Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Noise-Resilient Spatial Search with Lackadaisical Quantum Walks
Gabriel Mauricio Oswald Vieira, Nelson Maculan, Franklin de Lima Marquezino·Aug 19, 2025
Quantum walks are a powerful framework for the development of quantum algorithms, with lackadaisical quantum walks (LQWs) standing out as an efficient model for spatial search. In this work, we investigate how broken-link decoherence affects the perf...
PennyLane-Lightning MPI: A massively scalable quantum circuit simulator based on distributed computing in CPU clusters
J. Kang, Hoon Ryu·Aug 19, 2025
Quantum circuit simulations play a critical role in bridging the gap between theoretical quantum algorithms and their practical realization on physical quantum hardware, yet they face computational challenges due to the exponential growth of quantum ...
Portfolio Construction using a Sampling-Based Variational Quantum Scheme
Gabriele Agliardi, Dimitris Alevras, Vaibhaw Kumar +5 more·Aug 19, 2025
The efficient and effective construction of portfolios that adhere to real-world constraints is a challenging optimization task in finance. We investigate a concrete representation of the problem with a focus on design proposals of an Exchange Traded...
Quantum algorithms to detect ODMR-active defects for quantum sensing applications
Pablo A. M. Casares, Yanbing Zhou, Utkarsh Azad +6 more·Aug 18, 2025
Spin defects in two-dimensional materials are a promising platform for quantum sensing. Simulating the defect's optical response and optically detected magnetic resonance (ODMR) contrast is key to identifying suitable candidates. However, existing si...
Graybox characterization and calibration with finite-shot estimation on superconducting-qubit experiments
Poramet Pathumsoot, A. Chantasri, Michal Hajduvsek +1 more·Aug 18, 2025
Characterization and calibration of quantum devices are necessary steps to achieve fault-tolerant quantum computing. As quantum devices become more sophisticated, it is increasingly essential to rely not only on physics-based models, but also on pred...
Non-Abelian Statistics for Bosonic Symmetry-Protected Topological Phases
Hong-Yu Wang, Bao-Zong Wang, Jian-Song Hong +1 more·Aug 17, 2025
Symmetry-protected non-Abelian (SPNA) statistics opens new frontiers in quantum statistics and enriches the schemes for topological quantum computing. In this work, we propose a new paradigm of SPNA statistics in one-dimensional correlated bosonic sy...
Trotter Simulation of Vibrational Hamiltonians on a Quantum Computer.
Shreyas Malpathak, Sangeeth Das Kallullathil, Ignacio Loaiza +3 more·Aug 16, 2025
Simulating vibrational dynamics is essential for understanding molecular structure, unlocking useful applications such as vibrational spectroscopy for high-fidelity chemical detection. Quantum algorithms for vibrational dynamics are emerging as a pro...
Preparation of the single-spinon wave function in a quantum computer
D. Fa'ilde, A. G'omez, J. Fern'andez-Rossier·Aug 16, 2025
We consider the preparation of single-spinon wave functions, relevant for one-dimensional $S=1/2$ spin models, in a quantum computer. We adopt the recently proposed ansatz \cite{kulk} for the single-spinon wave function, where a state with $S=1/2$ is...
Random Unitaries in Constant (Quantum) Time
Ben Foxman, Natalie Parham, Francisca Vasconcelos +1 more·Aug 15, 2025
Random unitaries are a central object of study in quantum information, with applications to quantum computation, quantum many-body physics, and quantum cryptography. Recent work has constructed unitary designs and pseudorandom unitaries (PRUs) using ...
Scalable platform for qudit-based quantum computing using polar molecules
Soleh Kh. Muminov, Evgeniy O. Kiktenko, Anastasiia S. Nikolaeva +4 more·Aug 14, 2025
We propose a scalable qudit-based quantum processor using rotational states of polar molecules. Previously, molecular internal states were used to enlarge Hilbert space, whereas our approach uses optical tweezer arrays to achieve scalable architectur...
