Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Circuit Pruning: Improving Fidelity via Compilation-Aware Circuit Approximation
Pau Escofet, Santiago Rodrigo, Rohit Sarma Sarkar +3 more·Jan 19, 2026
This work presents a routing-aware pruning strategy for quantum circuits executed on Noisy Intermediate-Scale Quantum (NISQ) devices. We propose a method to remove parametric controlled rotations whose small rotation angles do not justify the routing...
Microscopic Quantum Friction
Pedro H. Pereira, F. Impens, C. Farina +2 more·Jan 19, 2026
We report on a microscopic theory of quantum friction. Our approach investigates the interplay between the dispersive response and the relative center-of-mass motion of two ground-state atoms. This coupling yields a quantum force, which can be expres...
End-to-End Fidelity Analysis of Quantum Circuit Optimization: From Gate-Level Transformations to Pulse-Level Control
Rylan Malarchick·Jan 17, 2026
We present a comprehensive analysis of quantum circuit fidelity across the full compilation stack, from high-level gate optimization through pulse-level control. Using a modular integration framework connecting a C++ circuit optimizer with Lindblad-b...
Impact of Circuit Depth versus Qubit Count on Variational Quantum Classifiers for Higgs Boson Signal Detection
Fatih Maulana·Jan 17, 2026
High-Energy Physics (HEP) experiments, such as those at the Large Hadron Collider (LHC), generate massive datasets that challenge classical computational limits. Quantum Machine Learning (QML) offers a potential advantage in processing high-dimension...
Simulating Quantum Walk Hamiltonians without Pauli Decomposition
Mostafa Atallah, Alvin Gonzales, Daniel Dilley +3 more·Jan 16, 2026
In this work, we present a new algorithm for generating quantum circuits that efficiently implement continuous time quantum walks on arbitrary simple sparse graphs. The algorithm, called matching decomposition, works by decomposing a continuous-time ...
Concatenated continuous driving of silicon qubit by amplitude and phase modulation
Takuma Kuno, Takeru Utsugi, Andrew J. Ramsay +22 more·Jan 16, 2026
The rate of coherence loss is lower for a qubit under Rabi drive compared to a freely evolving qubit, $T_{2}^{\rm{Rabi}}>T_{2}^*$. Building on this principle, concatenated continuous driving (CCD) keeps the qubit under continuous drive to suppress no...
Stabilizer Code-Generic Universal Fault-Tolerant Quantum Computation
Nicholas J. C. Papadopoulos, Ramin Ayanzadeh·Jan 16, 2026
Fault-tolerant quantum computation allows quantum computations to be carried out while resisting unwanted noise. Several error-correcting codes have been developed to achieve this task, but none alone are capable of universal quantum computation. Thi...
Constant-Depth Unitary Preparation of Dicke States
Malvika Raj Joshi, Francisca Vasconcelos·Jan 15, 2026
Dicke states serve as a critical resource in quantum metrology, communication, and computation. However, unitary preparation of Dicke states is limited to logarithmic depth in standard circuit models and existing constant-depth protocols require meas...
Breaking the Storage-Bandwidth Tradeoff in Distributed Storage with Quantum Entanglement
Lei Hu, Mohamed Nomeir, Alptug Aytekin +1 more·Jan 15, 2026
This work investigates the use of quantum resources in distributed storage systems. Consider an $(n,k,d)$ distributed storage system in which a file is stored across $n$ nodes such that any $k$ nodes suffice to reconstruct the file. When a node fails...
Pairwise XOR and XNOR Gates in Squeezed Instantaneous Noise Based Logic
Nasir Kenarangui, Laszlo B. Kish, Arthur Powalka·Jan 15, 2026
Instantaneous noise-based logic (INBL) is a novel computing approach that encodes binary information using stochastic processes. It uses 2M orthogonal stochastic reference noises for M noise-bits to construct an exponentially large Hilbert space (hyp...
