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Daily brief

July 11, 2026.

70 quantum research items collected on 2026-07-11; hardware, control, and industry signals routed.

109 items · Quantum, Chips, Power · All briefs

Quantum

70 quantum research items collected on 2026-07-11; hardware, control, and industry signals routed.

Hardware and Error Correction

  • Plaquette: A hardware-aware design platform for fault-tolerant quantum computers

    Hardware teams building fault-tolerant quantum computers (FTQCs) must decide which imperfections to suppress, and that decision requires the logical performance of the architecture under the device's actual noise. Hardware noise often departs from the stochastic Pauli models used by scalable stabilizer simulators: superconducting transmons leak out of the computational subsp...

  • Approaching Carnot Efficiency at Finite Power in an Experimentally Feasible Quantum Heat Engine

    Whether a heat engine can approach Carnot efficiency while maintaining finite power is a fundamental question in finite-time thermodynamics. For classical Markovian heat engines with local interactions, the power-efficiency trade-off forbids an asymptotic approach to Carnot efficiency at finite power. In quantum systems, by contrast, degeneracy, symmetry, and collective jump...

  • Robust One-Sided Device-Independent Quantum Key Distribution via High-Dimensional Steering

    Quantum key distribution (QKD) brings the promise of communication with information-theoretic security but is limited in practice due to its susceptibility to noise, losses, and device imperfections. To address these challenges, we propose a robust high-dimensional (HD) one-sided device-independent QKD (1sDI-QKD) protocol and present a proof-of-principle experimental impleme...

  • Low-latency FPGA-based electronic control system for fast preparation of defect-free atom arrays

    The scalability of neutral atom quantum computing demands integrated electronic control systems with low latency, modular architecture, and real-time feedback capability. Here, we present an FPGA-based electronic control system that eliminates the PC from the feedback loop, integrating photon counting, real-time decision-making, and waveform generation within a unified PXIe...

  • Entanglement Wedge Reconstruction without Holographic Quantum Error Correction

    Bulk reconstruction is a central problem in AdS/CFT, and entanglement wedge reconstruction is its subregion version. We argue that this subregion statement should be separated from the stronger holographic quantum error correction interpretation, in which one region-independent logical bulk operator has code-preserving representatives in several boundary regions. A simple lo...

  • A Nonstabilizerness Resource Law for Universal Quantum State Purification

    Quantum state purification aims to recover higher-fidelity quantum states from multiple noisy copies and is a fundamental primitive for quantum information processing. Magic resources enable operations beyond classically simulable dynamics and are central to universal fault-tolerant quantum computation. Recent no-go results show that classically simulable operations cannot a...

  • Distributed Monogamy of Entanglement limits Quantum Channel Simulation

    Entanglement is monogamous: if it is shared among more than two parties, the entanglement between any pair cannot be very strong. For an integer $k\geq 2$, $k$-extendibility of a state $ρ_{AB}$ quantifies this as the number of copies of $B$ that can be simulated by the state's environment. We introduce fractional extendibility, which gives a finer characterization of the qua...

  • Universality of Measurement-Induced Criticality under Symmetry-Breaking Measurements

    We study the critical properties of random quantum circuits with a $U(1)$ symmetry subject to local projective measurements that explicitly break this symmetry. We find that, at the measurement-induced phase transition, symmetry-breaking measurements act as a relevant perturbation at large scales, leading to the same universal critical properties as the corresponding monitor...

Control and Quantum-AI Integration

  • Grokking and epoch-wise double descent in quantum neural networks

    Grokking, the delayed transition from memorization to generalization, is a fundamental phenomenon in gradient-based learning, yet its dynamics within variational quantum machine learning (QML) remain largely unexamined. In this work, we report the empirical observation of both the grokking transition and epoch-wise double descent in a two-qubit quantum neural network (QNN) u...

  • Full-Spectrum Quantum Simulation for the Nuclear Shell Model

    The nuclear shell model is a general way of expressing the many-body nuclear Hamiltonian and deciphering the underlying nuclear structure. In today's era of modern and high-power computation, the primary limitation of the nuclear shell model is the enormous dimensionality of its Hilbert space, which far exceeds available storage capacity and prevents the diagonalization of t...