Efficient Quantum Information-Inspired Ansatz for Variational Quantum Eigensolver Algorithm: Applications to Atomic Systems
A. Kalam, Prasenjit Deb, A. Sakurai +3 more·Aug 14, 2025
We present a quantum information-inspired ansatz for the variational quantum eigensolver (VQE) and demonstrate its efficacy in calculating ground-state energies of atomic systems. Instead of adopting a heuristic approach, we start with an approximate...
Magic tricycles: Efficient magic state generation with finite block-length quantum LDPC codes
Varun Menon, J. P. Bonilla-Ataides, Rohan K. Mehta +3 more·Aug 14, 2025
The preparation of high-fidelity non-Clifford (magic) states is an essential subroutine for universal quantum computation, but imposes substantial space-time overhead. Magic state factories based on high rate and distance quantum low-density parity c...
Parity Cross-Resonance: A Multiqubit Gate
Xuexin Xu, Siyu Wang, Radhika H. Joshi +2 more·Aug 14, 2025
We present a native three-qubit entangling gate that exploits engineered interactions to realize control-control-target and control-target-target operations in a single coherent step. Unlike conventional decompositions into multiple two-qubit gates, ...
Projective Measurements: Topological Quantum Computing with an Arbitrary Number of Qubits
Themba Hodge, Philipp Frey, Stephan Rachel·Aug 13, 2025
Topological quantum computing promises intrinsic fault tolerance by encoding quantum information in non-Abelian anyons, where quantum gates are implemented via braiding. While braiding operations are robust against local perturbations, a critical yet...
An integrated photonics platform for high-speed, ultrahigh-extinction, many-channel quantum control
Meng Zhao, Manuj Singh, Anshuman Singh +10 more·Aug 13, 2025
High-fidelity control of the thousands to millions of programmable qubits needed for utility-scale quantum computers presents a formidable challenge for control systems. In leading atomic systems, control is optical: UV-NIR beams must be fanned out o...
Fault tolerant Operations in Majorana-based Quantum Codes: Gates, Measurements and High Rate Constructions
Maryam Mudassar, Alexander Schuckert, Daniel Gottesman·Aug 13, 2025
Majorana-based quantum computation in nanowires and neutral atoms has gained prominence as a promising platform to encode qubits and protect them against noise. In order to run computations reliably on such devices, a fully fault-tolerant scheme is n...
Quantum circuit simulation with a local time-dependent variational principle
Aaron Sander, Maximilian Frohlich, Mazen Ali +6 more·Aug 13, 2025
Classical simulations of quantum circuits are vital for assessing potential quantum advantage and benchmarking devices, yet they require sophisticated methods to avoid the exponential growth of resources. Tensor network approaches, in particular matr...
Single-gate, multipartite entanglement on a room-temperature quantum register
Joseph D. Minnella, Mathieu Ouellet, Amelia R. Klein +1 more·Aug 11, 2025
Multipartite entanglement is an essential aspect of quantum systems, needed to execute quantum algorithms, implement error correction, and achieve quantum-enhanced sensing. In solid-state quantum registers such nitrogen-vacancy (NV) centers in diamon...
Single-Shot Decoding and Fault-tolerant Gates with Trivariate Tricycle Codes
Abraham Jacob, Campbell McLauchlan, Dan E. Browne·Aug 11, 2025
While quantum low-density parity check (qLDPC) codes are a low-overhead means of quantum information storage, it is valuable for quantum codes to possess fault-tolerant features beyond this resource efficiency. In this work, we introduce trivariate t...
Spin-orbit-enabled realization of arbitrary two-qubit gates on moving spins
D. Fern'andez-Fern'andez, Y. Matsumoto, L. Vandersypen +2 more·Aug 11, 2025
Shuttling spin qubits in systems with large spin-orbit interaction (SOI) can cause errors during motion. However, in this work, we demonstrate that SOI can be harnessed to implement an arbitrary high-fidelity two-qubit (2Q) gate. We consider two spin...