Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Active quantum matter from monitored pure-state dynamics
Jacob F. Steiner, Felix von Oppen, Reinhold Egger·Mar 13, 2026
Quantum many-body systems coupled to out-of-equilibrium reservoirs can behave as active matter and exhibit signs of flocking. However, the resulting steady states are highly mixed and carry only weak quantum signatures. We show that signatures of act...
Critical behaviors of magic and participation entropy at measurement induced phase transitions
Eliot Heinrich, Hanchen Liu, Tianci Zhou +1 more·Mar 13, 2026
We study the participation and stabilizer entropy of non-unitary quantum circuit dynamics, focusing on the critical line that separates the low-entanglement spin-glass phase and the paramagnetic phase. Along this critical line, the entanglement has a...
Adversarial Stress Tests for Quantum Certification
Veronica Sanz, Augusto Smerzi·Mar 13, 2026
We develop a practical framework for semi-device-independent (SDI) certification under operational deviations from the ideal protocol model. Apparent violations of classical benchmarks need not signal genuinely non-classical behaviour; they can arise...
Elucidating magnetic structure with optical dopants: erbium-doped Gd$_2$SiO$_5$
Luke S. Trainor, Masaya Hiraishi, J. -R. Soh +1 more·Mar 13, 2026
The narrowness of the optical transitions of rare-earth-ion dopants makes them highly sensitive probes of their environment. We measured the optical transitions Er$^{3+}$ dopants to determine the previously unknown magnetic ordering of Gd$_{2}$SiO$_{...
Evaluating the Impact of Urban Road Topology on Quantum Approximate Optimization: A Comparative Study of Planned and Organic Networks in Islamabad and Karachi(Pakistan)
Shumaila Ashfaq, Abdul Sami Rao, Roha Ghazanfar Khan·Mar 13, 2026
The performance of shallow-depth quantum optimization algorithms is known to depend strongly on problem structure, yet the role of real-world network topology remains poorly understood. In this work, we study how urban graph structure influences the ...
Pointwise mutual information bounded by stochastic Fisher information
Pedro B. Melo·Mar 13, 2026
We derive general upper bounds to pointwise mutual information in terms of stochastic Fisher information and show these bounds average to known results in the literature for bounds to mutual information in terms of Fisher information. These results d...
Dynamics of Many-Emitter Ensembles: Probing Cooperative Evolution with Scalable Quantum Circuits
Vincent Iglesias-Cardinale, Shreekanth S. Yuvarajan, Herbert F. Fotso·Mar 13, 2026
Many-particle quantum systems often give rise to exotic behaviors in their nonequilibrium dynamics that are rather challenging to reveal with analytical methods or with classical computation. Here, we consider the case of a system of many quantum emi...
Tighter monogamy and polygamy relations in multiparty quantum systems
Chenxiao Wang, Limin Gao·Mar 13, 2026
The monogamy and polygamy properties of quantum entanglement characterize fundamental constraints on the distribution of entanglement in multipartite quantum systems. In this paper, we investigate tighter monogamy and polygamy relations for multipart...
Entanglement-Assisted Discrimination of Nonlocal Sets of Orthogonal States
Ziying Hou, Huaqi Zhou, Limin Gao·Mar 13, 2026
Entanglement-assisted discrimination of orthogonal quantum states exhibiting quantum nonlocality is a frontier topic in quantum information theory. In this paper, we investigate the role of multipartite entanglement and develop resource-efficient LOC...
Embedded Quantum Machine Learning in Embedded Systems: Feasibility, Hybrid Architectures, and Quantum Co-Processors
Somdip Dey, Syed Muhammad Raza·Mar 13, 2026
Embedded quantum machine learning (EQML) seeks to bring quantum machine learning (QML) capabilities to resource-constrained edge platforms such as IoT nodes, wearables, drones, and cyber-physical controllers. In 2026, EQML is technically feasible onl...
Hybrid Integration of Quantum Dot Single Photon Sources with Lithium Tantalate Photonics for On Chip Routing
Kaili Xiong, Defeng Shan, Xueshi Li +11 more·Mar 13, 2026
A promising pathway towards scalable quantum photonic processors involves the simultaneous integration of deterministic single-photon sources, low-loss photonic circuitry, and fast reconfigurability. Thin-film lithium tantalate on insulator (LTOI) of...
Doppler-induced tunable and shape-preserving frequency conversion of microwave wave packets
Felix Ahrens, Enrico Bogoni, Renato Mezzena +7 more·Mar 12, 2026
In superconducting electronics, the ability to control the frequency of microwave wave packets is crucial for several applications, such as the operation of superconducting quantum processors and the readout of superconducting sensors. We introduce a...
Directionality emergence and localization in a quantum random Lorentz gas
Baptiste Lorent, Jean-Marc Sparenberg, David Gaspard·Mar 12, 2026
The propagation of a spherical wave through a two-dimensional random Lorentz gas composed of small fixed scatterers is studied. Inspired by the Mott problem (how an initially isotropic quantum wave can give rise to a single particle-like track), we i...
When Bob orbits Alice: entanglement harvesting in circular motion
F. Sobrero, M. S. Soares, N. F. Svaiter·Mar 12, 2026
We study radiative processes of two qubits coupled to a massless scalar field prepared in the Minkowski vacuum state. The analyze the effects of vacuum fluctuations in the generation of qubits' entangled states is performed. We assume one of the qubi...
Distributed Quantum Computing via Adaptive Circuit Knitting
K. Grace Johnson, Aniello Esposito, Gaurav Gyawali +5 more·Mar 12, 2026
Distributing quantum workloads over many Quantum Processing Units (QPUs) is a crucial step in scaling up quantum computers toward practical quantum advantage due to the limitations in size of a single QPU. In the absence of high-fidelity quantum inte...
Explicit Block Encodings of Discrete Laplacians with Mixed Boundary Conditions
Alexandre Boutot, Viraj Dsouza·Mar 12, 2026
Discrete Laplacian operators arise ubiquitously in scientific computing and frequently appear in quantum algorithms for tasks such as linear algebra, Hamiltonian simulation, and partial differential equations. Block encoding provides the standard met...
Efficient Quantum Simulation for Nonlinear Stochastic Differential Equations
Xiangyu Li, Ahmet Burak Catli, Ho Kiat Lim +4 more·Mar 12, 2026
Nonlinear stochastic differential equations (NSDEs) are a pillar of mathematical modeling for scientific and engineering applications. Accurate and efficient simulation of large-scale NSDEs is prohibitive on classical computers due to the large numbe...
Theory of the Matchgate Commutant
Piotr Sierant, Xhek Turkeshi, Poetri Sonya Tarabunga·Mar 12, 2026
In quantum information theory and statistical physics, symmetries of multiple copies, or replicas, of a system play a pivotal role. For unitary ensembles, these symmetries are encoded in the replicated commutant: the algebra of operators commuting wi...
Hybrid Analog-Digital Simulation of the Abelian Higgs model
Muhammad Asaduzzaman, Rayleigh W. Parker, Noah Goss +8 more·Mar 12, 2026
To investigate gauge theories with near-term quantum computers warrants exploration of nontraditional quantum simulators to find resource-efficient simulation protocols and ultimately access exotic features of different field theories, including unex...
Absence of Charge Offset Drift in a Transmon Qubit
Adria Rospars, Hector Hutin, Yannick Seis +8 more·Mar 12, 2026
Superconducting quantum circuits are sensitive to their electrostatic environment: uncontrolled charges accumulating on the electrodes of a Josephson junction shift the energy levels of a qubit, perturbing its operation and restricting their design. ...