Your premier source for quantum computing news, research, and industry developments.
Most people think of diamonds as high-end adornments. Not Ania Bleszynski Jayich. The UC Santa Barbara physicist sees diamonds, which she grows in the UC Quantum Foundry, as a…
Yuval Boger interviews mathematician Gil Kalai about his long-standing skepticism regarding scalable quantum computing. Kalai explains two main arguments behind his theory:…
Quantum mechanics tells us that a particle can never be perfectly still. But how precisely can it be oriented? A research team at the University of Vienna, together with…
As Beijing’s 15th Five-Year Plan designates quantum as the country’s top “future industry,” two startups close ~$145 million rounds within days of…
Insider Brief Chinese quantum startup QBoson has raised CNY 1 billion — or about $145 million USD — to expand chip production and scale its quantum computing systems,…
The electrons that power our society flow left and right through the circuitry in our electronics, back and forth along the transmission lines that make up our power grid, and up…
Q-Factor, a Tel Aviv-based quantum hardware startup, has exited stealth with $24 million (USD) in seed funding to develop a million-qubit neutral atom quantum computer. The…
Insider Brief PRESS RELEASE — Q-Factor, a neutral atom quantum computing company, today announced $24 million in seed funding. The round was led by NFX and TPY Capital, with…
Insider Brief The relationship between quantum computing and cryptography represents one of the most consequential technological races of the coming decade. On one side stands the…
Insider Brief PRESS RELEASE — Imagine you’re trying to build a very long, complicated chain of dominoes. The aim is that each domino hits the next one perfectly, all the way…
arXiv:2604.02416v1 Announce Type: new Abstract: Quadratic unconstrained binary optimization (QUBO) provides problem formulations for various computational problems that can be…
arXiv:2604.02417v1 Announce Type: new Abstract: We develop a rigorous system-agnostic method to predict quantum thermalization in an overwhelming fraction of accessible pure…
arXiv:2604.02420v1 Announce Type: new Abstract: Recent efforts have focused on characterizing the set of separable states that cannot be made entangled by any global unitary…
arXiv:2604.02428v1 Announce Type: new Abstract: Entanglement purification protocols are fundamental primitives in quantum communication, enabling the distillation of high-quality…
arXiv:2604.02439v1 Announce Type: new Abstract: The dimensionality of entanglement, quantified by the Schmidt number, is a valuable resource for a wide range of quantum…
arXiv:2604.02484v1 Announce Type: new Abstract: Quantum and classical systems can consistently be coupled via non-unitary time-irreversible mechanisms. In this paper we…
arXiv:2604.02530v1 Announce Type: new Abstract: Matrix multiplication (MatMul) is the computational backbone of modern machine learning, yet its classical complexity remains a…
arXiv:2604.02536v1 Announce Type: new Abstract: Perfect quantum state transfer is achievable in different settings, including linear qubit chains, bi-dimensional arrays, ladders,…
arXiv:2604.02569v1 Announce Type: new Abstract: We introduce RFOX (Rotated-Field Oscillatory eXchange), a parameter-free quantum algorithm for combinatorial optimization. RFOX…
arXiv:2604.02635v1 Announce Type: new Abstract: Within a unified framework, we reveal that the seemingly disparate control approaches for classical and quantum continuous-variable…
arXiv:2604.02731v1 Announce Type: new Abstract: A central challenge in the theory of open quantum systems is the development of theoretical frameworks capable of accurately…
arXiv:2604.02741v1 Announce Type: new Abstract: While non-Markovian dynamics have been extensively studied in the single-excitation limit to predict non-trivial phenomena, this…
arXiv:2604.02793v1 Announce Type: new Abstract: A major open problem in understanding shallow quantum circuits (QAC$^0$) is whether they can compute Parity. We show that this…
arXiv:2604.02809v1 Announce Type: new Abstract: Superconducting qubits are compelling platforms for charge-parity detection and, due to their theoretical sensitivity on the meV…
arXiv:2604.02854v1 Announce Type: new Abstract: We explore the applicability of a stochastic time-evolution algorithm based on probabilistic angle interpolation. To simplify the…
arXiv:2604.02873v1 Announce Type: new Abstract: We study how to implement and transform frame perspectives for quantum processes in the process-matrix formalism. We argue that,…
arXiv:2604.02874v1 Announce Type: new Abstract: We present a unified algorithmic framework for quantum simulation of non-unitary dynamics and matrix functions, governed by the…
arXiv:2604.02924v1 Announce Type: new Abstract: We propose a protocol for generating magnonic squeezed states (MSS) and their superpositions (SMSS) in a hybrid system comprising a…
arXiv:2604.02962v1 Announce Type: new Abstract: Geometric quantum computation offers a potential route to fault-tolerant quantum information processing by exploiting the global…
arXiv:2604.03005v1 Announce Type: new Abstract: As the most massive particle in the Standard Model, the top quark's exceptionally short lifetime preserves its spin polarization…