Electro-optic frequency comb Doppler thermometry
Sean M. Bresler, Erin M. Adkins, Stephen P. Eckel +4 more·Jan 15, 2026
We demonstrate a Doppler thermometer based on direct optical frequency comb spectroscopy of an $^{85}$Rb vapor with a chirped electro-optic frequency comb (EOFC). The direct EOFC Doppler thermometer is accurate to within its approximately 1 K statist...
Minimal-Energy Optimal Control of Tunable Two-Qubit Gates in Superconducting Platforms Using Continuous Dynamical Decoupling
Adonai Hilário da Silva, Octávio da Motta, Leonardo Kleber Castelano +1 more·Jan 15, 2026
We present a unified scheme for generating high-fidelity entangling gates in superconducting platforms by continuous dynamical decoupling (CDD) combined with variational minimal-energy optimal control. During the CDD stage, we suppress residual coupl...
The SpinPulse library for transpilation and noise-accurate simulation of spin qubit quantum computers
Benoît Vermersch, Oscar Gravier, Nathan Miscopein +6 more·Jan 15, 2026
We introduce SpinPulse, an open-source python package for simulating spin qubit-based quantum computers at the pulse-level. SpinPulse models the specific physics of spin qubits, particularly through the inclusion of classical non-Markovian noise. Thi...
Optimal control of a dissipative micromaser quantum battery in the ultrastrong coupling regime
Maristella Crotti, Luca Razzoli, Luigi Giannelli +2 more·Jan 15, 2026
We investigate the open system dynamics of a micromaser quantum battery operating in the ultrastrong coupling (USC) regime under environmental dissipation. The battery consists of a single-mode electromagnetic cavity sequentially interacting, via the...
Bridging Superconducting and Neutral-Atom Platforms for Efficient Fault-Tolerant Quantum Architectures
Xiang Fang, Jixuan Ruan, Sharanya Prabhu +4 more·Jan 15, 2026
The transition to the fault-tolerant era exposes the limitations of homogeneous quantum systems, where no single qubit modality simultaneously offers optimal operation speed, connectivity, and scalability. In this work, we propose a strategic approac...
Towards Minimal Fault-tolerant Error-Correction Sequence with Quantum Hamming Codes
Sha Shi, Xiao-Yang Xu, Min-Quan Cheng +2 more·Jan 15, 2026
The high overhead of fault-tolerant measurement sequences (FTMSs) poses a major challenge for implementing quantum stabilizer codes. Here, we address this problem by constructing efficient FTMSs for the class of quantum Hamming codes $[\![2^r-1, 2^r-...
Time-Dynamic Circuits for Fault-Tolerant Shift Automorphisms in Quantum LDPC Codes
Younghun Kim, Spiro Gicev, Martin Sevior +1 more·Jan 14, 2026
Quantum low-density parity-check (qLDPC) codes have emerged as a promising approach for realizing low-overhead logical quantum memories. Recent theoretical developments have established shift automorphisms as a fundamental building block for completi...
Non-invertible circuit complexity from fusion operations
Saskia Demulder·Jan 14, 2026
Modern understanding of symmetry in quantum field theory includes both invertible and non-invertible operations. Motivated by this, we extend Nielsen's geometric approach to quantum circuit complexity to incorporate non-invertible gates. These arise ...
Sparse quantum state preparation with improved Toffoli cost
Felix Rupprecht, Sabine Wölk·Jan 14, 2026
The preparation of quantum states is one of the most fundamental tasks in quantum computing, and a key primitive in many quantum algorithms. Of particular interest to areas such as quantum simulation and linear-system solvers are sparse quantum state...
Distributed Exact Quantum Amplitude Amplification Algorithm for Arbitrary Quantum States
Xu Zhou, Wenxuan Tao, Keren Li +1 more·Jan 14, 2026
In the noisy intermediate-scale quantum (NISQ) era, distributed quantum computation has garnered considerable interest, as it overcomes the physical limitations of single-device architectures and enables scalable quantum information processing. In th...