  • BTQ Technologies and ICTK Finalize Architecture for Next-Generation Post-Quantum Security Chip

    <p>Global quantum-safe engineering firm BTQ Technologies Corp. (Nasdaq: BTQ) has finalized the technical design phase for its next-generation hybrid security processor. Developed in direct cooperation with South Korean secure-element pioneer ICTK Co., Ltd. (KOSDAQ: 456010), the system architecture marks a structural milestone by integrating post-quantum cryptography (PQC) ac...

  • Google Study Shows Quantum Computer Can Learn From Its Own Errors While It Computes

    <a href="https://thequantuminsider.com/2026/07/10/google-study-shows-quantum-computer-can-learn-from-its-own-errors-while-it-computes/" rel="nofollow" title="Google Study Shows Quantum Computer Can Learn From Its Own Errors While It Computes"><img alt="Google Quantum" class="webfeedsFeaturedVisual wp-post-image" height="858" src="https://thequantuminsider.com/wp-content/uplo...

Commercial and Industry Context

Unrouted Items

  • Typicality of Steering for Two-qubit States

    Phenomena that slip beyond the grasp of our classical intuition reveal uniquely quantum effects that deepen our understanding of the physical world and enable advances in information processing, particularly in quantum communication and computation. One such phenomenon is quantum steering, whereby measurements performed by one party influence the conditional states of anothe...

  • Irreducible Geometry of Higher-Order Correlator Families

    Programmable quantum simulators are beginning to access correlators of increasing complexity, ranging from four-point out-of-time-ordered correlators to even higher-order many-body correlators. The theoretical framework for interpreting such data, however, remains comparatively underdeveloped. Although a variety of higher-order correlators can be constructed straightforwardl...

  • Hockey stick $f$-divergences

    In this paper we give a systematic and unified treatment and extensions of various results on a new notion of quantum $f$-divergences defined from quantum hockey stick divergences, the theory of which has been developed recently in \cite{BHT_fdiv,HircheTomamichel_integral,LiuHircheCheng2025}. In particular, we consider non-normalized states and hockey stick $f$-divergences d...

  • Absence of quantum advantage for approximate spin glass optimization

    We perform a semiclassical, large-spin S, analysis of the quantum approximate optimization algorithm (QAOA) on the Sherrington-Kirkpatrick (SK) model, using the truncated Wigner approximation. Fixing the QAOA angles to their previously determined optimal S=1/2 values, we observe a non-monotonic dependence of the final energy on the spin. At small S the semiclassics is domina...

  • Quantifying randomness with measurement incompatibility

    We present a trade-off between the amount of observed measurement incompatibility and the capabilities of a classical Eavesdropper in a prepare-and-measure scenario. The result is based on a qualitative connection between measurement incompatibility and randomness generation together with the utilization of incompatibility witnesses as randomness certificates. This allows on...

  • Instability of the undecidable behavior of the spectral gap in 1D

    The problem of determining the existence of a spectral gap in a lattice quantum spin system was previously shown to be undecidable for one [J. Bausch et al., "Undecidability of the spectral gap in one dimension", Physical Review X 10 (2020)] or more dimensions [T. S. Cubitt et al., "Undecidability of the spectral gap", Nature 528 (2015) and Forum of Mathematics Pi, 10 (2022)...

  • Temperature Beyond Equilibrium in Isolated Quantum Many-Body Systems and Their Subsystems

    Temperature is one of the central concepts of thermodynamics, yet its meaning away from equilibrium remains elusive. This problem is particularly acute in isolated quantum many-body systems: their states evolve unitarily, need not be close to equilibrium, and can retain energy coherence, a feature with no classical thermodynamic analogue. A non-stationary quantum state conta...

  • Extracting conformal data from Loschmidt echoes after critical quenches

    Conformal field theory provides universal predictions for Loschmidt amplitudes following quenches from product states to critical Hamiltonians. Building on this observation, we develop a route to extracting conformal data from real-time dynamics without preparing critical low-energy states. After analytic continuation, the Loschmidt amplitude is described by a boundary-CFT p...

  • Symmetry as a route to generalized bosonic Kitaev chains

    The bosonic Kitaev chain (BKC) model is a deceptively simple looking quadratic pairing Hamiltonian. Despite being purely Hermitian, it exhibits a number of striking non-Hermitian topological phenomena, including skin effects. We show here how symmetries play a key role in this model, and how identifying these allows one to develop generalized BKC-like models. We emphasize th...