arXiv:2604.03116v1 Announce Type: new Abstract: A novel design is presented for a permanent magnet array to address specific challenges with scalable trapped-ion quantum computing…
arXiv:2604.03155v1 Announce Type: new Abstract: Distributing entanglement to distant parties in a network is a central task in quantum information processing and quantum…
arXiv:2604.03184v1 Announce Type: new Abstract: Contact processes play an important role in classical non-equilibrium dynamics, describing the spreading of diseases, the dynamics…
arXiv:2604.03214v1 Announce Type: new Abstract: Nelson's stochastic mechanics may be understood as a stochastic underpinning, or reconstruction, of nonrelativistic quantum…
arXiv:2604.03228v1 Announce Type: new Abstract: Belief propagation (BP) provides a scalable heuristic for contracting tensor networks on loopy graphs, but its success in quantum…
arXiv:2604.02584v1 Announce Type: cross Abstract: We introduce the fermionized time-dependent Hartree-Fock (fTDHF), a real-time quantum dynamics method for spin-1/2 Hamiltonians…
arXiv:2604.02777v1 Announce Type: cross Abstract: We study QED$_2$ in de Sitter space as a minimal interacting gauge theory in which cosmological expansion directly competes with…
arXiv:2604.02856v1 Announce Type: cross Abstract: 't Hooft anomalies impose fundamental constraints on quantum matter and often lead to emergent symmetry structures upon gauging.…
arXiv:2604.03148v1 Announce Type: cross Abstract: The absorption of light by materials is one of the most fundamental processes in optics and condensed-matter physics. Here we…
arXiv:2401.11294v2 Announce Type: replace Abstract: The phenomenon of Hilbert space fragmentation, whereby dynamical constraints fragment Hilbert space into many disconnected…
arXiv:2406.10832v4 Announce Type: replace Abstract: Stern-Gerlach interferometer (SGI) is a kind of matter-wave interferometer driven by magnetic field and has been proposed for…
arXiv:2501.12447v5 Announce Type: replace Abstract: The precise one-shot characterisation of operational tasks in classical and quantum information theory relies on different…
arXiv:2505.12724v2 Announce Type: replace Abstract: The Josephson junction is the fundamental nonlinear building block of superconducting quantum technologies. Its macroscopic…
arXiv:2506.22755v2 Announce Type: replace Abstract: Quantum information is typically fragile under measurements and environmental coupling. Remarkably, we find that its lifetime…
arXiv:2507.23322v2 Announce Type: replace Abstract: We rigorously analyze the non-equilibrium thermodynamic behavior of various formulations of quantum Brownian motion (QBM) using…
arXiv:2508.09103v3 Announce Type: replace Abstract: A quantum thermodynamic system is described by a Hamiltonian and a list of conserved, non-commuting charges, and a fundamental…
arXiv:2508.18468v3 Announce Type: replace Abstract: The description of the entanglement dynamics of monitored noninteracting fermions, including the existence of…
arXiv:2508.19245v4 Announce Type: replace Abstract: We introduce new algorithms and provide example constructions of stabilizer models for the gapped boundaries, domain walls, and…
arXiv:2509.03043v4 Announce Type: replace Abstract: A fundamental challenge in quantum resource theory is to establish operational interpretations by quantifying the advantage…
arXiv:2509.13247v2 Announce Type: replace Abstract: We demonstrate a logical neutral atom architecture that integrates atom motion with in-place entanglement to achieve lower…
arXiv:2511.09430v2 Announce Type: replace Abstract: Entanglement classification of pure multipartite quantum states is a challenging problem in quantum information theory that can…
arXiv:2511.22608v2 Announce Type: replace Abstract: Modified divacancies in the 4H polytype of silicon carbide (SiC) exhibit enhanced charge stability and spin addressability at…
arXiv:2512.07160v2 Announce Type: replace Abstract: We investigate complex self-testing, a generalization of standard self-testing that accounts for quantum strategies whose…
arXiv:2601.19777v3 Announce Type: replace Abstract: Non-Hermitian systems exhibit spectral and topological phenomena absent in Hermitian physics; however, their geometric…
arXiv:2603.02804v2 Announce Type: replace Abstract: While real quantum devices have been increasingly used to conduct research focused on achieving quantum advantage or quantum…
arXiv:2603.11300v2 Announce Type: replace Abstract: We analyze many-body entanglement in interacting fermionic systems by using the $M$-body reduced density matrix. We demonstrate…
arXiv:2603.14144v2 Announce Type: replace Abstract: Precise characterization of the local spin environment of single diamond nitrogen-vacancy (NV) centers is crucial for advancing…
arXiv:2603.22416v2 Announce Type: replace Abstract: We study magnetic materials whose low energy physics can be effectively described by a Dicke model, which we term Dicke…
arXiv:2603.26039v2 Announce Type: replace Abstract: Grover's algorithm is a fundamental quantum algorithm that achieves a quadratic speedup for unstructured search problems of…
arXiv:2604.00212v2 Announce Type: replace Abstract: Continuous variable (CV) quantum computation offers an alternative to qubit-based computing by exploiting the…