Papers
Live trends in quantum computing research, updated daily from arXiv.
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Helical Dirac Current with Local Coupling to a Chiral Potential
Ju Gao, Fang Shen·Jun 16, 2026
We show that exact Dirac eigenstates in cylindrical confinement carry a definite helical conserved-current texture even in the zero orbital angular momentum channel l = 0. For the lowest confined mode, the Dirac current contains a nonvanishing azimut...
Asymptotically Optimal Circuit Depth for Diagonal Unitary Synthesis and Compilation on Two-Dimensional Grids
Chengzhuo Xu, Xiao Chen, Zhihao Liu +1 more·Jun 16, 2026
Diagonal unitaries are a fundamental but resource-intensive class of quantum operations, arising as the phase separators of QAOA and the time-evolution blocks of Hamiltonian simulation. Under all-to-all connectivity their optimal depth is established...
On the entanglement induced by the deformation of phase-space
Shilpa Nandi, Shatarupa Maity, Pinaki Patra·Jun 16, 2026
Most quantum gravity theories propose that the fundamental concept of space-time is mostly compatible with quantum theory in noncommutative (NC) space. In the present paper, we revisit the notion of entanglement induced by NC deformations of phase sp...
An AI Security Agent for Banking: Multi-Vector Fraud and AML Detection Across Retail and Corporate Accounts
Joseph Walusimbi, Joshua Benjamin Ssentongo·Jun 16, 2026
Banks face two threat families with fundamentally different detection requirements: signature-based fraud (card-not-present attacks, account takeover, ATM cloning) and behavioural financial crime (structuring, layering, mule networks, business email ...
Kinematic properties of the Pauli equation
E. E. Perepelkin, B. I. Sadovnikov, N. G. Inozemtseva +1 more·Jun 16, 2026
Based on the Wigner-Vlasov formalism, this paper investigates the kinematic properties of the Pauli equation. It is shown that the probability current associated with the Pauli equation can be represented as a superposition of two currents with certa...
Vorticity Induced by Non-frontal Collisions of Quantum Droplets
J. E. Alba-Arroyo, Santiago F. Caballero-Benitez, Rocio Jáuregui·Jun 16, 2026
The rotational dynamics induced by the non-frontal binary collisions of quantum droplets composed of ultracold alkali atoms are analyzed. A theoretical study is presented within the extended Gross-Pitaevskii equation framework, using experimentally f...
Impact of Network Constraints on Fault-Tolerant Distributed Quantum Computing
Eneet Kaur, Shahrooz Pouryousef, Nitish Kumar Chandra +4 more·Jun 16, 2026
As we move towards scalable and modular quantum computing, quantum data centres become imperative. Existing analyses typically treat network constraints in isolation or through simplified models, leaving the interplay between error correction operati...
RATIO: Redundancy-Controlled Stochastic Routing for Reliable Vehicular Multi-Hop Networking
Lei Lei, Xudong Wang·Jun 16, 2026
Reliable, low-latency multi-hop data delivery in vehicular networks is increasingly demanded, yet remains challenging due to frequent route failures caused by high mobility and intermittent blockage. While redundancy-based routing enhances robustness...
Broadband High-Level Squeezed Light using Waveguide Optical Parametric Amplifiers with External Dispersion Compensation
Takumi Suzuki, Shotaro Oki, Kazuki Hirota +8 more·Jun 16, 2026
We demonstrate broadband phase-sensitive amplification (PSA) measurement of squeezed light generated by a waveguide optical parametric amplifier (OPA) with external dispersion compensation. In broadband systems, group velocity dispersion (GVD) induce...
Acceleration-induced spectral blind spots in stimulated atomic transitions
Jiawei Hu, Hongwei Yu·Jun 16, 2026
Stimulated transitions are among the most fundamental processes in light-matter interaction, underlying resonant absorption and emission in atomic systems. Here we show that uniform acceleration can convert this familiar response into a frequency-sel...
