Papers
Live trends in quantum computing research, updated daily from arXiv.
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Simulating Lattice Gauge Theories with Virtual Rishons
David Rogerson, João Barata, Robert M. Konik +2 more·Mar 5, 2026
Classical tensor network and hybrid quantum-classical algorithms are promising candidates for the investigation of real-time properties of lattice gauge theories. We develop here a novel framework which enforces gauge symmetry via a quantum-link virt...
Interplay of internal and external coupling phases in cavity magnonics: from level repulsion to attraction
Guillaume Bourcin, Mufti Avicena, Vincent Vlaminck +2 more·Mar 5, 2026
We experimentally validate a unified input--output model that incorporates internal and external coupling phases in a room-temperature cavity magnonic system. By explicitly accounting for phase effects, the model provides full control of interference...
Uniform process tensor approach for the calculation of multi-time correlation functions of non-Markovian open systems
Matteo Garbellini, Konrad Mickiewicz, Valentin Link +2 more·Mar 5, 2026
The process tensor framework to open quantum systems provides the most general description of multi-time correlations in non-Markovian quantum dynamics. A compressed representation of a process tensor in terms of matrix product operators (MPO) can be...
A Dynamical Lie-Algebraic Framework for Hamiltonian Engineering and Quantum Control
Yanying Liang, Ruibin Xu, Mao-Sheng Li +2 more·Mar 5, 2026
Determining the physically accessible unitary dynamics of a quantum system under finite Hamiltonian resources is a central problem in quantum control and Hamiltonian engineering. Dynamical Lie algebras (DLAs) provide the fundamental link between avai...
Macromux: scalable postselection for high-threshold fault-tolerant quantum computation
Patrick Birchall, Jacob Bridgeman, Christopher Dawson +7 more·Mar 5, 2026
We introduce a new resource-efficient scheme for fault-tolerant quantum computation known as `macroscale multiplexing' (or simply `Macromux'), that utilizes scalable postselection to significantly improve the threshold of a given fault-tolerant proto...
Robust composite two-qubit gates for silicon-based spin qubits
Yang-Yang Yu, Guang-Hui Zhang, Yan-Jie He +3 more·Mar 5, 2026
We propose a universal approach based on Hamiltonian inverse engineering to realize a set of parameterized two-qubit gates. This method possesses unique advantages to simultaneous control of transitions among four energy levels, providing a simpler a...
Quantum Algorithms for Network Signal Coordination
Vinayak Dixit, Richard Pech·Mar 5, 2026
There has been increasing interest in developing efficient quantum algorithms for hard classical problems. The Network Signal Coordination (NSC) problem is one such problem known to be NP complete. We implement Grover's search algorithm to solve the ...
Programmable quantum simulation of anharmonic dynamics
Cameron McGarry, Teerawat Chalermpusitarak, Kai Schwennicke +9 more·Mar 5, 2026
Continuous-variable-discrete-variable (CV-DV) quantum simulators offer a natural route to simulating bosonic dynamics relevant to many branches of physics and chemistry. However, programmable simulation of arbitrary dynamics is an outstanding challen...
Necessary conditions for the Markovian Mpemba effect
Ido Avitan, Roee Factor, David Gelbwaser-Klimovsky·Mar 4, 2026
The Mpemba effect is a thermodynamic anomaly in which a system farther away in temperature from equilibrium thermalizes before one that is initially closer. The effect has been experimentally observed across a wide range of systems, including water, ...
Transversal AND in Quantum Codes
Christine Li, Lia Yeh·Mar 4, 2026
The AND gate is not reversible$\unicode{x2014}$on qubits. However, it is reversible on qutrits, making it a building block for efficient simulation of qubit computation using qutrits. We first observe that there are multiple two-qutrit Clifford+T uni...
