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: 10 January 2022; doi:10.1038/s41534-021-00513-z Parameter estimation in quantum sensing based on deep reinforcement learning
npj Quantum Information, Published online: 10 January 2022; doi:10.1038/s41534-021-00512-0 Identifying optimal cycles in quantum thermal machines with reinforcement-learning
Researchers have developed a computational approach for simulating interactions between matter and light at the atomic scale. The team tested their method by modeling light — matter interactions in a thin film of amorphous silicon […]
An international team of leading scientists has compiled a comprehensive overview of the potential, global outlook, background and frontiers of integrated photonics. The paper is a roadmap for integrated photonic circuits for quantum technologies. The […]
An international team of physicists under the leadership of Prof. Matthias Kling at the Max-Planck-Institute for Quantum Optics and the Ludwig-Maximilians-Universität has extended a measurement method for the observation of light-induced processes in solids.
An international team of physicists under the leadership of Prof. Matthias Kling at the Max-Planck-Institute for Quantum Optics and the Ludwig-Maximilians-Universität has extended a measurement method for the observation of light-induced processes in solids.
Magnets and superconductors don’t normally get along, but a new study shows that ‘magic-angle’ graphene is capable of producing both superconductivity and ferromagnetism, which could be useful in quantum computing.
Physicists have directly observed ultracold atoms forming ‘quantum tornadoes’ in a spinning fluid of ultracold atoms. The observations record a key crossover from classical to quantum behavior.
Researchers have designed and simulated the first topological acoustic transistors — with sound waves instead of electrons — and proposed a connection architecture to form a universal logic gate that can switch the flow of sound on and off.
The transmission electron microscope (TEM) can image molecular structures at the atomic scale by using electrons instead of light, and has revolutionized materials science and structural biology. The past decade has seen a lot of […]
Superconducting uranium ditelluride is a promising material in the race to create fault-tolerant quantum computers, but physicists are rethinking how superconductivity arises in the material in light of puzzling new experimental evidence. Read More Quantum […]
Quantum effects in superconductors could give semiconductor technology a new twist. Researchers have identified a composite material that could integrate quantum devices into semiconductor technology, making electronic components significantly more powerful. Read More Quantum Computers […]
Which factors determine how fast a quantum computer can perform its calculations? Physicists have devised an elegant experiment to answer this question. Read More Quantum Computers News — ScienceDaily
Technologies that take advantage of novel quantum mechanical behaviors are likely to become commonplace in the near future. These may include devices that use quantum information as input and output data, which require careful verification […]
By Anika Pflanzer, Wolf Richter, and Henning So, McKinsey Several recent breakthroughs in research on quantum computing and its industrial applications have reinforced its tremendous potential. The demonstration of large-scale quantum computers,1 research on noise-free quantum computation,2 and the implementation […]
Many publications by Max Planck scientists in 2021 were of great social relevance or met with a great media response. We have selected 12 articles to present you with an overview of some noteworthy research […]
For many applications making use of quantum effects, the light has to be in a certain state — namely a single photon state. But what is the best way of generating such single photon states? Researchers have now proposed an entirely new way.
npj Quantum Information, Published online: 21 December 2021; doi:10.1038/s41534-021-00511-1 Quantum communication with itinerant surface acoustic wave phonons
What does a quantum computer have in common with a top draft pick in sports? Both have attracted lots of attention from talent scouts. Quantum computers, experimental machines that can perform some tasks faster than […]
High-precision measurements have provided important clues about processes that impair the efficiency of superconductors. Future work building on this research could offer improvements in a range of superconductor devices, such quantum computers and sensitive particle […]
Frequency microcombs are specialized light sources that can function as light-based clocks, rulers and sensors to measure time, distance and molecular composition with high precision. New research presents a novel tool for investigating the quantum […]
David Castells (MPQ)We will be looking into two-dimensional arrays of atoms in an optical lattice with sub-wavelength spacing.
An international team of researchers shows through a concrete theoretical experiment that the prediction by standard complex quantum theory cannot be expressed by its real counterpart and ratifies its need of complex numbers. Their results […]
Researchers have made a breakthrough that should help pave the way for greatly improved control over the formation of quantum bits or qubits, the basic unit of quantum information technology. Read More Quantum Computers News […]
npj Quantum Information, Published online: 16 December 2021; doi:10.1038/s41534-021-00508-w Hybrid light-matter networks of Majorana zero modes