  • Triangulene-based diradicals as a blueprint for molecular quantum platforms with optical addressability and long spin coherence times

    The identification of molecules that combine long spin coherence times and efficient spin-optical interfaces, ideally at room temperature, is pivotal towards the development of molecular quantum technology. By means of advanced first-principles methods, we here unravel the electronic structure for triangulene (1), its aza-cation derivative (2), and the crystal of 2,6,10-tri-...

  • Operational meaning of Markov gap in tripartite entanglement of quantum dynamics

    We investigate how irreducible multipartite entanglement, a long-range correlation by nature, can emerge from short-range dynamics far from equilibrium. Focusing on the Markov gap as a probe of irreducible tripartite entanglement (IrTE) in free-fermion chains, we uncover qualitatively distinct dynamical behaviors: the Markov gap grows either quasi-linearly or in staircase-li...

  • Renormalization flows for 1D mixed states and a quantum Goursat lemma

    Renormalization provides a framework for relating microscopic models of physical systems to effective descriptions at larger length scales. This procedure is studied for the boundary states of non-chiral two-dimensional topologically ordered models. The initial data consist of renormalization fixed points built from representations of finite-dimensional $C^*$-Hopf algebras,...

  • QSCOUT's Qubit-Boson Gate Set

    The Quantum Scientific Computing Open User Testbed (QSCOUT) has developed a qubit-boson gate set for hybrid continuous-discrete variable (CV-DV) quantum computing. This document outlines how to utilize these gates on QSCOUT using Just Another Quantum Assembly Language, Jaqal\textsuperscript{TM}.

  • An Effective Quantum Hoare Logic for Hybrid Quantum Programs with Unbounded Loops

    While quantum hardware remains limited, hybrid quantum-classical algorithms with complex control structures, including unbounded loops, are emerging, posing new challenges for quantum program analysis, including the accurate estimation of the resource consumption of a given program. Meanwhile, precise analysis techniques such as symbolic execution have largely left out hybri...

  • The Langevin-equation description of optomechanics with the dispersive and dissipative optomechanical coupling

    The description of the optomechanical system is commonly based on the quantum Langevin equation formalism. This framework is introduced phenomenologically or based on a model Hamiltonian. However, once dealing with the optomechanical Fabry-Perot cavity or the modified Michelson-Sagnac interferometer with a semitransparent mechanically active membrane inside, a model-free con...

  • Quantum Communication Lower Bounds for Search Problems via Matrix Discrepancy

    We study one-way quantum communication lower bounds for search problems. Unlike decision problems, search problems can have many valid outputs, which pose a fundamental barrier to standard quantum lower-bound techniques. We overcome this by developing a novel method based on matrix discrepancy, which allows us to bound the output measurements of a quantum protocol jointly. A...

  • Non-Hermitian topology driven by an identity term: An exactly solvable paradigm

    An identity term in the Hamiltonian is conventionally regarded as spectrally inert-it shifts energies but does not alter eigenstate topology. We show that under non-Hermitian skin pumping, this paradigm fails: a momentum-dependent identity term actively deforms the generalized Brillouin zone, thereby challenging established topological criteria that rely on fixed complex con...

  • Optimizing and Certifying Multipartite Permutationally Invariant Bell Inequalities

    Multipartite Bell nonlocality provides a device-independent probe of many-body quantum correlations, but its characterization is limited by the rapid growth of the underlying classical and quantum optimization problems. We develop a scalable method for constructing and certifying permutationally invariant Bell inequalities using only one- and two-body correlators. The constr...

  • Exactly solved Schrödinger equations with time-dependent Hamiltonians

    We present the analytical, exact, explicit, and assumption free formulas for the evolution operators corresponding to four instances of time-dependent Hamiltonians relevant to quantum spin batteries including two stochastic cases. We demonstrate how to recover and go beyond existing expansions and approximations directly from the exact solutions giving, for example, an expli...

  • Simulation of exchange coupling effects in double quantum dot FinFET-like structures

    By leveraging a GPU-accelerated Schrödinger-Poisson (SP) solver, we characterize exchange coupling in a hole spin double-qubit device involving a double quantum dot (DQD) system formed inside a 5-gate silicon fin field-effect transistor (FinFET) similar to real experimental structures. The self-consistent SP simulations rely on a finite difference discretization of the 3D vo...

