Improved Quantum Codes with Transversal T GatesIn this work, we study quantum CSS codes with transversal T gates. Here, T gate transversality is meant in the strongest sense; the application of physical T to every physical qubit yields…Adam Wills·Aug 25, 2026SaveLearn
A Clarifying Note on the Position-Momentum Correspondence: Pontryagin Duality, Fourier Transport, and Physical NormalizationThe position--momentum correspondence combines several mathematically distinct identifications that are often conflated. For the additive group ( R,+), every continuous character has the…Samuel B. Soltau·Aug 25, 2026SaveLearn
QML for Quantum Sensing under Measurement-Induced Information LossNitrogen-vacancy (NV) centers in diamond can serve as highly sensitive solid-state quantum sensors for high-sensitivity magnetometry. However, in the noisy intermediate-scale quantum (NISQ) era,…Sounak Bhowmik, Himanshu Thapliyal·Aug 25, 2026SaveLearn
Quantum Algorithms and Hardness for Point-Count Approximation over Finite FieldsWe study the approximation of the number of solutions of Laurent polynomials over finite fields. For a Laurent polynomial \[f(x)=Σj=1sajxuj∈…Yota Maeda, Hiroshi Yano·Aug 25, 2026SaveLearn
Exact Quasiprobability Hierarchy of the Double-Morse Oscillator: From Potential Geometry to Operator OrderingPhase-space and quasiprobability methods now play operational roles in quantum technologies, characterizing localization, non-Gaussianity, nonclassical resources, and coarse-graining. We develop an…Firoz Chogle, Berihu Teklu, Mauro F. Pereira·Aug 25, 2026SaveLearn
AlchemQ: Proof-Carrying Quantum Circuit Optimization with Per-Result Equivalence CertificatesWe present AlchemQ v0.5, a proof-of-concept system that couples an untrusted beam-search optimizer with a machine-checkable per-result certification layer and a versioned certificate protocol…Adam Laabs·Aug 24, 2026SaveLearn
CircLS: Compiling Lattice Surgery to Physical Circuits with Dynamic AllocationIn fault-tolerant quantum computing, lattice surgery (LS) is one of the leading ways to realize logical operations, and the Pauli product measurement (PPM) is the basic instruction of LS-based…John Yuehan Zhang·Aug 24, 2026SaveLearn
Sustained macroscopic quantum coherence in a superradiant solid under ambient conditionsMacroscopic quantum coherence, such as in laser, Bose-Einstein condensates, superfluids, and superconductors, is important to fundamental physics and useful for quantum technologies. Superradiance…Wei-Jiang Wu, Da-Wu Xiao, Wen-Tao Wang et al.·Aug 24, 2026SaveLearn
Hamiltonian Learning at ScaleLearning a quantum system's Hamiltonian is crucial for understanding and controlling its dynamics and has recently become a topic of widespread interest. To understand the learning protocol's…Nathan Johnson, Eugene Dumitrescu·Aug 24, 2026SaveLearn
Compositionality in quantum reference frame perspectivesUnderstanding a composite system through its constituents is a fundamental practice in physics. In the context of quantum reference frames (QRFs), however, combining the usual quantum-theoretic…Bruna Sahdo, Esteban Castro-Ruiz·Aug 24, 2026SaveLearn
Bang-bang protocol for nondispersive qubit readoutFast, precise, and quantum-non-demolition (QND) readout of superconducting qubits is a fundamental component of high-fidelity quantum sensing and computation. Conventional approaches typically…Nina del Ser, Yinan Chen, Jacob Steiner et al.·Aug 24, 2026SaveLearn
Single-shot online sequence classification with unbounded quantum memory advantageAn agent monitors a complex environment, receiving one observation at each time step and eventually deciding how to label the resulting sequence. Does the sequence indicate an anomaly, and if so, of…Keith K. Ng, Haochen Jay Li, Mile Gu et al.·Aug 24, 2026SaveLearn
Dissipation-induced Sachdev-Ye-Kitaev physics in many-body cavity quantum electrodynamicsWe show that cavity quantum electrodynamics (QED) devices can realize dissipative Sachdev-Ye-Kitaev (SYK) physics, a paradigmatic setting for quantum chaos in open many-body systems. Ultracold…Pietro Pacchioni, Filippo Ferrari, Vincenzo Savona et al.·Aug 24, 2026SaveLearn
