Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
NonHermitian Topological Phases in a Hermitian Modified Bosonic Kitaev Chain
Raditya Weda Bomantara, Ibsal Assi, J. P. F. LeBlanc +1 more·May 21, 2025
We present a modification to the bosonic Kitaev chain that, despite being Hermitian, supports both nonHermitian skin effect and nontrivial topological edge modes in its excitation Hamiltonian. We establish an exact mapping between the excitation Hami...
On Dequantization of Supervised Quantum Machine Learning via Random Fourier Features
Mehrad Sahebi, Alice Barthe, Yudai Suzuki +2 more·May 21, 2025
In the quest for quantum advantage, a central question is under what conditions can classical algorithms achieve a performance comparable to quantum algorithms--a concept known as dequantization. Random Fourier features (RFFs) have demonstrated poten...
Problem specific ion native ansatz for combinatorial optimization
Georgii Paradezhenko, Daniil Rabinovich, Ernesto Campos +1 more·May 21, 2025
Variational quantum algorithms have become a standard approach for solving a wide range of problems on near-term quantum computers. Identifying an appropriate ansatz configuration for variational algorithms, however, remains a challenging task, espec...
Dissipative phase transition of interacting non-reciprocal fermions
Rafael D. Soares, Matteo Brunelli, Marco Schirò·May 21, 2025
While non-reciprocal couplings are ubiquitous in classical systems, their impact on quantum many-body criticality and entanglement remains largely unexplored. Using exact numerical simulations, we study an interacting fermionic chain subject to non-r...
Measurement-free quantum error correction optimized for biased noise
Katharina Brechtelsbauer, Friederike Butt, David F. Locher +4 more·May 21, 2025
In this paper, we derive optimized measurement-free protocols for quantum error correction and the implementation of a universal gate set optimized for an error model that is noise biased . The noise bias is adapted for neutral atom platforms, where ...
Transformer-Based Neural Quantum Digital Twins for Many-Body Quantum Simulation and Optimal Annealing Schedule Design
Jianlong Lu, Hanqiu Peng, Ying Chen·May 21, 2025
We introduce Transformer-based Neural Quantum Digital Twins (Tx-NQDTs) to simulate full adiabatic dynamics of many-body quantum systems, including ground and low-lying excited states, at low computational cost. Tx-NQDTs employ a graph-informed Transf...
Search for Dark Photon Dark Matter with a Mass around 36.1 μeV Using a Frequency-tunable Cavity Controlled through a Coupled Superconducting Qubit
Kan Nakazono, Shion Chen, Hajime Fukuda +10 more·May 21, 2025
We report the results of a search for dark photon dark matter using a cavity that employs a transmon qubit as a frequency tuner. The tuning mechanism utilizes the energy level shift arising from the mode mixing between the qubit and the cavity mode. ...
A Fully Device-Independent Ternary Quantum Key Distribution Protocol Based on the Impossible Colouring Game
Aniket Basak, Rajeet Ghosh, Rohit Sarma Sarkar +2 more·May 21, 2025
We propose a Ternary Fully Device-Independent Quantum Key Distribution (TFDIQKD) protocol based on the two-party Impossible Colouring pseudo-telepathy game, utilizing maximally entangled qutrit states to enable secure key generation between distant p...
Hyperscaling of Fidelity and Operator Estimations in the Critical Manifold
Matheus H. Martins Costa, Flavio S. Nogueira, Jeroen van den Brink·May 21, 2025
By formulating the renormalization group as a quantum channel acting on density matrices in Quantum Field Theories (QFTs), we show that ground-state expectation values of observables supported on slow momentum modes can be approximated by their avera...
Prethermalization, shadowing breakdown, and the absence of Trotterization transition in quantum circuits
Marko Znidaric·May 21, 2025
One of the premier utilities of present day noisy quantum computers is simulation of many-body quantum systems. We study how long in time is such a discrete-time simulation representative of a continuous time Hamiltonian evolution, namely, a finite t...