  • Global Precision Limits in Critical Quantum Metrology: From Cramér-Rao to Ziv-Zakai

    Critical quantum metrology with equilibrium states predicts quantum-enhanced sensitivity only in the vicinity of criticality, where large prior information about the parameter is required. By employing quantum Ziv-Zakai bounds, we derive a limit on the mean-square error in critical quantum metrology. For second-order quantum phase transitions, we show that the precision pred...

  • Efficient photo-ionizing elimination of detrimental electric fields for Rydberg atoms

    Rydberg atoms are highly sensitive to external electric fields due to their exaggerated electronic properties. This unique feature lays the foundation for many of their applications in quantum science. However, an uncontrolled stray electric field can be detrimental, severely degrading their quantum control. In this work, we demonstrate a universal scheme that relies on the...

  • The Geometry of Quantum Complexity in Open Systems

    We extend Nielsen's geometric approach for quantum complexity from closed to open quantum systems, whose dynamics is governed by Lindbladian evolution. In this framework, complexity is defined through an optimal-control problem on the space of mixed states, with a cost assigned to both unitary and non-unitary generators. We show that the resulting geometric structure differs...

  • Efficiently simulable quantum circuits with large entanglement, magic, and non-Gaussianity via code-compiled tensor networks

    We introduce a family of quantum circuits that possess standard indicators of classical simulation hardness including high entanglement entropy, magic, and non-Gaussianity, yet admit efficient classical simulation via matrix product states (MPS). Our construction uses logical circuits of high-rate Calderbank-Shor-Steane (CSS) codes with enhanced symmetries. Using code automo...

  • Works on My QPU: Reproducibility in Quantum Computing Research

    Quantum computing research increasingly depends on complex software stacks, yet the reproducibility of published results does not receive the priority and longevity mandated by recommendations of large international scientific bodies and best practices in software-centric systems research. In this paper, we present a combined manual and automated large-scale analysis of the...

  • Approximate eigenfunctions for some aperiodic crystals

    In this paper, we consider Hamiltonians for aperiodic crystals of the form \begin{align*} H_\varepsilon:=T(-i\nabla_x+{\mathbf A}(x,\varepsilon x))+V(x,\varepsilon x),\qquad x\in {\mathbb R}^d \end{align*} where $T$ represents either a Dirac operators or a Schrödinger operator, and $x\mapsto {\mathbf A}(x,X)$ and $x\mapsto V(x,X)$ are $\mathbb L$-periodic with respect to som...

  • Magnetic control of Goos-Hänchen shifts and group delay time in monolayer WSe$_2$

    We study the influence of an external magnetic field on the Goos-Hänchen (GH) shift and the group delay time (GDT) in monolayer WSe$_2$ in the presence of a magnetic barrier. The transport properties of Dirac-like carriers are obtained by solving the effective low-energy Hamiltonian and evaluating the corresponding transmission amplitudes. The GH shift and the GDT are subseq...

  • Wigner symmetries single out symmetric Wasserstein distances in all finite dimensions

    We study the quantum Wasserstein distances introduced by De Palma and Trevisan associated with quadratic cost operators generated by families of self-adjoint observables. We first show that an arbitrary positive semidefinite cost operator is completely determined by the restriction of the corresponding Wasserstein distance to pairs of pure states. This allows geometric invar...

  • Interplay of Quasiperiodic Criticality and the Non-Hermitian Skin Effect

    Quasiperiodic lattices can host critical eigenstates, whereas nonreciprocal hopping in non-Hermitian lattices can induce non-Hermitian skin effect. In this work, we investigate localization phenomena in a Hatano--Nelson model with quasiperiodically modulated hopping amplitudes, where nonreciprocity arises from unequal modulation strengths of the right and left hoppings. Usin...

  • Engineering Nonclassical States via the Dynamical Casimir Effect

    Nonadiabatic driving in ultrastrongly coupled light--matter systems is commonly regarded as a source of errors, as counter-rotating interactions convert vacuum fluctuations into real excitations through the dynamical Casimir effect (DCE). Here we show that, instead, the DCE can be harnessed as a resource for engineering nonclassical states of light. Considering a cavity mode...

  • Quantum linear solvers for quantum chemistry: prospects of exponential quantum advantage

    Quantum linear solvers (QLSs) can offer the potential for exponential quantum advantage in solving quantum chemical problems, but its assessment hinges on determining the condition number ($κ$) scaling, which itself is computationally challenging. While a recent work applied the Harrow-Hassidim-Lloyd (HHL) algorithm to single-reference linearized coupled cluster equations (S...

