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: 16 December 2021; doi:10.1038/s41534-021-00502-2 Maximizing quantum discord from interference in multi-port fiber beamsplitters
Researchers have observed exotic fractional states at low magnetic field in twisted bilayer graphene for the first time. Read More Quantum Computers News — ScienceDaily
Losing particles can lead to positive, robust effects. An international collaboration has demonstrated a novel topology arising from losses in hybrid light-matter particles, introducing a new avenue to induce the highly-prized effects inherent to conventional […]
Laser beams can do more than just heat things up; they can cool them down too. That is nothing new for physicists who have devoted themselves to precision spectroscopy and the development of optical atomic […]
npj Quantum Information, Published online: 13 December 2021; doi:10.1038/s41534-021-00507-x Experimental critical quantum metrology with the Heisenberg scaling
Paris, December 9th, 2021 – PASQAL today announced a collaboration with NVIDIA to build a Quantum Computing Center of Excellence, featuring a cluster of 10 NVIDIA DGX A100 systems with NVIDIA InfiniBand networking to enhance its portfolio of solutions. PASQAL, […]
npj Quantum Information, Published online: 10 December 2021; doi:10.1038/s41534-021-00497-w A machine learning approach to Bayesian parameter estimation
Researchers have developed a circuit that produces the high-quality microwave signals required to control quantum computers while operating at temperatures near absolute zero. This is a key step towards moving the control system closer to […]
Georgios Styliaris (MPQ)Locality in quantum Hamiltonians places fundamental constraints the nature of correlations, and in particular gives rise to a meaningful classification of phases.
npj Quantum Information, Published online: 09 December 2021; doi:10.1038/s41534-021-00505-z Dynamic synthesis of Heisenberg-limited spin squeezing
Berkeley, Calif., Dec. 06, 2021 (GLOBE NEWSWIRE) — Rigetti Computing, a pioneer in full-stack quantum computing, today announced a collaboration with Microsoft to provide Rigetti quantum computers over the cloud to users of Microsoft’s Azure Quantum […]
A new concept has been developed that has the potential to assist new instruments in the investigation of fundamental science topics such as gravitational waves and dark matter.
Cosimo Rusconi (MPQ):I will present the paper PRL 120, 024102 (2018) (see also article cover at QuantaMagazine) where the authors implement a recurrent neural network (RNN) which is able to predict the dynamics of a […]
Quantum Origin is the world’s first commercial product built using quantum computers that delivers an outcome that classical computers could not achieve. Quantum Origin is the first platform to derive cryptographic keys using the output […]
npj Quantum Information, Published online: 07 December 2021; doi:10.1038/s41534-021-00504-0 Temporal distinguishability in Hong-Ou-Mandel interference for harnessing high-dimensional frequency entanglement
npj Quantum Information, Published online: 06 December 2021; doi:10.1038/s41534-021-00506-y Less entanglement exhibiting more nonlocality with noisy measurements
CAMBRIDGE, UK and BROOMFIELD, CO., Nov. 30, 2021 – The two leading companies in the quantum computing industry have combined to create Quantinuum, thereby accelerating the development of quantum computing and innovation of quantum technologies in […]
While the number of qubits and the stability of quantum states are still limiting current quantum computing devices, there are questions where these processors are already able to leverage their enormous computing power. Scientists used […]
Quantum computing is taking a new leap forward due to new research. The team of researchers have proposed a scheme to reduce the number of calculations needed to read out data stored in the state […]
Light not only plays a key role as an information carrier for optical computer chips, but also in particular for the next generation of quantum computers. Its lossless guidance around sharp corners on tiny chips […]
Physicists have developed a theory describing how space reflection and time reversal symmetries can be exploited, allowing for greater control of transport and correlations within quantum materials. Read More Quantum Computers News — ScienceDaily
Physicists said they have finally experimentally documented quantum spin liquids, a long sought-after exotic state of matter. The work marks a big step toward being able to produce this elusive state on demand and to […]
Superconducting coupling between two regions separated by a one micron wide ferromagnetic compound has been proved by an international team. This macroscopic quantum effect, known as Josephson effect, generates an electrical current within the ferromagnetic […]
Miguel Bello (MPQ):Building on last week’s discussion, I’d like to present an ongoing project of Mari Carmen and me where we try transform the long range entanglement generated after a global quantum quench into mixture.