare spectroscopy technique performed at Swinburne University of Technology directly quantifies the energy required to bind two excitons together. The experiment harnessed interactions between real and virtual states to ‘switch‘ the electronic state of […]
A quantum processor working with photons developed at the University of Twente becomes an ever stronger ‘toolbox’ for doing experiments. The latest version not only has more inputs and outputs, it can also be fed […]
npj Quantum Information, Published online: 02 March 2022; doi:10.1038/s41534-022-00533-3 Distribution and quantification of remotely generated Wigner negativity
A sudoku-style mathematical puzzle that is known to have no classical solution has been found to be soluble if the objects being arrayed in a square grid show quantum behavior. The problem, posed by Swiss […]
Physicists at UC Santa Barbara have experimentally observed a quirky behavior of the quantum world: a ‘quantum boomerang‘ effect that occurs when particles in a disordered system are kicked out of their locations. Instead of landing […]
Researchers at Southern University of Science and Technology in China, the Austrian Academy of Sciences and other institutes worldwide have recently adapted Bell tests so that they could be implemented in state-of-the-art photonic systems. They […]
Researchers at Korea Institute of Science and Technology (KIST) have recently tried to capture the interplay between different types of information that are important while collecting quantum measurements, namely information gain, disturbance and reversibility. Information […]
The Lawrence Berkeley National Laboratory (Berkeley Lab) has open sourced a new electronics control and measurement system for superconducting quantum processors, making the engineering solutions for the emerging hardware more accessible. Superconducting circuits are one of the […]
Scientists at MIT, the University of Chicago and Columbia University, have taken a major step in the development of tailored qubits. They have demonstrated how a particular molecular family of qubits can be finely tuned […]
The field of machine learning on quantum computers got a boost from new research removing a potential roadblock to the practical implementation of quantum neural networks. While theorists had previously believed an exponentially large training […]
A collaboration between Lawrence Berkeley National Laboratory’s (Berkeley Lab’s) Applied Mathematics and Computational Research Division (AMCRD) and Physics Division has yielded a new approach to error mitigation that could help make quantum computing’s theoretical potential […]
Equinix is planning to use Quantum Key Distribution (QKD) technology from SK Telecom to secure dedicated lines between its data centers. The two companies have an agreement to develop QKD, a cryptographic communications technique which […]
An object hidden below ground has been located using quantum technology – a long-awaited milestone with profound implications for industry, human knowledge and national security. UK National Quantum Technology Hub in Sensors and Timing researchers […]
Physicists have learned to manipulate electrons in gigantic Rydberg atoms with such precision they can create ‘synthetic dimensions’ where the system acts as if it had extra spatial dimensions, which are important tools for quantum […]