Satisfying Quantum Codes: Physics-Informed and Hardware-Aware Code Design with SAT SolversAlthough quantum error correction is widely believed to be necessary for impactful applications of quantum computers, the design of quantum error correction codes is largely done by hand, without…Ben DalFavero, William M. Watkins, Margarite L. LaBorde et al.·Aug 24, 2026SaveLearn
Quantum-enhanced sensing in a driven-dissipative system via chiral waveguideQuantum sensors can achieve precision unattainable by classical sensors. However, dissipation coming from interaction with the environment can greatly degrade the performance of quantum sensors.…Yan Xi Foo, Saubhik Sarkar, Leong Chuan Kwek et al.·Aug 24, 2026SaveLearn
Quantifying the dimensionality of multiparticle entanglement via partition rankThe usefulness of entanglement as a resource in quantum technologies increases for larger systems, that is, if more particles or higher-dimensional quantum systems are considered. Yet, the interplay…Sophia Denker, Ismaël Septembre, Robin Krebs et al.·Aug 24, 2026SaveLearn
Exact Fock-State Preparation with n1/4 Circuit DepthEfficient, deterministic, and high-fidelity preparation of large Fock states is essential for scaling bosonic quantum technologies and exploring quantum phenomena at large excitation energies. We…Tanay Roy·Aug 24, 2026SaveLearn
Dual-Isotope Sympathetic Cooling in a Long Ion ChainOwing to their high controllability and connectivity, one-dimensional ion chains are attractive building blocks for near-term quantum computers. However, long ion chains are susceptible to motional…Tianyi Wang, Marko Cetina·Aug 24, 2026SaveLearn
Quantum-Geometric Length Scale for Long-distance Squeezing in Bosonic Bogoliubov SystemsMultimode squeezing is a key resource for continuous-variable quantum technologies, but its spatial range in bosonic lattices is usually tied to dispersive propagation. Here we show that parametric…Sonu Verma, Sangmo Cheon, Myung-Joong Hwang et al.·Aug 24, 2026SaveLearn
Entanglement-enhanced fluctuation-free daemonic ergotropy with random measurementsOptimized daemonic ergotropy can make entanglement thermodynamically dispensable in measurement-assisted work extraction: for a fixed system marginal, quantum-classical states can reproduce the…Saptarshi Roy, Pritam Halder, Tamal Guha et al.·Aug 24, 2026SaveLearn
Efficient Computation of QKD Key Rates without Semidefinite ProgrammingTranslating observed data into a reliable estimate of the secure key rate is a crucial step for operating a quantum key distribution device. We provide a computational method for this task that only…Bence Temesi, Antoine Gansel, Gereon Koßmann et al.·Aug 24, 2026SaveLearn
Non-Hermitian Generalization of Bloch Sphere in Spacetime AlgebraWe establish a geometric generalization of the Bloch sphere for two-level quantum systems with non-Hermitian Hamiltonians using the Spacetime Algebra (STA) formulation. By lifting the state density…Chih-Wei Wang·Aug 24, 2026SaveLearn
Quantum Monte Carlo in the Age of Many-Body Quantum InformationQuantum Monte Carlo (QMC) methods are among the central numerical tools for studying strongly correlated quantum many-body systems, particularly in higher dimensions. As quantum information has…Yi-Ming Ding, Bin-Bin Mao, Zheng Yan·Aug 24, 2026SaveLearn
Quantum observables as Fréchet sensitivity kernelsWe present a variational--adjoint interpretation of quantum mechanics in which the interaction between forward and adjoint wavefunctions defines a general sensitivity kernel of the system. This…Rafael Abreu·Aug 24, 2026SaveLearn
Taming Spacetime Overhead and Design Complexity in Distributed Fault-Tolerant Superconducting Quantum ComputationScaling fault-tolerant superconducting quantum computers will likely require distributed architectures built from multiple manufacturable quantum processing units. A central question is whether noisy…Qinjing Yu, Ke Liu·Aug 24, 2026SaveLearn