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.
A team of researchers has proposed a deterministic hybrid protection scheme utilizing strong but feasible interactions with two-level ancillas immune to spontaneous emission. They have verified the robustness of the scheme against the dephasing of qubit ancilla.
P-computers are powered by probabilistic bits (p-bits), which interact with other p-bits in the same system. Unlike the bits in classical computers, which are in a 0 or a 1 state, or qubits, which can […]
A team of physicists at University of Colorado and NIST demonstrated that it could read out the signals from a type of qubit called a superconducting qubit using laser light, and without destroying the qubit […]
Deep-diving guide explains the basics, surveys major quantum algorithms and steps through implementing them on available quantum computers.
A team of researchers including Google Quantum AI has developed a theory suggesting that quantum computers should be exponentially faster on some learning tasks than classical machines. The scientists tested their work on Google’s Sycamore […]
Researchers at Duke University and the University of Maryland have used the frequency of measurements on a quantum computer to get a glimpse into the quantum phenomena of phase changes. By measuring the number of […]
ORCA Computing is working with the UK Ministry of Defence (MoD) to develop future data processing capabilities. In a year-long programme of activity, MoD will use ORCA’s PT-1 model, the first computer of its kind […]
Researchers working in the EU-funded PHOQUSING project are developing a hybrid computational system based on cutting-edge integrated photonics that combines classical and quantum processes. Project partner QuiX Quantum in the Netherlands has created the largest […]
Dr Anna Kowalczyk, Assistant Professor at the University of Birmingham’s Centre for Human Brain Health, is one of 15 researchers awarded funding from the Engineering and Physical Sciences Research Council (EPSRC) to tackle key quantum […]
To overcome the limitations of current quantum computers, researchers at Pacific Northwest National Laboratory (PNNL) are developing simulations that provide a glimpse into how quantum computers work.
Covestro, one of the world’s leading polymer companies, and QC Ware have announced the signing of a five-year collaboration agreement. The objective of the collaboration is to help prepare Covestro to fully deploy quantum algorithms for the discovery of new materials […]
Superconductors are used in a wide range of domains, from medical applications to a central role in quantum computers. Superconductivity is caused by specially linked pairs of electrons known as Cooper pairs. So far, the […]
A team of researchers from Xanadu and the NIST is claiming that their quantum computer, Borealis, has achieved computational advantage in taking on the boson sampling challenge. The researchers took on the challenge using a […]
Extending the field of quantum metrology i.e., magnetometry, electrometry, and thermometry to the atomic scale requires robust sensors with high sensitivity and spatial resolution. Optically addressable spins in diamond are excellent candidates as they often […]
Ultrashort infrared light pulses are the key to a wide range of technological applications. The oscillating infrared light field can excite molecules in a sample to vibrate at specific frequencies, or drive ultrafast electric currents […]
In a special arrangement of atomic spins, Max Planck physicists have measured the properties of the so-called Haldane phase in an experiment. To do so, they used a quantum mechanical trick. In some materials, there […]
Engineers are developing commercial microphones focus on eliminating technical sources of noise, such as that found in the signal amplifiers. But even when the technical noise sources are addressed, there is still a fundamental noise stemming […]
A time crystal is a macroscopic quantum system in periodic motion in its ground state. In our experiments, two coupled time crystals consisting of spin-wave quasiparticles (magnons) form a macroscopic two-level system. The two levels evolve in time as determined intrinsically by a nonlinear feedback, allowing us to construct spontaneous two-level dynamics. In the course of a level crossing, magnons move from the ground level to the excited level driven by the Landau-Zener effect, combined with Rabi population oscillations. We demonstrate that magnon time crystals allow access to every aspect and detail of quantum-coherent interactions in a single run of the experiment. Our work opens an outlook for the detection of surface-bound Majorana fermions in the underlying superfluid system, and invites technological exploitation of coherent magnon phenomena – potentially even at room temperature.
Researchers at University of Geneva (UNIGE) and CEA have presented new protocols for Quantum Key Distribution (QKD) in a prepare-and-measure setup with an asymmetric level of trust. While the device of the sender (Alice) is […]
A team of researchers have presented the Scaled QUantum IDentifier (SQUID), an open-source framework for exploring hybrid Quantum-Classical algorithms for classification problems. The classical infrastructure is based on PyTorch and they provide a standardized design […]
Research in Quantum Machine Learning (QML) has focused primarily on variational quantum algorithms (VQAs), and several proposals to enhance supervised, unsupervised and reinforcement learning (RL) algorithms with VQAs have been put forward. Out of the […]
Bandwidth and energy are two fundamental resources needed to exchange information. In digital communication, information is encoded in a finite set of physical states known as symbols. In optics, modulated laser pulses are often used […]
Researchers at QuTech in Delft have succeeded in teleporting quantum information across a rudimentary network. This first of its kind is an important step towards a future quantum internet. This breakthrough was made possible by […]
A team of experimental physicists, at the University of Innsbruck, Austria, has implemented a universal set of computational operations on fault-tolerant quantum bits for the first time, demonstrating how an algorithm can be programmed on […]
Based on the so-called Quantum Key Distribution (QKD), researchers at TU Darmstadt have developed a new, tap-proof communication network. The new system is used to exchange symmetric keys between parties in order to encrypt messages […]