Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Does the survival and sudden death of quadripartite steering in curved spacetime truly depend on multi-directionality?
Xiaobao Liu, Wentao Liu, Si-Han Shang +1 more·Nov 3, 2025
We systematically investigate the directional dependence of Gaussian quadripartite quantum steering and its redistribution among different modes in the background of a Schwarzschild black hole. For physically accessible sectors, we identify three dis...
Security in a prepare-and-measure quantum key distribution protocol when the receiver uses weak values to guess the sender's bits
Rajendra Singh Bhati·Nov 3, 2025
The weak values and weak measurement formalism were initially limited to pure states, which were later extended to mixed states, leading to intriguing applications in quantum information processing tasks. Weak values are considered to be abstract pro...
High-temperature superconducting Majorana fermions platforms in the layered Kitaev Materials: Case study of $Li_2IrO_3$
Elnaz Rostampour, Badie Ghavami·Nov 3, 2025
Recent advances in Kitaev materials have highlighted their potential to host Majorana fermions without or high-temperature of superconductivity. In this research, we propose $Li_2IrO_3$ as a promising High-temperature superconducting platform support...
Graph Structured Operator Inequalities and Tsirelson-Type Bounds
James Tian·Nov 3, 2025
We establish operator norm bounds for bipartite tensor sums of self-adjoint contractions. The inequalities generalize the analytic structure underlying the Tsirelson and CHSH bounds, giving dimension-free estimates expressed through commutator and an...
Quantum Energy Teleportation under Equilibrium and Nonequilibrium Environments
Xiaokun Yan, Kun Zhang, Jin Wang·Nov 3, 2025
Quantum energy teleportation (QET), implemented via local operations and classical communication, enables carrier-free energy transfer by exploiting quantum resources. While QET has been extensively studied theoretically and validated experimentally ...
Non-unitary Quantum Physical Unclonable Functions: Modelling, Simulation, and Evaluation under Open Quantum Dynamics
Mohammadreza Vali, Hossein Aghababa, Nasser Yazdani·Nov 3, 2025
Physical Unclonable Functions (PUFs) provide hardware-level security by exploiting intrinsic randomness to produce device-unique responses. However, machine learning and side-channel attacks increasingly undermine their classical assumptions, calling...
Quantum Information Ordering and Differential Privacy
Naqueeb Ahmad Warsi, Ayanava Dasgupta, Masahito Hayashi·Nov 3, 2025
We study quantum differential privacy (QDP) by defining a notion of the order of informativeness between pairs of quantum states. In particular, we show that if the hypothesis testing divergence of one pair dominates over that of the other pair, then...
Broadly tunable quantum-enhanced Raman microscopy for advancing bioimaging
Dmitrii Akatev, Yijian Meng, Jonathan Brewer +3 more·Nov 3, 2025
Stimulated Raman scattering (SRS) microscopy has emerged as a powerful technique for probing the spatiotemporal dynamics of molecular bonds with exceptional sensitivity, resolution, and speed. However, classically, its performance remains fundamental...
Fast and Robust Remote Two-Qubit Gates on Distributed Qubits
Yunan Li, Xi Zhang, Weixin Zhang +4 more·Nov 3, 2025
Distributed quantum computing offers a potential solution to the complexity of superconducting chip hardware layouts and error correction algorithms. High-quality gates between distributed chips enable the simplification of existing error correction ...
Entanglement estimation of Werner states with a quantum extreme learning machine
Hajar Assil, Abderrahim El Allati, Gian Luca Giorgi·Nov 3, 2025
Quantum Extreme Learning Machines (QELMs) have emerged as a potent tool for various quantum information processing tasks. We present a QELM protocol for estimating the amount of entanglement in Werner states. The protocol requires the generation of a...
Emergent Area Operators in the Boundary
Ronak M Soni·Nov 3, 2025
In some cases in two and three bulk dimensions without bulk local degrees of freedom, I look for area operators in a fixed boundary theory. In each case, I define an exact quantum error-correcting code (QECC) and show that it admits a central decompo...
A Stochastic Quantum Neural Network Model for Ai
Gautier-Edouard Filardo, Thibaut Heckmann·Nov 3, 2025
Artificial intelligence (AI) has drawn significant inspiration from neuroscience to develop artificial neural network (ANN) models. However, these models remain constrained by the Von Neumann architecture and struggle to capture the complexity of the...
Non-Markovian dynamics in nonstationary Gaussian baths: a hierarchy of pure states approach
Vladislav Sukharnikov, Stasis Chuchurka, Frank Schlawin·Nov 3, 2025
Building on the standard hierarchy of pure states (HOPS) approach, we construct a generalized formulation suitable for open quantum systems interacting with nonstationary Gaussian baths, potentially extending its applicability to nonequilibrium baths...
Distinct Critical Scaling of Quantum Fisher Information in a Quantum Rabi Triangle System
Yuyang Tang, Yu Yang, Min An +1 more·Nov 3, 2025
Critical properties of a quantum system are recognized as valuable resources for quantum metrology. In this work, we investigate the criticality-enhanced sensing in a quantum Rabi triangle system, which exhibits multiple phases. Around the phase boun...
Light-induced Frequency Shift and Relaxation of Ground-State 3He via Metastability-Exchange Collisions
L. Y. Wu, H. Yan·Nov 3, 2025
Metastability-exchange collisions (MECs) lie at the heart of metastability-exchange optical pumping (MEOP) in 3He, enabling the transfer of polarization from the metastable state to the ground state, as well as the optical detection of nuclear magnet...
Multi-stage quantum walks for finding Ising ground states
Asa Hopkins, Viv Kendon·Nov 3, 2025
One way to approximate a quantum annealing schedule is to use multiple quantum walks chained together, without intermediate measurements, to produce a multi-stage quantum walk (MSQW). Previous work has shown that MSQW is better than QAOA (quantum alt...
Strongly coupled giant-atom waveguide quantum electrodynamics
Zong-Wei Wu, Jun-Hong An·Nov 3, 2025
Describing systems of superconducting atoms coupled to a continuum of photonic modes at multiple separated locations in a waveguide, waveguide quantum electrodynamics (QED) with giant atoms has emerged as a promising platform for realizing quantum in...
Super-resolved reconstruction of single-photon emitter locations from $g^{(2)}(0)$ maps
Sonali Gupta, Amit Kumar, Vikas S Bhat +1 more·Nov 3, 2025
Single-photon sources are vital for emerging quantum technologies. In particular, Nitrogen-vacancy (NV) centers in diamond are promising due to their room-temperature stability, long spin coherence, and compatibility with nanophotonic structures. A k...
High-fidelity all-microwave CZ gate with partial erasure-error detection via a transmon coupler
Shotaro Shirai, Shinichi Inoue, Shuhei Tamate +3 more·Nov 3, 2025
Entangling gates between neighboring physical qubits are essential for quantum error correction. Implementing them in an all-microwave manner simplifies signal routing and control apparatus of superconducting quantum processors. We propose and experi...
Quantum Deep Learning Still Needs a Quantum Leap
Hans Gundlach, Hrvoje Kukina, Jayson Lynch +1 more·Nov 3, 2025
Quantum computing technology is advancing rapidly. Yet, even accounting for these trends, a quantum leap would be needed for quantum computers to meaningfully impact deep learning over the coming decade or two. We arrive at this conclusion based on a...