  • Möbius-Guided Diagonal-Gate Compilation with Native Multiqubit Controlled-Phase Gates on Neutral-Atom Processors

    Diagonal gates are ubiquitous primitives in quantum algorithms, from phase oracles, hypergraph-state preparation, and multi-control logic to Hamiltonian simulation of spin models and digitized lattice field theories, where Ising interactions and local potential terms are diagonal in the encoded basis. Standard compilers, however, often lower diagonal structure into one- and...

  • BTQ Technologies and ICTK Complete Design of Quantum-Secure QCIM Security Chip

    <a href="https://thequantuminsider.com/2026/07/10/btq-technologies-ictk-complete-design-next-generation-qcim-security-chip-integrating-puf-technology/" rel="nofollow" title="BTQ Technologies and ICTK Complete Design of Quantum-Secure QCIM Security Chip"><img alt="BTQ logo - TQI" class="webfeedsFeaturedVisual wp-post-image" height="738" src="https://thequantuminsider.com/wp-c...

  • Application Period Open: Fraunhofer Seeks Industry Partners for Quantum Computing Use Cases

    <a href="https://thequantuminsider.com/2026/07/10/application-period-open-fraunhofer-seeks-industry-partners-for-quantum-computing-use-cases/" rel="nofollow" title="Application Period Open: Fraunhofer Seeks Industry Partners for Quantum Computing Use Cases"><img alt="Fraunhofer" class="webfeedsFeaturedVisual wp-post-image" height="315" src="https://thequantuminsider.com/wp-c...

Chips

45 chip stack items collected on 2026-07-11; memory, packaging, compute, and foundry signals routed.

Compute Accelerators

Foundry, Tools, and Capex

Unrouted Items

Power

22 power layer items collected on 2026-07-11; data center load, grid, generation, and cooling signals routed.

Data Center Power Demand

Grid and Generation

Unrouted Items

  • U.S. refining capacity decreased during 2025

    U.S. operable atmospheric distillation capacity, the primary measure of refinery capacity, totaled 18.2 million barrels per calendar day (b/cd) on January 1, 2026-down over 250,000 b/cd (about 1%) compared with January 1, 2025-according to our latest annual Refinery Capacity Report.

  • U.S. commercial crude oil inventories have decreased in June

    For the week ending June 19, 2026, U.S. refineries processed 17.1 million barrels per day (b/d) of crude oil, down 81,000 b/d from the previous week, and they operated at 96.1% capacity utilization. Gasoline production averaged 9.5 million b/d, and distillate production increased to 5.2 million b/d.

  • UAE's exit from OPEC+ reduced the group's share of crude oil production and capacity

    On April 28, 2026, the United Arab Emirates (UAE) announced that it was leaving OPEC, effective on May 1. OPEC was formed in 1960 by Iraq, Iran, Kuwait, Saudi Arabia, and Venezuela, with the stated objective to "coordinate and unify petroleum policies among Member Countries." OPEC is best known for its effect on global crude oil prices.

  • U.S. natural gas storage capacity increased slightly in 2025

    Underground working natural gas storage capacity in the Lower 48 states increased slightly in 2025, according to our latest data, with growth concentrated in the South Central and Mountain regions. Underground natural gas storage provides a source of energy when demand increases, balancing U.S. energy needs. We calculate natural gas storage capacity in two ways: demonstrated...

  • GE Vernova powers Africa’s industrialisation with integrated energy solutions

    CAPE TOWN, South Africa (June 17, 2026) – In line with the Africa Energy Forum’s theme, ‘Building Africa’s industrialized Future,’ GE Vernova Inc. (NYSE: GEV) today showcased its comprehensive portfolio of technologies engineered to translate large-scale infrastructure ambitions into operational

  • GE Vernova to deliver pumped-storage technology for India’s 1.35 GW Upper Sileru hydropower plant

    VADODARA, INDIA&nbsp;(May 4, 2026) –&nbsp;GE Vernova Inc.&nbsp;(NYSE: GEV) announced today that it has secured an order from Megha Engineering &amp; Infrastructures Limited (MEIL) to deliver nine 150 MW pumped-storage units for the 1.35 GW Upper Sileru hydropower plant, located in the state of

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