Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Machine Learning on Heterogeneous, Edge, and Quantum Hardware for Particle Physics (ML-HEQUPP)
Julia Gonski, Jennifer Ott, Shiva Abbaszadeh +115 more·Feb 24, 2026
The next generation of particle physics experiments will face a new era of challenges in data acquisition, due to unprecedented data rates and volumes along with extreme environments and operational constraints. Harnessing this data for scientific di...
Revealing Pseudo-Fermionization and Chiral Binding of One-Dimensional Anyons using Adiabatic State Preparation
Brice Bakkali-Hassani, Joyce Kwan, Perrin Segura +5 more·Feb 23, 2026
Fractional statistics give rise to quantum behaviors that differ fundamentally from those of bosons and fermions. While two-dimensional anyons play a major role in strongly correlated systems and topological quantum computing, the nature of their one...
Zero-point energy of a trapped ultracold Fermi gas at unitarity: squeezing the Heisenberg uncertainty principle and suppressing the Pauli principle to produce a superfluid state
D. K. Watson·Feb 23, 2026
The zero-point energy of a trapped ultracold Fermi gas at unitarity is investigated in relation to the combined effects of the Heisenberg uncertainty principle and the Pauli principle. This lowest allowed quantum state is a superfluid state which has...
A quantum mechanical analysis of the coherence de Broglie wavelength for superresolution and enhanced sensitivity in a coupled interferometer scheme
B. S. Ham·Feb 23, 2026
Quantum sensing has drawn considerable attention as a means to overcome the fundamental limitations in classical sensing. In practice, however, quantum sensing has been strongly constrained by the photon loss, the achievable photon number N in N00N s...
Measurement-Guided State Refinement for Shallow Feedback-Based Quantum Optimization Algorithm
Lucas A. M. Rattighieri, Pedro M. Prado, Marcos C. de Oliveira +1 more·Feb 23, 2026
Limited circuit depth remains a central constraint for quantum optimization in the noisy intermediate-scale quantum (NISQ) regime, where shallow unitary dynamics may fail to sufficiently concentrate probability on low-energy configurations. We introd...
Direct Variational Calculation of Two-Electron Reduced Density Matrices via Semidefinite Machine Learning
Luis H. Delgado-Granados, David A. Mazziotti·Feb 23, 2026
We introduce a data-driven framework for approximating the convex set of $N$-representable two-electron reduced density matrices (2-RDMs). Traditional approaches characterize this set through linear matrix inequalities that define its supporting hype...
Exploiting Low-Rank Structure in Max-K-Cut Problems
Ria Stevens, Fangshuo Liao, Barbara Su +2 more·Feb 23, 2026
We approach the Max-3-Cut problem through the lens of maximizing complex-valued quadratic forms and demonstrate that low-rank structure in the objective matrix can be exploited, leading to alternative algorithms to classical semidefinite programming ...
Quantum Machine Learning for Complex Systems
Vinit Singh, Amandeep Singh Bhatia, Mandeep Kaur Saggi +2 more·Feb 23, 2026
Quantum machine learning (QML) is rapidly transitioning from theoretical promise to practical relevance across data-intensive scientific domains. In this Review, we provide a structured overview of recent advances that bridge foundational quantum lea...
A note on the conceptual problems on the Unruh effect
Hideyasu Yamashita·Feb 23, 2026
This brief note is written with a somewhat similar purpose to Earman's 2011 paper on the conceptual problems on the Unruh effect. However, we confine ourselves to Sewell's modular approach to the Unruh effect, which is based on the theorems of Tomita...
No change in Hilbert space fundamentalism
Ovidiu Cristinel Stoica·Feb 23, 2026
Hilbert space fundamentalism (HSF) states that everything about the physical world is encoded in the Hamiltonian operator and the state vector (as a unit vector, not a wavefunction, which requires additional specification of a configuration space, a ...
Equilibrium and dynamical quantum phase transitions in dipolar atomic Josephson junctions
Cesare Vianello, Giovanni Mazzarella, Luca Salasnich·Feb 23, 2026
An atomic Josephson junction realized with dipolar bosons in a double-well potential can be described by an extended Bose-Hubbard model in which dipolar interactions generate an effective on-site interaction and nearest-neighbor pair tunneling. Using...
Quantifying Effective Heterodyne Detection Efficiency with SI-Traceable Standards
Luiz Couto Correa Pinto Filho, Jesper B. Christensen, Anders Brusch +1 more·Feb 23, 2026
Accurate calibration of coherent optical receivers is essential for reliable performance assessment in coherent communications, precision and quantum sensing, and continuous-variable quantum key distribution (CV-QKD), where the effective detection ef...
Entanglement Barriers from Computational Complexity: Matrix-Product-State Approach to Satisfiability
Tim Pokart, Frank Pollmann, Jan Carl Budich·Feb 23, 2026
We approach the 3-SAT satisfiability problem with the quantum-inspired method of imaginary time propagation (ITP) applied to matrix product states (MPS) on a classical computer. This ansatz is fundamentally limited by a quantum entanglement barrier t...
Pulse-level control for quantum resource preparation
K. De La Ossa Doria, T. Merlo Vergara, D. Goyeneche·Feb 23, 2026
Minimizing the time required for quantum state preparation is crucial to mitigate decoherence and enable practical quantum algorithms on near-term hardware. In this work, we introduce a technique for quantum state preparation in transmon-qubit system...
Quantum algorithm for simulating resonant inelastic X-ray scattering in battery materials
Ignacio Loaiza, Alexander Kunitsa, Stepan Fomichev +9 more·Feb 23, 2026
Resonant inelastic X-ray scattering (RIXS) is the workhorse experimental technique for probing the structural degradation of higher-capacity cathode materials. However, the interpretation of experimental spectra is challenging due to the lack of accu...
Time Crystals as Passively Protected Oscillating Qubits
Mert Esencan, A. I. Lvovsky, Berislav Buča·Feb 23, 2026
Protecting information against decoherence in open quantum systems remains a central challenge for quantum computing. In particular, passive error correction schemes have so far been limited to static memories rather than dynamical qubits. We demonst...
Spectral Decimation of Quantum Many-Body Hamiltonians
Feng He, Arthur Hutsalyuk, Giuseppe Mussardo +1 more·Feb 23, 2026
We develop a systematic theory of spectral decimation for quantum many-body Hamiltonians and show that it provides a quantitative probe of emergent symmetries in statistically mixed spectra. Building on an analytical description of statistical mixtur...
Proof of a finite threshold for the union-find decoder
Satoshi Yoshida, Ethan Lake, Hayata Yamasaki·Feb 23, 2026
Fast decoders that achieve strong error suppression are essential for fault-tolerant quantum computation (FTQC) from both practical and theoretical perspectives. The union-find (UF) decoder for the surface code is widely regarded as a promising candi...
Generalized $\mathbb{Z}_p$ toric codes as qudit low-density parity-check codes
Zijian Liang, Yu-An Chen·Feb 23, 2026
We study two-dimensional translation-invariant CSS stabilizer codes over prime-dimensional qudits on the square lattice under twisted boundary conditions, generalizing the Kitaev $\mathbb{Z}_p$ toric code by augmenting each stabilizer with two additi...
Quantum simulation in the Heisenberg picture via vectorization
Shao-Hen Chiew, Armando Angrisani, Zoë Holmes +1 more·Feb 23, 2026
We present a general framework for simulating quantum systems in the Heisenberg picture on quantum hardware. Based on the vectorization map, our framework fully exploits the mapping between operators and quantum states, allowing any task defined on H...