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.
npj Quantum Information, Published online: 26 August 2021; doi:10.1038/s41534-021-00466-3 Counteracting dephasing in Molecular Nanomagnets by optimized qudit encodings
The Quantum Industry Day gathers academic and industrial R&D to foster exchange and accelerate the development of new quantum products. Large private and public investments are rapidly pushing quantum technologies out of labs and into real-world […]
npj Quantum Information, Published online: 25 August 2021; doi:10.1038/s41534-021-00461-8 Energy-participation quantization of Josephson circuits
Scientists have taken a clear picture of electronic particles that make up a mysterious magnetic state called quantum spin liquid (QSL). The achievement could facilitate the development of superfast quantum computers and energy-efficient superconductors. The […]
A wearable brain imaging system developed by Hub researchers through the recently launched spin-out company Cerca Magnetics has been installed at the Hospital for Sick Children (SickKids) in Toronto for ground-breaking research into autism. This […]
Bilayer graphene with one of the two layers twisted displayed unique resonant electronic behavior. Understanding how electrons move in such 2-D materials could shed light on how to manipulate them for quantum computing and communication. […]
The quantum computing market is projected to reach $65 billion by 2030, a hot topic for investors and scientists alike because of its potential to solve incomprehensibly complex problems. Drug discovery is one example. To […]
npj Quantum Information, Published online: 20 August 2021; doi:10.1038/s41534-021-00468-1 Variational preparation of finite-temperature states on a quantum computer
A study has developed a new method that enables quantum computers to measure the thermodynamic properties of systems by calculating the zeros of the partition function.
‘Growing’ electronic components directly onto a semiconductor block avoids messy, noisy oxidation scattering that slows and impedes electronic operation. A new study shows that the resulting high-mobility components are ideal candidates for high-frequency, ultra-small electronic […]
Researchers have devised a method for measuring the high-spin state of up to four electrons confined on a tiny gallium arsenide quantum dot. This research may lead to quantum computers that can process information by […]
npj Quantum Information, Published online: 19 August 2021; doi:10.1038/s41534-021-00464-5 Laser-annealing Josephson junctions for yielding scaled-up superconducting quantum processors
npj Quantum Information, Published online: 18 August 2021; doi:10.1038/s41534-021-00460-9 Proposal for space-borne quantum memories for global quantum networking
A decades-old problem about how to reliably control millions of qubits in a silicon quantum computer chip has now been solved. Read More Quantum Computers News — ScienceDaily
Instead of waiting for fully mature quantum computers to emerge, researchers have developed hybrid classical/quantum algorithms to extract the most performance — and potentially quantum advantage — from today’s noisy, error-prone hardware. Read More Quantum […]
Quantum entanglement is one of the most fundamental and intriguing phenomena in nature. Recent research on entanglement has proven to be a valuable resource for quantum communication and information processing. Now, scientists have discovered a […]
npj Quantum Information, Published online: 12 August 2021; doi:10.1038/s41534-021-00455-6 Efficient verification of anticoncentrated quantum states
npj Quantum Information, Published online: 09 August 2021; doi:10.1038/s41534-021-00463-6 Quantum Fourier transform for nanoscale quantum sensing
Quantum computing offers significant advantages for analyzing discrete stochastic processes by calculating characteristic functions through quantum superposition (“quantum brute force”), reducing variance without importance sampling, providing quadratic speedup through amplitude estimation, and demonstrating practical applications in finance and random walks.
npj Quantum Information, Published online: 09 August 2021; doi:10.1038/s41534-021-00465-4 Lost photon enhances superresolution
A new article gives an overview of almost three decades of research into colloidal quantum dots, assesses the technological progress for these nanometer-sized specs of semiconductor matter, and weighs the remaining challenges on the path […]
A new review throws the spotlight on heterostructures of topological insulators and magnetic materials, where the interplay of magnetism and topology can give rise to exotic quantum phenomena that are promising building blocks for future […]
In its latest report published in Nature, Alibaba shows how QRNGs with intrinsic unpredictability can be used to greatly enhance the security of cryptosystems. Alibaba has tested the use of QRNG for their online services (e.g., Ant […]
Engineers have been working to develop materials that can enable quantum information-based technologies for such applications as quantum computing, communications, sensing, and simulation. Read More Quantum Computers News — ScienceDaily
npj Quantum Information, Published online: 05 August 2021; doi:10.1038/s41534-021-00456-5 Nearest centroid classification on a trapped ion quantum computer