Time-spectral control of accidental coincidences in daylight entanglement-based free-space QKD
Jiyoung Moon, Yonggi Jo, Zaeill Kim +2 more·Jun 15, 2026
Daylight entanglement-based free-space quantum key distribution (QKD) is limited by accidental coincidences from receiver-admitted background light. We develop and experimentally validate a receiver-level framework linking receiver bandwidth, accepte...
Canonical regularization of the stationary Coulomb problem and an Aufbau-like spectral ordering
Anand Aruna Kumar·Jun 15, 2026
The stationary hydrogen atom has Coulomb degeneracy across orbital levels, whereas the Aufbau/Madelung ordering is an empirical, many-electron rule established in atomic physics. We examine the hydrogen atom through a regularized de Broglie--Bohm rep...
Pulse-optimised circuit elements for scalable and noise-resilient quantum chemistry
Henrik Gothen, Christopher K. Long, Djamila Hiller +4 more·Jun 15, 2026
Useful chemistry calculations on near-term quantum processors are hindered by current algorithmic runtimes. We develop a methodology to significantly reduce these runtimes. Typically, variational quantum eigensolver (VQE) algorithms are implemented a...
Effects of Josephson Junction Non-idealities on Adiabatic Quantum Flux Parametron Circuits
Daryoush Shiri, Likai Yang, Mohamed A. Hassan +2 more·Jun 15, 2026
Adiabatic quantum flux parametron (AQFP) gate is a promising approach to scale up the cryogenic microwave electronics for superconducting qubit multiplexed control. However, the performance of these circuits depends on the quality of the Josephson ju...
Robust Spin Splitting and Strain-Controlled Optical Response in Monolayer CrC2N4 for Valleytronic and Optoelectronic Applications
Md. Samrat, Vivek Chowdhury, Sake Wang +1 more·Jun 15, 2026
Monolayer CrC2N4 recently emerged as a promising two-dimensional semiconductor, yet its spin-orbit-coupled (SOC) physics and strain-tunable optical response remained largely unexplored. Here, we investigated the electronic, valley, charge-transfer, a...
Energy-efficient codon optimization on thermodynamic hardware
Andraz Jelincic, Ross C. Walker·Jun 15, 2026
The growing energy demand for computation is becoming increasingly unsustainable. Thermodynamic computing, which harnesses physical thermal fluctuations as a computational resource rather than suppressing them, offers orders-of-magnitude energy savin...
Induced Resource Theories and Harvesting via Quantum Probes
Ron Nyström, Simone Cepollaro, Nicola Pranzini +3 more·Jun 15, 2026
We consider scenarios in which a quantum system with a well-defined resource theory is used as a probe to interact with an environment, such as a quantum field, for which a resource-theoretic description is absent or incomplete. We clarify if and how...
Breaking the bicycle frame: Coset-based quantum LDPC codes
Arda Aydin, Itzhak Tamo, Alexander Barg·Jun 15, 2026
Generalizing the construction of two-block group algebra (2BGA) codes, we introduce a family of two-block quantum LDPC codes constructed using the action of a group on the cosets of its subgroup. This replaces the regular group actions of the earlier...
Coupled-Mode Equations with Arbitrary Mode Combinations for Kinetic-Inductance Superconducting Traveling-Wave Parametric Devices: Theory and Experimental Validation
F. Patricio Mena, Camilo Espinoza, Ryan O. Berriel +2 more·Jun 15, 2026
The coupled-mode equations (CMEs) have proven very successful in describing parametric processes in nonlinear optics. More recently, the same formulation has been used to model microwave superconducting parametric amplifiers and frequency multipliers...
Post-Selection Probability and Fidelity of Bidirectional Teleportation
Ning Sun, Lei Feng, Pengfei Zhang·Jun 15, 2026
Understanding the scrambling of quantum information is central to many areas of quantum physics, including quantum thermalization, entanglement growth, and quantum information processing. Insights from these studies have, in turn, inspired the develo...