Know What's Happening in Quantum
Know What's Happening in Quantum
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QuiX Quantum Achieves First Below‑Threshold Error Mitigation on Photonic Processor
QuiX Quantum announced a breakthrough on its 20‑mode photonic quantum computer, delivering the first below‑threshold error mitigation. The new photon‑distillation gate cut photon‑indistinguishability error by 2.2× and lowered overall system error by 1.2×. The work involved collaborators from NASA’s Quantum AI Lab, the University of Twente and Freie Universität Berlin.
Also developing:
By the numbers: Monarch Quantum raises $55M Series A
Nexus unveiled a global platform, built with Global Quantum Intelligence, to connect quantum and deep‑tech startups with verified investors, adding a technical verification layer that audits claims and benchmarks performance. The service, already hosting over 45 companies and $350 million in funding during its soft launch, uses dashboards and a match‑strength algorithm to prioritize introductions and also verifies investor credibility. An advisory board of industry leaders will guide international expansion into regions like South Korea, while a tiered subscription model offers varying levels of access for community members to institutional investors.
SpinQ Technology announced a Series C round that raised hundreds of millions of RMB, earmarked for scaling its superconducting quantum chip line and advancing error‑correction, measurement, and control hardware toward a 100‑qubit processor. The funding supports a dual‑track strategy: exporting portable,...
I am very excited to share my latest paper from the quantum computing summer https://t.co/opr4pp9EVc In collaboration w/ Luke Coffman, @Nahuel_L_Diaz, @MartinLaroo, and the one and only Maria Schuld from @XanaduAI The punchline: quantum phase space isn’t just a pretty...
Scientists at the University of Nottingham have 3D‑printed titanium alloy surfaces with intricate hexagonal and conical textures that steer gas particles away from quantum sensors. By integrating these patterns into a surface‑based vacuum pump, they achieved a 3.8‑fold increase in...
Scientists Yokomizo, Clerk and Ashida present a theoretical framework for continuous quantum metrology using multimode bosonic systems under Gaussian measurements. They derive analytical bounds for global and environmental quantum Fisher information, showing Heisenberg‑type scaling with mode number but only linear...
Keyfactor and IBM Consulting have unveiled a joint solution that streamlines post‑quantum cryptography (PQC) readiness for enterprises. The offering blends Keyfactor’s automated cryptographic discovery, PKI lifecycle management, and digital signing with IBM Consulting’s cybersecurity governance, quantum‑safe delivery frameworks, and AI‑driven...
Researchers at the CEA‑Irig Pheliqs lab have identified specific magnetic‑field orientations, termed “sweet spots,” that render silicon hole spin qubits insensitive to electrical charge noise while preserving fast electric‑driven control. Experiments on single‑hole quantum dots demonstrated a marked increase in...
Researchers at Universität Siegen and Innsbruck introduced a device‑independent protocol to certify quantum memories by analyzing temporal correlations. Using a trapped‑ion processor they verified 35 ms of qubit storage, demonstrating violations of causal inequalities that cannot be explained by classical models....
Researchers at Peking University have demonstrated a silicon‑on‑chip photodetector that directly converts optical orbital angular momentum (OAM) into electrical currents. The device covers topological charges from –9 to +9, achieving a record‑high OAM responsivity of 226 nA W⁻¹. By employing momentum‑matched plasmonic...
Zapata Quantum CEO Sumit Kapur addressed global leaders at the World Economic Forum in Davos, stressing that quantum computing’s next phase hinges on reliable, hardware‑agnostic applications rather than hardware alone. The publicly traded pure‑play software firm highlighted its portfolio of...
Researchers have demonstrated coherent coupling between free electrons and a trapped‑ion quantum computer by integrating a transmission electron microscope with a planar ion trap. Individual electrons, focused to nanometer scales, can induce qubit excitations with bit‑flip probabilities up to 0.1–1...
The World Economic Forum highlighted quantum computing as a potential solution to the rising energy demands of data‑centres and AI workloads. By exploiting reversible quantum algorithms, the technology can theoretically bypass Landauer’s limit that forces energy loss in classical bit...
Melo, Paraguassú, Duarte Queirós and colleagues introduce the Conditional Quantum Fisher Information (CQFI), a trajectory‑level extension of Fisher information that merges information geometry with stochastic thermodynamics. The CQFI separates into population, basis‑rotation, and a transient interference term, the latter capable of...
Scientists have demonstrated a robust method for growing epitaxial aluminium films on indium‑gallium arsenide (InGaAs) using molecular‑beam epitaxy at near‑room temperature. By depositing aluminium at 3 Å s⁻¹ onto a 14 °C substrate, they achieved continuous, superconducting layers with no detectable indium interdiffusion....
Researchers introduced a "quantum qualifier" metric to decide when quantum‑enhanced deep neural networks (QDNNs) should replace classical deep neural networks (CDNNs) in hadronic physics analyses. Applied to deeply virtual Compton scattering data, the qualifier evaluates data complexity, noise, and dimensionality,...