Robust and compact single-lens crossed-beam optical dipole trap for Bose-Einstein condensation in microgravity
Jan Simon Haase, Alexander Fieguth, Igor Bröckel +3 more·May 21, 2025
We present a novel concept for a compact and robust crossed-beam optical dipole trap (cODT) based on a single lens, designed for the efficient generation of Bose-Einstein condensates (BECs) under dynamic conditions. The system employs two independent...
A Unified Approach to Quantum Contraction and Correlation Coefficients
Ian George, Marco Tomamichel·May 21, 2025
The maximal correlation coefficient measures the linear correlation in a bipartite distribution and contraction coefficients measure how much information is lost under a noisy channel. Remarkably, Raginsky established a close relation between these t...
A Temperature Change can Solve the Deutsch-Jozsa Problem : An Exploration of Thermodynamic Query Complexity
Jake Xuereb·May 21, 2025
We demonstrate how a single heat exchange between a probe thermal qubit and multi-qubit thermal machine encoding a Boolean function, can determine whether the function is balanced or constant, thus providing a novel thermodynamic solution to the Deut...
Readout sweet spots for spin qubits with strong spin-orbit interaction
Domonkos Svastits, Bence Het'enyi, G'abor Sz'echenyi +4 more·May 21, 2025
Qubit readout schemes often deviate from ideal projective measurements, introducing critical issues that limit quantum computing performance. In this work, we model charge-sensing-based readout for semiconductor spin qubits in double quantum dots, an...
Resource Analysis of Low-Overhead Transversal Architectures for Reconfigurable Atom Arrays
Hengyun Zhou, Casey Duckering, Chen Zhao +5 more·May 21, 2025
Neutral atom arrays have recently emerged as a promising platform for fault-tolerant quantum computing. Based on these advances, including dynamically-reconfigurable connectivity and fast transversal operations, we present a low-overhead architecture...
Depth-Efficient Quantum Circuit Synthesis for Deterministic Dicke State Preparation
Pei Yuan, Shengyu Zhang·May 21, 2025
The $n$-qubit $k$-weight Dicke states $|D^n_k\rangle$, defined as the uniform superposition of all computational basis states with exactly $k$ qubits in state $|1\rangle$, form a basis of the symmetric subspace and represent an important class of ent...
Mitigating cosmic-ray-like correlated events with a modular quantum processor
Xuntao Wu, Yash J. Joshi, Haoxiong Yan +14 more·May 21, 2025
Quantum processors based on superconducting qubits are being scaled to larger qubit numbers, enabling the implementation of small-scale quantum error correction codes. However, catastrophic chip-scale correlated errors have been observed in these pro...
Tailoring the electronic configurations of YPc2 on Cu(111): decoupling strategies for molecular spin qubit platforms.
Soyoung Oh, Franklin H Cho, W. Soe +9 more·May 21, 2025
Molecule-based spin architectures have been proposed as promising platforms for quantum computing. Among the potential spin qubit candidates, yttrium phthalocyanine double-decker (YPc2) features a diamagnetic metal ion core that stabilizes the molecu...
Impact of Clifford operations on non-stabilizing power and quantum chaos
Naga Dileep Varikuti, Soumik Bandyopadhyay, Philipp Hauke·May 20, 2025
Non-stabilizerness, alongside entanglement, is a crucial ingredient for fault-tolerant quantum computation and achieving a genuine quantum advantage. Despite recent progress, a complete understanding of the generation and thermalization of non-stabil...
Assessing Projected Quantum Kernels for the Classification of IoT Data
Francesco D'Amore, Luca Mariani, Carlo Mastroianni +4 more·May 20, 2025
The use of quantum computing for machine learning is among the most promising applications of quantum technologies. Quantum models inspired by classical algorithms are developed to explore some possible advantages over classical approaches. A primary...