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: 05 August 2021; doi:10.1038/s41534-021-00462-7 High-performance quantum entanglement generation via cascaded second-order nonlinear processes
npj Quantum Information, Published online: 04 August 2021; doi:10.1038/s41534-021-00457-4 A phononic interface between a superconducting quantum processor and quantum networked spin memories
Physicists have introduced an approach for simulating the quantum approximate optimization algorithm using a traditional computer. Instead of running the algorithm on advanced quantum processors, the new approach uses a classical machine-learning algorithm that closely […]
Quantum information could be behind the next technological revolution. By analogy with the bit in classical computing, the qubit is the basic element of quantum computing. However, demonstrating the existence of this information storage unit […]
A team of scientists has developed a means to create a new type of memory, marking a notable breakthrough in the increasingly sophisticated field of artificial intelligence. Read More Quantum Computers News — ScienceDaily
npj Quantum Information, Published online: 29 July 2021; doi:10.1038/s41534-021-00453-8 Stroboscopic high-order nonlinearity for quantum optomechanics
PALO ALTO, Calif. – July 27, 2021 – PsiQuantum has raised $450 million in Series D funding to build the world’s first commercially viable quantum computer. The funding round was led by funds and accounts managed by […]
npj Quantum Information, Published online: 27 July 2021; doi:10.1038/s41534-021-00451-w Hamiltonian simulation in the low-energy subspace
ID Quantique founders, Professor Nicolas Gisin and CEO Gregoire Ribordy, reflect on 20 Years of Quantum Innovation, from how they started the company to keeping the pioneering spirit alive for the next 20 years and […]
Researchers at the Quantum Technology Hub have been awarded £29,000 from the UK Carbon Capture and Storage Research Centre (UKCCSRC) to further research into how quantum gravity sensors can contribute to detecting and monitoring the […]
A phenomenon known from quantum systems could now make its way into biology: Researchers show that the notion of topological protection can also apply to biochemical networks. The model which the scientists developed makes the […]
npj Quantum Information, Published online: 23 July 2021; doi:10.1038/s41534-021-00454-7 Flexible entanglement-distribution network with an AlGaAs chip for secure communications
Markus Schröfl & Tobi Haas (Heidelberg University)Entropic uncertainty is a well-known concept to formulate uncertainty relations for continuous variable quantum systems with finitely many degrees of freedom.
npj Quantum Information, Published online: 22 July 2021; doi:10.1038/s41534-021-00452-9 Variational quantum algorithm with information sharing
npj Quantum Information, Published online: 22 July 2021; doi:10.1038/s41534-021-00450-x Demonstrating the power of quantum computers, certification of highly entangled measurements and scalable quantum nonlocality
A team of scientists proposes that modulated quantum metasurfaces can control all properties of photonic qubits, a breakthrough that could impact the fields of quantum information, communications, sensing and imaging, as well as energy and […]
npj Quantum Information, Published online: 19 July 2021; doi:10.1038/s41534-021-00445-8 Connecting Fano interference and the Jaynes-Cummings model in cavity magnonics
npj Quantum Information, Published online: 19 July 2021; doi:10.1038/s41534-021-00448-5 Time-varying quantum channel models for superconducting qubits
Researchers demonstrated theoretical 2-qubit sweet spots in capacitively-coupled triple quantum dot spin qubits, presenting exact CPHASE and CNOT gate sequences with enhanced noise immunity for fault-tolerant quantum computing.
npj Quantum Information, Published online: 16 July 2021; doi:10.1038/s41534-021-00447-6 A Bayesian analysis of classical shadows
Adrián Franco-Rubio (MPQ): I will review recent work by K. Kato, I. Kim and B. Shi, of what they have come to call the entanglement bootstrap program: an attempt at deriving the properties of TQFT-described […]
npj Quantum Information, Published online: 15 July 2021; doi:10.1038/s41534-021-00414-1 Efficient computation of the Nagaoka–Hayashi bound for multiparameter estimation with separable measurements
npj Quantum Information, Published online: 15 July 2021; doi:10.1038/s41534-021-00443-w Quantum-inspired machine learning on high-energy physics data
The quantum movements of a small glass sphere could be controlled for the first time in Vienna by combining microscopy with control engineering, setting the course for future quantum technologies. Read More Quantum Computers News […]
Scientists have devised a means of achieving improved information processing with a new technology for effective gate operation. This technology has applications in classical electronics as well as quantum computing, communications and sensing. Read More […]