Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Simulating fluid vortex interactions on a superconducting quantum processor
Ziteng Wang, Jiarun Zhong, Ke Wang +8 more·Jun 4, 2025
Vortex interactions are commonly observed in atmospheric turbulence, plasma dynamics, and collective behaviors in biological systems. However, accurately simulating these complex interactions is highly challenging due to the need to capture fine-scal...
Computational Complexity and Simulability of Non-Hermitian Quantum Dynamics
Brian Barch, Daniel Lidar·Jun 3, 2025
Non-Hermitian (NH) quantum systems demonstrate striking differences from their Hermitian counterparts, leading to claims of NH advantage in areas ranging from metrology to entanglement generation. We show that in the context of quantum computation, a...
Exceeding the Parametric Drive Strength Threshold in Nonlinear Circuits
Mingkang Xia, Crist'obal Lled'o, Matthew Capocci +7 more·Jun 3, 2025
Superconducting quantum circuits rely on strong drives to implement fast gates, high-fidelity readout, and state stabilization. However, these drives can induce uncontrolled excitations, so-called"ionization", that compromise the fidelity of these op...
Scalable Distributed Memory Implementation of the Quasi-Adiabatic Propagator Path Integral
R. Ovcharenko, Xiangyu Xu, B. Fingerhut·Jun 3, 2025
The accurate simulation of dissipative quantum dynamics subject to a non-Markovian environment poses persistent numerical challenges, in particular for structured environments where sharp mode resonances induce long-time system bath correlations. We ...
Fast Machine Learning for Quantum Control of Microwave Qudits on Edge Hardware
F. Sanders, Gaurav Agarwal, Luca P. Carloni +3 more·Jun 3, 2025
Quantum optimal control is a promising approach to improve the accuracy of quantum gates, but it relies on complex algorithms to determine the best control settings. CPU or GPU-based approaches often have delays that are too long to be applied in pra...
Quantum Complexity and Chaos in Many-Qudit Doped Clifford Circuits
Beatrice Magni, Xhek Turkeshi·Jun 2, 2025
We investigate the emergence of quantum complexity and chaos in doped Clifford circuits acting on qudits of odd prime dimension $d$. Using doped Clifford Weingarten calculus and a replica tensor network formalism, we derive exact results and perform ...
Quantum Circuit Encodings of Polynomial Chaos Expansions
Junaid Aftab, Christoph Schwab, Haizhao Yang +1 more·Jun 2, 2025
This work investigates the expressive power of quantum circuits in approximating high-dimensional, real-valued functions. We focus on countably-parametric holomorphic maps $u:U\to \mathbb{R}$, where the parameter domain is $U=[-1,1]^{\mathbb{N}}$. We...
Q-ARDNS-Multi: A Multi-Agent Quantum Reinforcement Learning Framework with Meta-Cognitive Adaptation for Complex 3D Environments
Umberto Gonccalves de Sousa·Jun 2, 2025
This paper presents Q-ARDNS-Multi, an advanced multi-agent quantum reinforcement learning (QRL) framework that extends the ARDNS-FN-Quantum model, where Q-ARDNS-Multi stands for"Quantum Adaptive Reward-Driven Neural Simulator - Multi-Agent". It integ...
Quantum photonics on a chip
Aviad Katiyi, Alina Karabchevsky School of Electrical, Computer Engineering +6 more·Jun 1, 2025
Optical chips for quantum photonics are cutting-edge technology, merging photonics and quantum mechanics to manipulate light at the quantum level. These chips are crucial for advancing quantum computing, secure communication, and precision sensing by...
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...
Precision bounds for bosonic quantum batteries
Beatriz Polo, Federico Centrone·May 30, 2025
We study precision charging in bosonic quantum batteries under a finite-energy constraint, using the signal-to-noise ratio (SNR) of delivered excitations as an operational metric directly tied to the energy measured at a load. At the state level, we ...
Optimal Haar random fermionic linear optics circuits
Paolo Braccia, N. L. Diaz, Martín Larocca +2 more·May 30, 2025
Sampling unitary Fermionic Linear Optics (FLO), or matchgate circuits, has become a fundamental tool in quantum information. Such capability enables a large number of applications ranging from randomized benchmarking of continuous gate sets, to fermi...
Productionizing Quantum Mass Production
W. Huggins, T. Khattar, Nathan Wiebe·May 30, 2025
For many practical applications of quantum computing, the most costly steps involve coherently accessing classical data. We help address this challenge by applying mass production techniques, which can reduce the cost of applying an operation multipl...
Graded Paraparticle Algebra of Majorana Fields for Multidimensional Quantum Computing with Structured Light
Fabrizio Tamburini, N. Leone, M. Sanna +1 more·May 29, 2025
We present a theoretical framework that integrates Majorana's infinite-component relativistic equation within the algebraic structure of paraparticles through the minimal nontrivial $\mathbb{Z}_2 \times \mathbb{Z}_2$--graded Lie algebras and $R$-matr...
Disambiguating Pauli noise in quantum computers
Edward H. Chen, Senrui Chen, Laurin E. Fischer +7 more·May 28, 2025
To successfully perform quantum computations, it is often necessary to first accurately characterize the noise in the underlying hardware. However, it is well known that fundamental limitations prevent the unique identification of the noise. This rai...
Designing Fault-Tolerant Blind Quantum Computation
G. Baranes, Iria W. Wang, Francisco Machado +6 more·May 27, 2025
Blind quantum computing (BQC) is a computational paradigm that allows a client with limited quantum capabilities to delegate quantum computations to a more powerful server while keeping both the algorithm and data hidden. However, in practice, existi...
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...
Line search by quantum logic spectroscopy enhanced with squeezing and statistical tests
Ivan Vybornyi, Shuying Chen, Lukas J. Spieß +2 more·May 26, 2025
In quantum logic spectroscopy, internal transitions of trapped ions and molecules can be probed by measuring the motional displacement caused by an applied light field of variable frequency. This provides a solution to ``needle in a haystack'' proble...
Correcting noisy quantum gates with shortcuts to adiabaticity
Moallison F. Cavalcante, Bariş Çakmak, Marcus V. S. Bonança +1 more·May 26, 2025
Unitary quantum gates constitute the building blocks of Quantum Computing in the circuit paradigm. In this work, we engineer a locally driven two-qubit Hamiltonian whose instantaneous ground-state dynamics generates the controlled-NOT (CNOT) quantum ...
A Distillation-Teleportation Protocol for Fault-Tolerant QRAM
Alexander M. Dalzell, Andr'as Gily'en, Connor T. Hann +5 more·May 26, 2025
We present a protocol for fault-tolerantly implementing the logical quantum random access memory (QRAM) operation, given access to a specialized, noisy QRAM device. For coherently accessing classical memories of size $2^{n}$, our protocol consumes on...