Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Sparse identification of quantum Hamiltonian dynamics via quantum circuit learning
Yusei Tateyama, Yuzuru Kato·Feb 16, 2026
Sparse identification of nonlinear dynamics (SINDy) is a data-driven framework for estimating classical nonlinear dynamical systems from time-series data. In this approach, system dynamics is represented as a linear combination of a predefined set of...
Fundamental questions on robustness and accuracy for classical and quantum learning algorithms
Nana Liu·Feb 16, 2026
This chapter introduces and investigates some fundamental questions on the relationship between accuracy and robustness in both classical and quantum classification algorithms under noisy and adversarial conditions. We introduce and clarify various d...
Bell-like States in Classical Optics: A Process-Theoretic and Sheaf-Theoretic (Categorical) Clarification
Partha Ghose·Feb 16, 2026
Classical polarization optics is naturally described by a two-dimensional complex Hilbert space (Jones vectors), so the tensor-product kinematics underlying bipartite nonseparability is already available classically. For statistical (stochastic) opti...
A hardware-native time-frequency GKP logical qubit toward fault-tolerant photonic operation
Tai Hyun Yoon·Feb 16, 2026
We realize a hardware-native time--frequency Gottesman--Kitaev--Preskill (GKP) logical qubit encoded in the continuous phase space of single photons, establishing a propagating photonic implementation of bosonic grid encoding. Finite-energy grid stat...
The Multiparameter Frontier: Metrological Hierarchy and Robustness in Dispersive Quantum Interferometry
Lucas Ferreira R. de Moura, Daniel Y. Akamatsu, G. D. de Moraes Neto +1 more·Feb 16, 2026
We present a dispersive quantum thermometry protocol for simultaneous estimation of inverse temperature $β$ and interaction strength $x$ using a nonlinear Mach-Zehnder interferometer coupled to a thermal ancilla. We derive closed-form expressions for...
Anonymous quantum sensing robust against state preparation errors
Hiroto Kasai, Seiichiro Tani, Yasuhiro Tokura +1 more·Feb 16, 2026
Networked quantum sensors have several applications such as the mapping of magnetic fields. When the magnetic fields are biomagnetic ones, i.e., they contain some private information, the information of from who non-zero magnetic fields occur has to ...
Probing atom-surface interactions from tunneling-time measurements via rotation-transport on an atom chip
J-B. Gerent, R. Veyron, V. Mancois +3 more·Feb 15, 2026
We propose a novel method to measure the interaction between an ultracold gas of neutral atoms and a surface. This solution combines an optical dipole trap reflected by the surface, a magnetic trap formed by current carrying wires embedded below the ...
Quantum entanglement enhanced via dark mode control in molecular optomechanics
E. Kongkui Berinyuy, P. Djorwé, A. N. Al-Ahmadi +2 more·Feb 15, 2026
Quantum entanglement is an interesting resource for modern quantum technologies, where generating multiple quantum entanglement is highly required. However, entanglement engineering between multiple modes is strongly suppressed by dark mode effect. H...
TensorCircuit-NG: A Universal, Composable, and Scalable Platform for Quantum Computing and Quantum Simulation
Shi-Xin Zhang, Yu-Qin Chen, Weitang Li +22 more·Feb 15, 2026
We present TensorCircuit-NG, a next-generation quantum software platform designed to bridge the gap between quantum physics, artificial intelligence, and high-performance computing. Moving beyond the scope of traditional circuit simulators, TensorCir...
Bidirectional Quantum Processor Interfacing by a 4-Kelvin Analog Signal Chain for Superconducting Qubit Control and Quantum State Readout
Deepak R, Lokendra Kanawat, Jayadeep K +1 more·Feb 15, 2026
This paper presents a comprehensive cryogenic analog signal processing architecture designed for superconducting qubit control and quantum state readout operating at 4 Kelvin. The proposed system implements a complete bidirectional signal path bridgi...
High-fidelity non-adiabatic dark state gates for neutral atoms
Nader Mostaan, Kapil Goswami, Peter Schmelcher +1 more·Feb 14, 2026
Rydberg blockade gates are the most experimentally mature entangling operations in neutral-atom quantum processors, combining fast gate times with simple control, but their performance degrades at larger interatomic separations and remains sensitive ...
Strong-Field Quantum Metrology Beyond the Standard Quantum Limit
Tsendsuren Khurelbaatar, R. T. Sang, Igor Litvinyuk·Feb 14, 2026
Bridging quantum optics and strong-field physics provides a pathway to explore how quantum light shapes extreme nonlinear light-matter interactions. However, direct characterization of non-classical light at damage-threshold intensities remains an op...
Protection of Exponential Operation using Stabilizer Codes in the Early Fault Tolerance Era
Dawei Zhong, Todd A. Brun·Feb 13, 2026
Quantum error correction offers a promising path to suppress errors in quantum processors, but the resources required to protect logical operations from noise, especially non-Clifford operations, pose a substantial challenge to achieve practical quan...
Single snapshot non-Markovianity of Pauli channels
Alireza Seif, Moein Malekakhlagh, Swarnadeep Majumder +1 more·Feb 13, 2026
Pauli channels are widely used to describe errors in quantum computers, particularly when noise is shaped via Pauli twirling. A common assumption is that such channels admit a Markovian generator, namely a Pauli-Lindblad model with non-negative rates...
Compressed Sensing Shadow Tomography
Joseph Barreto, Daniel Lidar·Feb 13, 2026
Estimating many local expectation values over time is a central measurement bottleneck in quantum simulation and device characterization. We study the task of reconstructing the Pauli-signal matrix $S_{ij}=\text{Tr}(O_i ρ(t_j))$ for a collection of $...
Sequential BP-based Decoding of QLDPC Codes
Mohsen Moradi, Salman Habib, V. Nourozi +1 more·Feb 13, 2026
Quantum low-density parity-check (QLDPC) codes are a leading approach to quantum error correction, yet conventional belief propagation (BP) decoders often perform poorly, primarily due to non-convergence exacerbated by stabilizer constraints, which i...
Challenge-Response Quantum Reinforcement Learning with Application to Quantum-Assisted Authentication
Jawaher Kaldari, Saif Al-Kuwari·Feb 12, 2026
Quantum reinforcement learning (QRL) has emerged as a promising research direction that integrates quantum information processing into reinforcement learning frameworks. While many existing QRL studies apply quantum agents to classical environments, ...
Phase Estimation from Amplitude Collapse in Correlated Matter-Wave Interference
Daniel Derr, Dominik Pfeiffer, Ludwig Lind +2 more·Feb 12, 2026
Operating matter-wave interferometers as quantum detectors for fundamental physics or inertial sensors in real-world applications with unprecedented accuracies relies on noise rejection, often implemented by correlating two sensors. Such sensors can ...
Spin networks of quantum channels
Bartosz Grygielski, Jakub Mielczarek·Feb 12, 2026
Spin networks in Loop Quantum Gravity are traditionally described by unitary holonomies corresponding to noiseless transformations. In this work, we extend this framework to incorporate general quantum channels that model effects of environment, whic...
Hierarchy of saturation conditions for multiparameter quantum metrology bounds
Satoya Imai, Jing Yang, Luca Pezzè·Feb 12, 2026
The quantum Cramér-Rao (QCR) bound sets the ultimate local precision limit for unbiased multiparameter estimation. Yet, unlike in the single-parameter case, its saturability is not generally guaranteed and is often assessed through commutativity-base...