Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Quantum Skip Gates: Coherently Conditioned Subroutines in Iterative Quantum Algorithms
Kym Derriman·May 31, 2025
The Quantum Skip Gate (QSG) is a unitary circuit primitive that coherently superposes the execution and omission of an expensive quantum subroutine based on the outcome of a cheaper preceding subroutine, without mid-circuit measurement or loss of coh...
Exponential speedup in quantum simulation of Kogut-Susskind Hamiltonian via orbifold lattice
Georg Bergner, Masanori Hanada·May 31, 2025
We demonstrate that the orbifold lattice Hamiltonian -- an approach known for its efficiency in simulating SU($N$) Yang-Mills theory and QCD on digital quantum computers -- can reproduce the Kogut-Susskind Hamiltonian in a controlled limit. While the...
Statistical Signal Processing for Quantum Error Mitigation
Kausthubh Chandramouli, K. Allen, Christopher Mori +2 more·May 31, 2025
In the noisy intermediate-scale quantum (NISQ) era, quantum error mitigation (QEM) is essential for producing reliable outputs from quantum circuits. We present a statistical signal processing approach to QEM that estimates the most likely noiseless ...
Realistic quantum network simulation for experimental BBM92 key distribution
Michelle Chalupnik, Brian Doolittle, Suparna Seshadri +8 more·May 30, 2025
Quantum key distribution (QKD) can provide secure key material between two parties without relying on assumptions about the computational power of an eavesdropper. QKD is performed over quantum links and quantum networks, systems which are resource-i...
Spin vs. position conjugation in quantum simulations with atoms: application to quantum chemistry
N. A. Moroz, K. S. Tikhonov, L. V. Gerasimov +4 more·May 30, 2025
The permutation symmetry is a fundamental attribute of the collective wavefunction of indistinguishable particles. It makes a difference for the behavior of collective systems having different quantum statistics but existing in the same environment. ...
Benchmarking Quantum Heuristics: Non-Variational QWOA for Weighted Maxcut
Tavis Bennett, Aidan Smith, Edric Matwiejew +1 more·May 30, 2025
We present benchmarking results for the non-variational Quantum Walk Optimisation Algorithm (non-variational QWOA) applied to the weighted maxcut problem, using classical simulations for problem sizes up to $n = 31$. The amplified quantum state, prep...
Symbolic Hamiltonian Compiler for Hybrid Qubit-Boson Processors
Ethan Decker, Erik Gustafson, Evan McKinney +7 more·May 30, 2025
Quantum simulation of the interactions of fermions and bosons - the fundamental particles of nature - is essential for modeling complex quantum systems in material science, chemistry and high-energy physics and has been proposed as a promising applic...
Mid-circuit measurement as an algorithmic primitive
A. Lemelin, Christophe Pere, O. Landon-Cardinal +1 more·May 30, 2025
We explore the usefulness of mid-circuit measurements to enhance quantum algorithmics. Specifically, we assess how quantum phase estimation (QPE) and mid-circuit measurements can improve the performance of variational quantum algorithms. Our focus is...
Optimal Control by Variational Quantum Algorithms
Tangyou Huang, Jing-jun Zhu, Z.Y. Ni·May 29, 2025
Hybrid quantum-classical algorithms hold great promise for solving quantum control problems on near-term quantum computers. In this work, we employ the hybrid framework that integrates digital quantum simulation with classical optimization to achieve...
Towards Efficient Quantum Thermal State Preparation via Local Driving: Lindbladian Simulation with Provable Guarantees
Dominik Hahn, S. A. Parameswaran, Benedikt Placke·May 28, 2025
Preparing the thermal density matrix $ρ_β \propto e^{-βH}$ corresponding to a given Hamiltonian $H$ is a task of central interest across quantum many-body physics, and is particularly salient when attempting to study it with quantum computers. Althou...
Flow to Nishimori universality in weakly monitored quantum circuits with qubit loss
Malte Pütz, Romain Vasseur, Andreas W. W. Ludwig +2 more·May 28, 2025
In circuit-based quantum state preparation, qubit loss and coherent errors are circuit imperfections that imperil the formation of long-range entanglement beyond a certain threshold. The critical theory at the threshold is a continuous entanglement t...
Numerical Optimization Strategies for the Variational Hamiltonian Ansatz in Noisy Quantum Environments
S. Illésová, V. Novák, T. Bezděk +2 more·May 28, 2025
The prevalence of variational methods in near-term quantum computing makes optimizer choice critical, yet selection is frequently intuition-based. We therefore present a systematic benchmark of eight classical optimization algorithms for variational ...
Timelike Quantum Energy Teleportation in the Nambu-Jona-Lasinio Model
Fidele J. Twagirayezu·May 28, 2025
We propose a novel timelike quantum energy teleportation (QET) protocol within the 1+1 dimensional Nambu-Jona-Lasinio (NJL) model, an interacting fermionic field theory exhibiting spontaneous chiral symmetry breaking. By coupling localized Unruh-DeWi...
Variational Quantum Simulations of a Two-Dimensional Frustrated Transverse-Field Ising Model on a Trapped-Ion Quantum Computer
Ammar Kirmani, Elijah Pelofske, Andreas Bartschi +2 more·May 28, 2025
Quantum computers are an ideal platform to study the ground state properties of strongly correlated systems due to the limitation of classical computing techniques particularly for systems exhibiting quantum phase transitions. While the error rates o...
Quantum simulation of charge and exciton transfer in multi-mode models using engineered reservoirs
Visal So, Midhuna Duraisamy Suganthi, Mingjian Zhu +7 more·May 28, 2025
Quantum simulation enables studies of open-system dynamics in non-perturbative regimes by programming electronic, vibrational, and environmental interactions on comparable energy scales. Trapped ions offer this capability, combining spins, phonons, a...
Optimizing QUBO on a quantum computer by mimicking imaginary time evolution
Yahui Chai, Alice di Tucci·May 28, 2025
We propose a hybrid quantum-classical algorithm for solving QUBO problems using an Imaginary Time Evolution-Mimicking Circuit (ITEMC). The circuit parameters are optimized to closely mimic imaginary time evolution, using only single- and two-qubit ex...
Low crosstalk in a scalable superconducting quantum lattice
Mohammed Alghadeer, Shuxiang Cao, S. Fasciati +5 more·May 28, 2025
Superconducting quantum circuits are a key platform for advancing quantum information processing and simulation. Scaling efforts currently encounter challenges such as Josephson-junction fabrication yield, design frequency targeting, and long-range c...
Towards Quantum Simulation of Meson Scattering in a Z2 Lattice Gauge Theory
Yahui Chai, Yibin Guo, Stefan Kuhn·May 27, 2025
Scattering processes are fundamental for understanding the structure of matter. At the same time, simulating the real-time dynamics of scattering processes on classical computers is challenging. Quantum computing offers a promising avenue for efficie...
Fundamentals of Trapped Ions and Quantum Simulation of Chemical Dynamics
Guido Pagano, Wojciech Adamczyk, Visal So·May 26, 2025
Trapped atomic ions are among the most advanced platforms for quantum simulation, computation, and metrology, offering long coherence times and precise, individual control over both internal and motional degrees of freedom. In this review, we present...
Observation of hadron scattering in a lattice gauge theory on a quantum computer
Julian Schuhmacher, G. Su, Jesse J. Osborne +3 more·May 26, 2025
Scattering experiments are at the heart of high-energy physics (HEP), breaking matter down to its fundamental constituents, probing its formation, and providing deep insight into the inner workings of nature. In the current huge drive to forge quantu...