Papers
Optimized Gottesman-Kitaev-Preskill Error Correction via Tunable Preprocessing
Xiang-Jiang Chen, Hao-Miao Jiang, Liu-Jun Wang +1 more·Apr 9, 2026
The Gottesman-Kitaev-Preskill (GKP) code is a promising bosonic candidate for realizing fault-tolerant quantum computation. Among existing error-correction protocols for GKP code, the Steane-type scheme is a canonical and widely adopted paradigm, yet...
Evaluating the performance of a weak-field homodyne receiver in quadrature phase-shift keying optical communication
Silvia Cassina, Alex Pozzoli, Michele N. Notarnicola +3 more·Apr 9, 2026
Quantum communication protocols require efficient detection schemes to maximize the information transfer rate between the sender and the receiver. To this aim, we have demonstrated that weak-field receivers, merging wave-like and particle-like featur...
Charging Quantum Batteries via Dissipative Quenches
Riccardo Grazi, Donato Farina, Niccolò Traverso Ziani +1 more·Apr 9, 2026
We investigate work extraction in open quantum batteries composed of interacting spin chains weakly coupled to engineered environments. Focusing on two- and four-qubit XX models initially prepared in thermal Gibbs states, we analyze how dissipation a...
Belief Propagation Convergence Prediction for Bivariate Bicycle Quantum Error Correction Codes
Anton Pakhunov·Apr 9, 2026
Decoding Bivariate Bicycle (BB) quantum error correction codes typically requires Belief Propagation (BP) followed by Ordered Statistics Decoding (OSD) post-processing when BP fails to converge. Whether BP will converge on a given syndrome is current...
Hardware-Aware Quantum Support Vector Machines
Adil Mubashir Chaudhry, Ali Raza Haider, Hanzla Khan +1 more·Apr 9, 2026
Deploying quantum machine learning algorithms on near-term quantum hardware requires circuits that respect device-specific gate sets, connectivity constraints, and noise characteristics. We present a hardware-aware Neural Architecture Search (NAS) ap...
Analysis of State Teleportation using Noisy Quantum Gates
Imama Tul Birrah Khan, Muhammad Faryad·Apr 9, 2026
Noise is a major challenge in quantum computing, affecting the reliability of quantum protocols. In this work, we analytically study the impact of various noise processes, such as depolarization, bit flip, and phase flip, on the quantum state telepor...
Optimal noisy quantum phase estimation with finite-dimensional states
Jin-Feng Qin, Jing Liu·Apr 9, 2026
Phase estimation in quantum interferometry is a major scenario where the quantum advantage is significantly revealed. Recently, the optimal finite-dimensional probe states (OFPSs) for phase estimation in two-mode quantum interferometry have been prov...
Complexity phase transition for continuous-variable cluster state
Byeongseon Go, Hyunseok Jeong, Changhun Oh·Apr 9, 2026
Continuous-variable (CV) cluster states offer a promising platform for large-scale measurement-based quantum computations (MBQC). However, finite squeezing inevitably introduces Gaussian noise during MBQC. While fault-tolerant MBQC schemes exist in p...
Control-centric quantum noise spectroscopy of time-ordered polyspectra
Kaiah Steven, Elliot Coupe, Qi Yu +1 more·Apr 9, 2026
Precise environmental-noise characterisation in open quantum systems is a key step toward high-fidelity quantum control and targeted decoherence suppression in computing and sensing applications. Non-parametric quantum noise spectroscopy (QNS) provid...
Ten-Second Electron-Spin Coherence in Isotopically Engineered Diamond
Takashi Yamamoto, H. Benjamin van Ommen, Kai-Niklas Schymik +7 more·Apr 8, 2026
Solid-state spin defects are a promising platform for quantum networks. A key requirement is to combine long ground-state spin-coherence times with a coherent optical transition for spin-photon entanglement. Here, we investigate the spin and optical ...
Physics-Informed Discrete-Event Simulation of Polarization-Encoded Quantum Networks
Abderrahim Amlou, Amar Abane, Cory M. Nunn +4 more·Apr 8, 2026
We extend the SeQUeNCe discrete-event simulator with physics-based models for polarization-encoded photonic quantum networks. Our framework integrates Jones-calculus optical components, including an SPDC Bell-state source, wave plates, and polarizing...
Quantum coherent transceivers toward Holevo-limited communications
Volkan Gurses, Suraj Samaga, Elianna Kondylis +1 more·Apr 8, 2026
The Holevo limit bounds the channel capacity of a communication channel in which information is encoded in quantum states in a Hilbert space at the transmitter and decoded using quantum measurements at the receiver. Saturating the Holevo limit requir...
A Simple and Robust Balanced Homodyne Detector for High-Repetition-Rate Pulsed Sources
Samuele Altilia, Edoardo Suerra, Pietro Puppi +3 more·Apr 8, 2026
We design and experimentally characterize a balanced homodyne detector optimized for high-repetition-rate (100 MHz) pulsed optical sources. Unlike conventional transimpedance-amplifier architectures, which suffer from nonlinearities and dynamic insta...
Strong-field ionization of atoms with bright squeezed vacuum light
Haodong Liu, Xiaoxiao Long, Peizeng Li +2 more·Apr 8, 2026
Strong-field ionization is the cornerstone of attosecond physics, which has been extensively studied under coherent-state driving. Recently, the interface between attosecond physics and quantum optics has emerged as a new frontier. Yet, owing to expe...
Environment-Assisted Decoherence Suppression of Optical Non-Gaussian States
Akihiro Machinaga, Naoki Aritomi, Ryoga Sakurada +10 more·Apr 8, 2026
Optical loss is a common bottleneck in photonic quantum information processing, undermining the quantum advantage over classical approaches. Although several countermeasures, such as quantum distillation and error correction, have been proposed, they...
Steady-State Statistical Modeling of Digitally Stabilized Laser Frequency with Markov-State Feedback
Swarnav Banik, Elliot Greenwald, Xing Pan·Apr 8, 2026
Laser frequency stabilization is conventionally analyzed using continuous-time control theory, which accurately models analog feedback but is insufficient for digital implementations where quantization, sampling, and stochastic noise shape the dynami...
Enhanced Precision in Entangled Quantum Clocks with Phase Estimation Algorithm
Won-Young Hwang·Apr 8, 2026
We present an enhanced entangled quantum clock protocol that incorporates a quantum phase estimation algorithm to directly estimate proper-time differences as an unknown phase. By employing highly entangled multi-clock states, the achievable uncertai...
High-Dimensional Quantum Photonics: Roadmap
Mehul Malik, Micheal Kues, Takuya Ikuta +30 more·Apr 7, 2026
The field of high-dimensional quantum photonics involves the use of multimode photonic degrees-of-freedom such as the spatial, temporal, or spectral structure of light to encode multi-level quantum states. Recent years have seen rapid progress in the...
Error Correction in Lattice Quantum Electrodynamics with Quantum Reference Frames
Elias Rothlin, Carla Ferradini, Lin-Qing Chen·Apr 7, 2026
Is gauge symmetry merely a redundancy in our description, or does it carry a deeper information-theoretic significance? Quantum error-correcting codes (QECCs) show that redundancy can serve as a resource for protecting information against noise. In t...
Nonvariational quantum optimisation approaches to pangenome-guided sequence assembly
Josh Cudby, Sergii Strelchuk·Apr 7, 2026
Assembling genomes from short-read sequencing data remains difficult in repetitive regions, where reference bias and combinatorial complexity limit existing methods. Pangenome-guided sequence assembly (PGSA) mitigates reference bias by reconstructing...