Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Spectrum measurement of quantum channels and application to Hamiltonian parameter estimation
Yuan-De Jin, Wen-Long Ma·Sep 14, 2025
Quantum channels describe the most general dynamics of open quantum systems. A quantum channel, as a linear map on vectorized quantum states, can be represented by a single matrix, whose spectrum is called the channel spectrum. Here we propose a gene...
Beam-splitter-free, high-rate quantum key distribution inspired by intrinsic quantum mechanical spatial randomness of entangled photons
Ayan Kumar Nai, Gopal Prasad Sahu, Rutuj Gharate +2 more·Sep 12, 2025
Quantum key distribution (QKD) using entangled photon sources (EPS) is a cornerstone of secure communication. Despite rapid advances in QKD, conventional protocols still employ beam splitters (BSs) for passive random basis selection. However, BSs int...
Loss Behavior in Supervised Learning With Entangled States
Alexander Mandl, Johanna Barzen, Marvin Bechtold +2 more·Sep 12, 2025
Quantum machine learning (QML) aims to leverage the principles of quantum mechanics to speed up the process of solving machine learning problems or improve the quality of solutions. In supervised learning, training samples that are entangled with a...
Toward Minimum Graphic Parity Networks
Yixin Cao, Yiren Lu, Junhong Nie +2 more·Sep 12, 2025
Quantum circuits composed of CNOT and $R_z$ are fundamental building blocks of many quantum algorithms, so optimizing the synthesis of such quantum circuits is crucial. We address this problem from a theoretical perspective by studying the graphic pa...
Comparing quantum incompatibility of device sets from an operational perspective
Kensei Torii, Ryo Takakura, Ryotaro Imamura·Sep 10, 2025
To effectively utilize quantum incompatibility as a resource in quantum information processing, it is crucial to evaluate how incompatible a set of devices is. In this study, we propose an ordering to compare incompatibility and reveal its various pr...
Machine learning the effects of many quantum measurements
W. Hou, Samuel J. Garratt, N. Eassa +4 more·Sep 10, 2025
Measurements are essential for the processing and protection of information in quantum computers. They can also induce long-range entanglement between unmeasured qubits. However, when post-measurement states depend on many non-deterministic measureme...
Steady state diagram of interacting fermionic atoms coupled to dissipative cavities
Luisa Tolle, Ameneh Sheikhan, Thierry Giamarchi +2 more·Sep 9, 2025
We investigate fermionic atoms subjected to an optical lattice and coupled to a high finesse optical cavity with photon losses. A transverse pump beam introduces a coupling between the atoms and the cavity field. We explore the steady state phase dia...
Toward Axion Signal Extraction in Semiconductor Spin Qubits Via Spectral Engineering
Xiangjun Tan, Zhanning Wang·Sep 8, 2025
Recent advances in quantum sensing and computational technologies indicate the possibility of improving the precision of measurements aimed at detecting cosmological particles and weakly interacting massive particles using various qubit platforms. Wh...
Quantum Advantage via Solving Multivariate Polynomials
Pierre Briaud, Itai Dinur, Riddhi Ghosal +3 more·Sep 8, 2025
In this work, we propose a new way to (non-interactively, verifiably) demonstrate quantum advantage by solving the average-case $\mathsf{NP}$ search problem of finding a solution to a system of (underdetermined) constant degree multivariate equations...
Tunneling of bosonic qubits under local dephasing through microscopic approach
Alberto Ferrara, Farzam Nosrati, Andrea Smirne +2 more·Sep 6, 2025
We present a microscopic derivation of a master equation for two-component bosons (bosonic qubits) which tunnel between spatially separated modes under local dephasing noise. Starting from the full system-bath Hamiltonian with Lorentzian coupling dis...
A Framework for Quantum Data Center Emulation Using Digital Quantum Computers
Seyed Navid Elyasi, Seyed Morteza Ahmadian, Paolo Monti +2 more·Sep 4, 2025
As quantum computing hardware advances, the limitations of single-chip architectures, particularly in terms of small qubit count, have sparked growing interest in modular quantum computing systems and Quantum Data Centers (QDCs). These architectures ...
Geodesics of Quantum Feature Maps on the Space of Quantum Operators
Andrew Vlasic·Sep 2, 2025
Recent advancements in the discipline of quantum algorithms have displayed the importance of the geometry of quantum operators. Given this thrust, this paper develops a rigorous geometric framework to analyze how the Riemannian structure of data, und...
Electron transfer between surface-acoustic-wave-induced moving and static quantum dots
M. Olano, G. Giedke·Sep 1, 2025
Fast long-range interactions between distant quantum dots in arrays remains an unsolved issue, which can be key to solve scalability issues in quantum simulation and computation processes, particularly related to the overhead associated with quantum ...
Classical Simulations of Low Magic Quantum Dynamics
Kemal Aziz, Haining Pan, M. Gullans +1 more·Aug 27, 2025
We develop classical simulation algorithms for adaptive quantum circuits that produce states with low levels of ``magic''(i.e., non-stabilizerness). These algorithms are particularly well-suited to circuits with high rates of Pauli measurements, such...
First-Quantized Quantum Simulation of Non-Relativistic QED with Emergent Topologically Protected Coulomb Interactions
Torin F. Stetina, Nathan Wiebe·Aug 26, 2025
We provide a simulation algorithm that properly addresses light matter interaction between non-relativistic first-quantized charged particles and quantum electromagnetic fields. Unlike previous work, our Hamiltonian does not include an explicit Coulo...
Entanglement dynamics of monitored noninteracting fermions on graphics processing units
Bo Fan, Can Yin, Antonio M. García-García·Aug 25, 2025
The description of the entanglement dynamics of monitored noninteracting fermions, including the existence of measurement-induced phase transitions (MIPTs), is a challenging problem with conflicting results in the literature. The mapping of the probl...
Decoherent histories with(out) objectivity in a (broken) apparatus
Benoît Ferté, Davide Farci, Xiangyu Cao·Aug 22, 2025
We characterize monitored quantum dynamics in a solvable model exhibiting a phase transition between a measurement apparatus and a scrambler. We show that approximate decoherent histories emerge in both phases with respect to a coarse-grained extensi...
Dissipation-driven topological phase transitions in open quantum systems independent of system Hamiltonian
Tian-Shu Deng, Fan Yang·Aug 22, 2025
We investigate dissipation-driven topological phase transitions in one-dimensional quantum open systems governed by the Lindblad equation with linear dissipation operators, which ensure the density matrix retains its Gaussian form throughout the dyna...
Learning measurement-induced phase transitions using attention
Hyejin Kim, Abhishek Kumar, Yiqing Zhou +3 more·Aug 21, 2025
Measurement-induced phase transitions (MIPTs) epitomize new intellectual pursuits inspired by the advent of quantum hardware and the emergence of discrete and programmable circuit dynamics. Nevertheless, experimentally observing this transition is ch...
Universality in the Anticoncentration of Noisy Quantum Circuits at Finite Depths
Arman Sauliere, Guglielmo Lami, Corentin Boyer +2 more·Aug 20, 2025
We present universal properties of anticoncentration in weakly noisy quantum circuits at finite depth. We develop a generic framework for single- and multi-qubit noise channels in the weak-noise limit and introduce an effective description in terms o...