Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Recursive algorithm for constructing antisymmetric fermionic states in first quantization mapping
E. Rule, I. A. Chernyshev, I. Stetcu +2 more·Sep 8, 2025
We devise a deterministic quantum algorithm to produce antisymmetric states of single-particle orbitals in the first quantization mapping. Unlike sorting-based antisymmetrization algorithms, which require ordered input states and high Clifford-gate o...
Benchmarking Single-Qubit Gates on a Neutral Atom Quantum Processor
Artem Rozanov, Boris Bantysh, Ivan Bobrov +2 more·Sep 8, 2025
We present benchmarking results for single-qubit gates implemented on a neutral atom quantum processor using Direct Randomized Benchmarking (DRB) and Gate Set Tomography (GST). The DRB protocol involves preparing stabilizer states, applying $m$ layer...
Time-frequency Entangled Photon Mediated CCZ Gate
Chenhui Wang, Weilong Wang, Yangyang Fei +4 more·Sep 8, 2025
High-fidelity native multi-qubit operations are crucial to efficient quantum circuit compilation due to their ability of shortening circuit depth and enhence the performance. However, the design and implementation of these gates remain a challenge. H...
Quantum Purification for Amplitude Damping Noise
Kai Wang, Z. Peng·Sep 6, 2025
Noise poses a fundamental challenge to quantum information processing, with amplitude-damping (AD) noise being particularly detrimental. Preserving high-fidelity quantum systems therefore relies critically on effective error correction and purificati...
Mitigating Measurement Crosstalk via Pulse Shaping
Yang Gao, Feiyu Li, Yang Liu +10 more·Sep 5, 2025
Quantum error correction protocols require rapid and repeated qubit measurements. While multiplexed readout in superconducting quantum systems improves efficiency, fast probe pulses introduce spectral broadening, leading to signal leakage into neighb...
Efficient optical configurations for trapped-ion entangling gates
Aditya Milind Kolhatkar, Karan K. Mehta·Sep 5, 2025
High-fidelity and parallel realization in scalable platforms of the two-qubit entangling gates fundamental to universal quantum computing constitutes one of the largest challenges in implementing fault-tolerant quantum computation. Integrated optical...
A Modular, Adaptive, and Scalable Quantum Factoring Algorithm
Alok Shukla, Prakash Vedula·Sep 5, 2025
Shor's algorithm for integer factorization offers an exponential speedup over classical methods but remains impractical on Noisy Intermediate Scale Quantum (NISQ) hardware due to the need for many coherent qubits and very deep circuits. Building on o...
Fast entangling gates on fluxoniums via parametric modulation of plasmon interaction
Peng Zhao, Peng Xu, Zheng-Yuan Xue·Sep 5, 2025
In superconducting quantum processors, exploring diverse control methods could offer essential versatility and redundancy to mitigate challenges such as frequency crowding, spurious couplings, control crosstalk, and fabrication variability, thus lead...
Improving initial-state-dependent quantum circuit optimization by introducing state labels
Toshiaki Kaji, Koji Terashi, Ryu Sawada·Sep 5, 2025
While the capabilities of quantum hardware have significantly advanced in recent years, executing quantum algorithms as quantum circuits at the lowest possible cost remains crucial, regardless of the hardware progress. We are developing a quantum-sta...
High-fidelity two-qubit gates with transmon qubits using bipolar flux pulses and tunable couplers
N. Smirnov, A. Matanin, A. Ivanov +15 more·Sep 5, 2025
High-fidelity two-qubit gates are essential for scalable quantum computing. We present a scheme based on superconducting transmon qubits and a control pulse delivery protocol that enables arbitrary controlled-phase gates modulated solely by an indepe...
Practical Fidelity Limits of Toffoli Gates in Superconducting Quantum Processors
M. AbuGhanem·Sep 5, 2025
High-fidelity multi-qubit gates are a critical resource for near-term quantum computing, as they underpin the execution of both quantum algorithms and fault-tolerant protocols. The Toffoli gate (CCNOT), in particular, plays a central role in quantum ...
Qumode-Based Variational Quantum Eigensolver for Molecular Excited States.
Rishab Dutta, Cameron Cianci, A. Soudackov +5 more·Sep 5, 2025
We introduce the qumode subspace variational quantum eigensolver (QSS-VQE), a hybrid quantum-classical algorithm for computing molecular excited states using the Fock basis of bosonic qumodes in circuit quantum electrodynamics (cQED) devices. This ap...
Transmon-assisted high-fidelity controlled- Z gates for integer fluxonium qubits
J.-H. Wang, H. Xiong, J.-Z. Yang +3 more·Sep 5, 2025
Fluxoniums, as partially-protected superconducting qubits are promising to be employed to build high-performance large-scale quantum processor. The recently proposed ``integer fluxonium"operates at zero external flux bias, with a frequency of approxi...
Cultivating T states on the surface code with only two-qubit gates
Jahan Claes·Sep 5, 2025
High-fidelity T magic states are a key requirement for fault-tolerant quantum computing in 2D. It has generally been assumed that preparing high-fidelity T states requires noisy injection of T states followed by lengthy distillation routines. This as...
Efficient Preparation of Resource States for Hamiltonian Simulation and Universal Quantum Computation
Thierry N. Kaldenbach, Isaac D. Smith, Hendrik Poulsen Nautrup +2 more·Sep 5, 2025
The direct compilation of algorithm-specific graph states in measurement-based quantum computation (MBQC) can lead to resource reductions in terms of circuit depth, entangling gates, and even the number of physical qubits. In this work, we extend pre...
Adiabatic preparation of thermal states and entropy-noise relation on noisy quantum computers
Etienne Granet, Henrik Dreyer·Sep 5, 2025
We consider the problem of preparing thermal equilibrium states at finite temperature on quantum computers. Assuming thermalization, we show that states that are locally at thermal equilibrium can be prepared by evolving adiabatically an initial ther...
Quantum-inspired dynamical models on quantum and classical annealers
Philipp Hanussek, Jakub Pawłowski, Zakaria Mzaouali +1 more·Sep 4, 2025
We propose a practical, physics-inspired benchmarking suite to challenge both quantum and classical computers by mapping real-time quantum dynamics to a common optimization format. Using a parallel-in-time encoding, we convert the real-time propagato...
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 ...
A Deficiency-Based Approach for the Operational Interpretation of Quantum Resources with Applications
Sunho Kim, Chunhe Xiong, Junde Wu·Sep 3, 2025
A fundamental challenge in quantum resource theory is to establish operational interpretations by quantifying the advantage that quantum resources provide in specific tasks. Conventional resource theories, however, have inherent limitations in charac...
The Structure and Interpretation of Quantum Programs I: Foundations
D. Wakeham·Sep 3, 2025
Qubits are a great way to build a quantum computer, but a limited way to program one. We replace the usual"states and gates"formalism with a"props and ops"(propositions and operators) model in which (a) the C*-algebra of observables supplies the synt...