Examination of classical simulations for Heisenberg-Langevin equations for spin-1/2
Scott D. Linz, Jochen Gemmer·Mar 4, 2026
A system of spins coupled to a bath is a traditional setup in open quantum systems. Through Heisenberg's equation, the spin dynamics can be modeled by a set of first-order differential equations. Interpreting the terms as colored noise and non-Markov...
Towards Predictive Quantum Algorithmic Performance: Modeling Time-Correlated Noise at Scale
Amit Jamadagni, Gregory Quiroz, Eugene Dumitrescu·Mar 4, 2026
Combining tensor network techniques with quantum autoregressive moving average models, we quantify the effects of time-correlated noise on quantum algorithms and predict their performance at scale. As a paradigmatic test case, we examine the quantum ...
HyQBench: A Benchmark Suite for Hybrid CV-DV Quantum Computing
Shubdeep Mohapatra, Yuan Liu, Eddy Z. Zhang +1 more·Mar 4, 2026
Hybrid continuous-variable (CV)-discrete-variable (DV) quantum systems present a promising direction for quantum computing by combining the high dimensional encoding capabilities of qumodes with the control offered by DV qubits on the coupled qumodes...
Quantum error mitigation by hierarchy-informed sampling: chiral dynamics in the Schwinger model
Theo Saporiti, Oleg Kaikov, Vasily Sazonov +1 more·Mar 4, 2026
Quantum simulations on current NISQ hardware are limited by its noisy nature, making efficient quantum error mitigation methods highly demanded. In this paper we introduce a novel mitigation scheme, applicable to arbitrary quantum simulations of time...
Achieving Optimal-Distance Atom-Loss Correction via Pauli Envelope
Pengyu Liu, Shi Jie Samuel Tan, Eric Huang +3 more·Mar 4, 2026
Atom loss is a major error source in neutral-atom quantum computers, accounting for over 40% of the total physical errors in recent experiments. Its nonlinear and correlated nature poses significant challenges: current syndrome extraction circuits re...
Spectral Bath Engineering for Quantum-Enhanced Agrivoltaics: Advancing Efficiency and Environmental Sustainability via Non-Markovian Dynamics
Steve Cabrel Teguia Kouam, Theodore Goumai Vedekoi, Jean-Pierre Tchapet Njafa +2 more·Mar 4, 2026
As global demand for food and clean energy intensifies, agrivoltaic systems have emerged as a vital solution for land-use optimization. However, current designs overwhelmingly treat incident light as a classical photon flux, overlooking the quantum m...
Variational Gibbs State Preparation on Trapped-Ion Devices
Reece Robertson, Mirko Consiglio, Josey Stevens +3 more·Mar 4, 2026
We implement a variational quantum algorithm for Gibbs state preparation of a transverse-field Ising model on IonQ's quantum computers. To this end, we train the variational parameters via classical simulation and perform state tomography on the quan...
Enhancing Variational Quantum Eigensolvers for SU(2) Lattice Gauge Theory via Systematic State Preparation
Klaus Liegener, Dominik Mattern, Alexander Korobov +7 more·Mar 4, 2026
Computing the vacuum and energy spectrum in non-Abelian, interacting lattice gauge theories remains an open challenge, in part because approximating the continuum limit requires large lattices and huge Hilbert spaces. To address this difficulty with ...
Quantum anomaly for benchmarking quantum computing
Tomoya Hayata, Arata Yamamoto·Mar 4, 2026
Given the rapid advances in quantum computing hardware, establishing systematic strategies for verifying the correctness of quantum computations has become increasingly important. Exploiting the fact that the axial anomaly in gauge theories is exact ...
Mitigating many-body quantum crosstalk with tensor-network robust control
Nguyen H. Le, Florian Mintert, Eran Ginossar·Mar 4, 2026
Quantum crosstalk poses a major challenge to scaling up quantum computations as its strength is typically unknown and its effect accumulates exponentially as system size grows. Here, we show that many-body robust control can be utilized to suppress u...