The authors expose the growing infeasibility of classical simulation for large‑scale quantum software and introduce a suite of software‑engineering techniques that operate directly on real quantum hardware. They advocate circuit simplification, property‑based testing, and assume‑guarantee decomposition to create scalable test...
Researchers Aytekin, Nomeir, Hu, and Ulukus prove that good quantum codes used for classical communication possess a unique optimal output distribution. They show that as block length grows, the empirical output distribution of such codes converges to this optimum, mirroring...
Researchers at Quix Quantum have demonstrated leaking quantum walks on an integrated photonic processor, introducing controllable absorbing boundaries. The experiments show that homogeneous losses at a lattice edge reshape the walker’s probability distribution, with absorption strength directly influencing coherence and...
Researchers led by H. Witala have demonstrated that Bell‑state entanglement can be generated in unpolarized proton‑proton scattering and deuteron‑breakup reactions, providing a realistic route to quantum‑state teleportation among protons. Using the AV18 nucleon‑nucleon potential, they identified energy and angular regimes where...
Europe has launched the €50 million Photonics for Quantum (P4Q) pilot line, a joint EU and national effort coordinated by the University of Twente to industrialize quantum photonic chips for computing, sensing, and secure communications. The consortium of 29 partners will...
Researchers at IIT Madras have identified localizable entanglement (LE) as a robust order parameter for measurement‑induced phase transitions (MIPTs). Their analysis demonstrates universal finite‑size scaling of LE, with a diverging entanglement correlation length ξ_E at a critical measurement probability around...
Scientists at Ariel University have built an ultra‑compact, low‑cost two‑mode squeezed‑light source operating at 795 nm using four‑wave mixing in hot rubidium vapor. The modular system, driven by only 300 mW of pump power, achieves up to –8 dB of intensity‑difference squeezing at...
Physicists have proved that any complete tower of many‑body scar states that are exact eigenstates of a local Hamiltonian must exhibit equally spaced energy levels. The theorem holds for k‑local interactions on arbitrary bounded‑degree graphs, extending beyond simple lattice models...
The episode explains how King Abdullah University of Science and Technology (KAUST) has launched Saudi Arabia’s first shared‑access quantum foundry, a dedicated clean‑room facility for reproducible, commercial‑grade quantum hardware. It highlights the use of Process Design Kits to standardize design...
A team led by El‑Charles Bordenave, Cyril Letrouit and Mostafa Sabri has proved quantum mixing on large Schreier graphs that converge to infinite Cayley graphs. The proof hinges on the limiting Cayley graph having an absolutely continuous spectrum, eliminating the...
Researchers at USC introduced Q2O, a quantum‑augmented query optimiser that embeds quantum annealing into PostgreSQL’s planning phase. By encoding join‑order problems as a nonlinear model solvable by low‑latency NL‑Solver hardware, Q2O delivers real‑time optimisation with sub‑5‑second runtimes. Experiments on the...
Researchers introduced an inverse quantum simulation (IQS) framework that flips traditional quantum‑material studies by starting with desired properties and working backward to a Hamiltonian. The method encodes target characteristics in a cost function, minimizes it on programmable quantum hardware, and...
Researchers have introduced a hybrid quantum‑classical Benders decomposition algorithm that reformulates the MILP master problem as a QUBO solved on a D‑Wave quantum annealer while handling subproblems classically. The approach incorporates novel embedding techniques, conservative cut‑constraint handling, and a refined...
Researchers applied quantum‑kernel machine learning to autonomous materials discovery, using X‑ray diffraction patterns from a Fe‑Ga‑Pd alloy library on IonQ’s Aria trapped‑ion quantum computer. By integrating Gaussian‑process‑based active learning, the quantum model navigated the compositional phase space with far fewer...
Researchers Wong, Yamazaki, Siefert and collaborators introduced a numerically efficient real‑space framework for classifying topological phases of aperiodic materials. The approach combines spectral localizers with direct Pfaffian sign computation, delivering a local, energy‑resolved \(\mathbb{Z}_2\) invariant without requiring translational symmetry, bulk...
Researchers have shown that ferroelastic domain walls in strontium titanate (SrTiO₃) are active participants in electron transport, exhibiting emergent polar order, glass‑like relaxations and memory effects. Using resonant piezospectroscopy, electric‑field‑dependent optical imaging, scanning SQUID and single‑electron‑transistor microscopy, they visualized wall...
Researchers theoretically demonstrated that a spin qubit in a parabolic quantum wire, driven by a bichromatic field, exhibits a confinement‑tunable synthetic gauge field leading to Floquet topological phenomena. Varying the confinement strength triggers a topological Landau‑Zener transition, changing interference patterns...
Researchers at IIIT Hyderabad and TATA Consultancy Services introduced a physics‑informed Generative Adversarial Network (GAN) that treats quantum resource‑state creation as an inverse‑design problem. By enforcing Hermiticity, trace‑one, and positivity during training, the GAN reliably reproduces Werner‑like and Bell‑diagonal states...
