Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Differential source-basis encoding for superresolved parameter estimation in a time-reversed Young interferometer
Jianming Wen·Mar 28, 2026
We develop a differential source-encoding protocol for local parameter estimation in a time-reversed Young interferometer, where the source plane is used not merely as a scan coordinate but as a programmable measurement basis. Two sequential positive...
Single Artificial Atom SASER
Shtefan V. Sanduleanu, Peter Yu. Shlykov, Alexei N. Bolgar +7 more·Mar 28, 2026
Lasing - an effect of orthodox quantum mechanics - was discovered in 1955 and recognized by the Nobel Prize in 1964 due to its fundamentality. Nowadays, lasers and masers routinely work with electromagnetic waves and consist of a resonator with an ac...
Benchmarking Quantum Computers via Protocols -- Comparing Superconducting and Ion-Trap Quantum Technology
Nitay Mayo, Tal Mor, Yossi Weinstein·Mar 28, 2026
Superconducting and Ion-Trap quantum architectures are common in the current landscape of the quantum computing field, each with distinct characteristics and operational constraints. Understanding and measuring the underlying quantumness of these dev...
Trade-off between coherence and heat in a non-Markovian dephasing dynamics
Marino P. Lenzarini, Diogo O. Soares-Pinto·Mar 28, 2026
How quantum coherence influences thermodynamic behavior remains an open question in quantum thermodynamics. Here we investigate this relation within the pure dephasing framework, where a central qubit interacts with a finite Ising-like spin environme...
Spin--valley--resolved tunneling through magnetic barriers in WSe$_2$
Rachid El Aitouni, Clarence Cortes, David Laroze +1 more·Mar 28, 2026
We investigate the influence of a magnetic field on the electronic properties of WS$e_2$ with a focus on spin-orbit coupling, spin and valley polarization, and conductance. We solve the eigenvalue equation analytically and use the continuity equation...
Non-Unitary Quantum Machine Learning: Fisher Efficiency Transitions from Distributed Quantum Expressivity
Apoorv Kumar Masta, Srinjoy Ganguly, Shalini Devendrababu +3 more·Mar 28, 2026
Quantum machine learning has faced growing scrutiny over its practical advantages compared to classical approaches, particularly following dequantization results and large scale benchmarking studies that have challenged earlier optimistic claims. Thi...
Quantum Conditional Stochastic Processes
Stan Gudder·Mar 28, 2026
Quantum mechanics contains some strange unphysical concepts. Among these are complex numbers, Hilbert spaces with their unitary and self-adjoint operators, states represented by complex vectors, superpositions of states, collapse of wave functions, B...
Quantum Hall States response to toroidal geometry deformation
Bruno Mera, José M. Mourão, João P. Nunes +1 more·Mar 28, 2026
In this paper, we apply techniques of geometric quantization to study the response of the integer and fractional quantum Hall effects to toroidal geometry deformation. The main method is that of using complex time Hamiltonian evolution to induce the ...
Single-photon-boosted type-I fusion gates
A. A. Melkozerov, S. S. Straupe, M. Yu. Saygin·Mar 28, 2026
Fusion measurements are a key primitive for linear-optical quantum computing and quantum networks. Type-I and type-II fusion gates are widely used to combine small entangled resource states into larger photonic states, but without ancillary resources...
Time of arrival on a ring and relativistic quantum clocks
Iason Vakondios, Charis Anastopoulos·Mar 28, 2026
We study the time-of-arrival problem for relativistic particles constrained to move on a ring, formulating the problem entirely within Quantum Field Theory (QFT). In contrast to its counterpart for motion in a line, the circle topology implies that p...
NNQA: Neural-Native Quantum Arithmetic for End-to-End Polynomial Synthesis
Ziqing Guo, Jie Li, Yong Chen +1 more·Mar 28, 2026
Hybrid classical quantum learning is often bottlenecked by communication overhead and approximation error from generic variational ansatzes. In this study, we introduce Neural Native Quantum Arithmetic (NNQA), which compiles classically learned nonli...
Quantum Bit Error Rate Analysis in BB84 Quantum Key Distribution: Measurement, Statistical Estimation, and Eavesdropping Detection
Jaydeep Rath, Prajwal Panth, P. S. N. Bhaskar·Mar 28, 2026
Quantum Key Distribution (QKD) provides information-theoretic security by exploiting the principles of quantum mechanics. Among QKD protocols, the BB84 scheme remains the most widely adopted for both theoretical research and practical implementation....
From Foundation ECG Models to NISQ Learners: Distilling ECGFounder into a VQC Student
Giovanni dos Santos Franco, Felipe Mahlow, Ellison Fernando Cardoso +1 more·Mar 28, 2026
Foundation models have recently improved electrocardiogram (ECG) representation learning, but their deployment can be limited by computational cost and latency constraints. In this work, we fine-tune ECGFounder as a high-capacity teacher for binary E...
Ultralow-power coherent qubit control using AQFP logic at millikelvin temperatures
Hiroto Mukai, Akiyoshi Tomonaga, Rui Wang +5 more·Mar 28, 2026
Qubit controllers are essential for scaling superconducting quantum processors, but implementing them at the 10 mK stage of a dilution refrigerator remains challenging due to stringent cooling constraints. Here we report an ultralow-power qubit contr...
Quantum gravitodiamagnetic interaction
Di Hao, Jiawei Hu, Hongwei Yu·Mar 28, 2026
In the framework of linearized quantum gravity, we investigate the quantum gravitational interaction induced by the gravitodiamagnetic coupling of two massive objects to vacuum fluctuations of the gravitational field. Starting from the Lagrangian of ...
Nonclassical Photon-Bundle Correlations in Quantum Rabi Models
Yong-Xin Zhang, Chen Wang, Qing-Hu Chen·Mar 28, 2026
We investigate nonclassical photon-bundle correlations in the quantum Rabi model and its extended cases, using the quantum dressed master equation. By tuning the light--matter coupling strength at finite temperature, the quantum Rabi model exhibits c...
Quantum-enhanced estimation of signal field amplitudes with critical squeezed states of photonic modes
Ken Chen, Jia-Hao Lv, Wen Ning +2 more·Mar 28, 2026
Critical phenomena of quantum systems offer a promising strategy to improve measurement precision. So far, many criticality-enhanced quantum metrological schemes have been proposed by using the adiabatically evolved photonic states of composite syste...
Pattern Formation in Quantum Hierarchical Cellular Neural Networks
W. A. Zúñiga-Galindo, B. A. Zambrano-Luna, Chayapuntika Indoung·Mar 28, 2026
We present a new class of quantum neural networks (QNNs) whose states are solutions of $p$-adic Schrödinger equations with a non-local potential that controls the interaction between the neurons. These equations are obtained as Wick rotations of the ...
Derivation of the Schrodinger equation from fundamental principles
Wenzhuo Zhang, Anatoly Svidzinsky·Mar 27, 2026
Schrodinger path to the quantum mechanical wave equation was heuristic and guided more by physical intuition than formal deduction. Here we derive the Schrodinger equation for the particle wave function, assuming that it has a meaning of the probabil...
Integrating Julia-ITensors into the Tensor Network Quantum Virtual Machine (TNQVM)
Zachary W. Windom, Daniel Claudino, Vicente Leyton-Ortega·Mar 27, 2026
The Tensor Network Quantum Virtual Machine (TNQVM) is a high-performance classical circuit simulation backend for the eXtreme-scale ACCelerator (XACC) framework that leverages the Intelligent Tensor (ITensor) library for tensor network--based quantum...