Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,402
This Month
150
Today
0
Research Volume
13,509 papers in 12 months (-19% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
High-contrast interaction between remote superconducting qubits mediated by multimode cable coupling
Jiajian Zhang, Ji Chu, Jingjing Niu +2 more·May 13, 2025
Superconducting quantum processors offer a promising path toward practical quantum computing. However, building a fault-tolerant quantum computer with millions of superconducting qubits is hindered by wiring density, packaging constraints, and fabric...
Quantum computational speedup and retrocausality
G. Castagnoli·May 13, 2025
Involving only the measurements of commuting observables - the problem-setting and the corresponding solution - quantum algorithms should be subject to classical logic. This would allow flanking their customary quantum description with a classical lo...
Multireference error mitigation for quantum computation of chemistry
Hang Zou, Erika Magnusson, Hampus Brunander +2 more·May 13, 2025
Quantum error mitigation (QEM) strategies are essential for improving the precision and reliability of quantum chemistry algorithms on noisy intermediate-scale quantum devices. Reference-state error mitigation (REM) is a cost-effective chemistry-insp...
Addressing the Current Challenges of Quantum Machine Learning through Multi-Chip Ensembles
J. Park, Jiook Cha, Samuel Yen-Chi Chen +2 more·May 13, 2025
Practical Quantum Machine Learning (QML) is challenged by noise, limited scalability, and poor trainability in Variational Quantum Circuits (VQCs) on current hardware. We propose a multi-chip ensemble VQC framework that systematically overcomes these...
Distributed Quantum Neural Networks on Distributed Photonic Quantum Computing
Kuan-Cheng Chen, Chen-Yu Liu, Y. Shang +2 more·May 13, 2025
We introduce a distributed quantum-classical framework that synergizes photonic quantum neural networks (QNNs) with matrix product state (MPS) mapping to achieve parameter-efficient training of classical neural networks. By leveraging universal linea...
Regularizing quantum loss landscapes by noise injection
Daniil S. Bagaev, Maxim A.Gavreev, A. Mastiukova +2 more·May 13, 2025
The difficulty of training variational quantum algorithms and quantum machine learning models is well established. In particular, quantum loss landscapes are often highly non-convex and dominated by poor local minima. While this renders their trainin...
Differentiable Quantum Architecture Search in Quantum-Enhanced Neural Network Parameter Generation
Samuel Yen-Chi Chen, Chen-Yu Liu, Kuan-Cheng Chen +3 more·May 13, 2025
The rapid advancements in quantum computing (QC) and machine learning (ML) have led to the emergence of quantum machine learning (QML), which integrates the strengths of both fields. Among QML approaches, variational quantum circuits (VQCs), also kno...
Runtime Quantum Advantage with Digital Quantum Optimization
P. Chandarana, Alejandro Gomez Cadavid, Sebastián V. Romero +3 more·May 13, 2025
We demonstrate experimentally that the bias-field digitized counterdiabatic quantum optimization (BF-DCQO) algorithm on IBM's 156-qubit devices can outperform simulated annealing (SA) and CPLEX in time-to-approximate solutions for specific higher-ord...
Scalable Trapped Ion Addressing with Adjoint-optimized Multimode Photonic Circuits
Melika Momenzadeh, Ke Sun, Qiming Wu +4 more·May 13, 2025
Trapped-ion quantum computing requires precise optical control for individual qubit manipulation. However, conventional free-space optics face challenges in alignment stability and scalability as the number of qubits increases. Integrated photonics o...
Performance of rotation-symmetric bosonic codes in the presence of random telegraph noise
Adithi Udupa, Timo Hillmann, R. G. Ahmed +2 more·May 13, 2025
Decoherence in quantum devices, such as qubits and resonators, is often caused by bistable fluctuators modeled as random telegraph noise (RTN), leading to significant dephasing. We analyze the impact of individual and multiple fluctuators on a bosoni...
Recovery dynamics of a gap-engineered transmon after a quasiparticle burst
Heekun Nho, Thomas Connolly, Pavel D. Kurilovich +4 more·May 12, 2025
Ionizing radiation impacts create bursts of quasiparticle density in superconducting qubits. These bursts temporarily degrade qubit coherence which can be detrimental for quantum error correction. Here, we experimentally resolve quasiparticle bursts ...
Physics-Inspired Extrapolation for efficient error mitigation and hardware certification
Pablo Díez-Valle, Gaurav Saxena, Jack S. Baker +2 more·May 12, 2025
Quantum error mitigation (QEM) is essential for the noisy intermediate-scale quantum era, and will remain relevant for early fault-tolerant quantum computers, where logical error rates are still significant. However, most QEM methods incur an exponen...
Quantum Keyless Private Communication under intense background noise
Pedro Neto Mendes, Davide Rusca, Hugo Zbinden +1 more·May 12, 2025
Quantum key distribution relies on quantum mechanics to securely distribute cryptographic keys, offering security but necessitating complex infrastructure and significant resources for practical implementation. Quantum keyless private communication e...
PT symmetry and the square well potential: Antilinear symmetry rather than Hermiticity in scattering processes
Philip D. Mannheim·May 12, 2025
A real potential Hamiltonian has real energy bound states below the scattering threshold and complex energy resonances above it. Scattering states are not square integrable, being instead delta function normalized. This lack of square integrability b...
Mixed state deep thermalization
Xie-Hang Yu, Wen Wei Ho, Pavel Kos·May 12, 2025
We introduce the notion of the mixed state projected ensemble (MSPE), a collection of mixed states describing a local region of a quantum many-body system, conditioned upon measurements of the complementary region which are incomplete. This constitut...
Quantum Process Tomography with Digital Twins of Error Matrices
Tangyou Huang, Akshay Gaikwad, Ilya Moskalenko +19 more·May 12, 2025
Accurate and robust quantum process tomography (QPT) is crucial for verifying quantum gates and diagnosing implementation faults in experiments aimed at building universal quantum computers. However, the reliability of QPT protocols is often compromi...
Multiqubit coherence of mixed states near event horizon
Wen-Mei Li, Jianbo Lu, Shu-Min Wu·May 12, 2025
We investigate the coherence of mixed Greenberger-Horne-Zeilinger (GHZ) and W states for bosonic and fermionic fields when a subset of $n$ ($n<N$) qubits experiences Hawking radiation near a Schwarzschild black hole. Analytical expressions are derive...
Fermion Doubling in Quantum Cellular Automata
Dogukan Bakircioglu, Pablo Arnault, Pablo Arrighi·May 12, 2025
A Quantum Cellular Automaton (QCA) is essentially an operator driving the evolution of particles on a lattice, through local unitaries. Because $Δ_t=Δ_x = ε$, QCAs constitute a privileged framework to cast the digital quantum simulation of relativist...
A Black-box Testing Framework for Oracle Quantum Programs
Peixun Long, Jianjun Zhao·May 12, 2025
Oracle quantum programs are a fundamental class of quantum programs that serve as a critical bridge between quantum computing and classical computing. Many important quantum algorithms are built upon oracle quantum programs, making it essential to en...
Spin-Boson Mapping of the Quantum Approximate Optimization Algorithm
Sami Boulebnane, Abid Khan, Minzhao Liu +4 more·May 12, 2025
The Quantum Approximate Optimization Algorithm (QAOA) achieves monotonically improving performance with circuit depth $p$, yet the study of the high-depth regime has been obstructed by the exponential in $p$ cost of existing exact evaluation techniqu...