Researchers introduced AlphaSyndrome, an automated framework that optimizes syndrome‑measurement scheduling for general commuting‑stabiliser quantum error‑correction codes. By leveraging Monte Carlo Tree Search and decoder feedback, the system reshapes error‑propagation pathways, achieving an average logical‑error‑rate reduction of 80.6% and up to 96.2%...
A new study shows that graph‑based quantum systems lacking intrinsic geometry must encode directional information using qubits (ℂ²). By applying SU(2) representation theory, the authors prove that this minimal encoding forces a three‑dimensional Euclidean space via the Bloch sphere. The...
UC Santa Barbara researchers led by Stephen Wilson have shown that magnetic and bond frustration can coexist in a triangular‑lattice antiferromagnet, creating a dual‑frustrated system. By embedding lanthanide moments in a crystal that also hosts strained dimer bonds, they demonstrated that tiny...
Researchers from Wrocław University of Science and Technology and the University of Münster have theoretically demonstrated strong coupling between quantum dots and gigahertz phononic crystal waveguides, achieving energy shifts up to 0.7 meV. By combining k·p and configuration‑interaction modeling, they show...
Ability Engineering Technology (AET) has become a corporate partner of the Chicago Quantum Exchange to provide high‑precision cryogenic, vacuum, and pressure‑vessel hardware essential for scaling superconducting and silicon quantum processors. The partnership aims to eliminate engineering bottlenecks in moving quantum...
Researchers from Nanjing and Bohai Universities introduced GPUTB‑2, an E(3)-equivariant neural network that learns orthogonal Hamiltonians without the O(N³) orthogonalization bottleneck of traditional LCAO methods. The model, built with only 0.35 million parameters, reduces mean absolute error on the DeePTB benchmark...
Scientists at the National University of Singapore have shown that atomic‑scale substitutional dopants in two‑dimensional transition‑metal dichalcogenides can act as stable quantum defects with terahertz‑range zero‑field splitting. High‑throughput first‑principles simulations of 50 MoS₂ and WSe₂ monolayers identified several spin‑triplet defects...
The paper outlines a roadmap for transitioning X.509 PKI to post‑quantum cryptography, detailing required changes to certificates, CRLs, and OCSP. It evaluates leading PQ algorithm families—lattice, code, hash, multivariate, and isogeny—against NIST security levels, highlighting Kyber, Dilithium, Falcon, and SPHINCS+...
University of Oxford engineers quantum‑enabled proteins, creating magneto‑sensitive fluorescent proteins (MFPs) that respond to magnetic and radio‑frequency fields when illuminated. Published in Nature, the study demonstrates deliberate design of quantum mechanical processes inside biomolecules, moving beyond observation of natural quantum...
The research team demonstrated a programmable 780‑nm laser locked to a photonic‑integrated PZT‑on‑SiN resonator, achieving up to 1 GHz V⁻¹ tuning strength and 11 MHz modulation bandwidth while consuming only ~10 nW. Using this source, they performed rubidium‑87 spectroscopy and realized sub‑Doppler cooling to...
WISeKey International unveiled SEALCOIN, a space‑based, quantum‑resistant crypto platform, at Davos 2026. The system uses the WISeSat low‑Earth‑orbit constellation to generate cryptographic signatures directly onboard satellites, extending blockchain transactions beyond terrestrial networks. Its native QAIT token will fuel machine‑to‑machine value exchange,...
Researchers at UNSW Sydney have demonstrated room‑temperature, optically detected coherent control of organic molecular spins combined with microscopy to map spatial coherence in pentacene‑doped p‑terphenyl thin‑films and crystals. The study reveals that thin‑films exhibit up to 7.6 % variability in magnetic‑field...
Northwestern researchers have demonstrated that in multi‑user quantum communication networks, increasing the amount of shared entanglement can paradoxically degrade overall fidelity when each pair routes selfishly. By modeling non‑cooperative routing decisions, they showed that mixed entangled states generate a quantum...
Researchers propose using a bosonic Josephson junction—ultracold atoms in a double‑well potential—as a quantum rotation sensor. Theoretical mean‑field and many‑body calculations show that rotation dramatically alters tunnelling period, momentum and angular‑momentum dynamics, enabling extraction of rotation frequency, radial displacement and...
Heilbronn University of Applied Sciences will install a 5‑qubit IQM Spark quantum computer, with commissioning slated for 2026. The system, delivered and supported by Bechtle, will be embedded in the university’s TechCampus laboratory and linked to existing IT infrastructure. Open...
Researchers introduced an "information lattice" framework to study information and entanglement transport in open, non‑interacting fermion chains governed by Lindblad master equations. By exploiting Gaussian state dynamics, they linked information currents to experimentally accessible noise and particle‑current measurements. The study...
NEW: BTQ is partnering with ITRI to build a new chip architecture for post-quantum security. $BTQ ’s QCIM targets lower-power cryptography, and is now moving into silicon validation with ITRI, the incubator behind $TSMC.
