Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Dispersion Outperforms Absorption: EIT-Enhanced Atomic Localization and Gradient Sensing with Super-Gaussian Beams
Mahboob Ul Haq·Nov 29, 2025
This work presents a comprehensive theoretical comparison between absorption-based and electromagnetically induced transparency (EIT)-based atomic gradient sensing in a four-level tripod system. Both methods were evaluated under identical and optimiz...
Controlling Dissipative Topology Through Floquet Driving: From Transient Diagnostics to Boundary States Isolation
Koustav Roy, Shahroze Shahab, Saurabh Basu·Nov 28, 2025
Engineering dissipative dynamics in open quantum systems is under active focus, especially in topological settings where resilient edge modes are expected to exhibit decay rates distinct from the bulk. In this letter, we propose an efficient dynamica...
Refinements of the Eigenstate Thermalization Hypothesis under Local Rotational Invariance via Free Probability
Elisa Vallini, Laura Foini, Silvia Pappalardi·Nov 28, 2025
The Eigenstate Thermalization Hypothesis (ETH) was developed as a framework for understanding how the principles of statistical mechanics emerge in the long-time limit of isolated quantum many-body systems. Since then, ETH has shifted the attention t...
Phonon-induced frequency shift in semiconductor spin qubits
Irina Heinz, Jeroen Danon, Guido Burkard·Nov 28, 2025
Spin qubits have proven to be a feasible candidate for quantum computation, and some realizations of spin qubits already benefit from advanced device manufacturing in the semiconductor industry. Compared to superconducting platforms, spin qubits can ...
Tunable dual-band atomic mirror based on subwavelength atomic arrays under electromagnetically induced transparency
Shiwen Sun, Yi-Xin Wang, Xiao Liu +1 more·Nov 28, 2025
Subwavelength atomic arrays offer a powerful platform for engineering cooperative light-matter interactions and enabling quantum metasurfaces. We demonstrate that a two-dimensional array of three-level atoms operating under electromagnetically induce...
Evidence for unexpectedly low quasiparticle generation rates across Josephson junctions of driven superconducting qubits
Byoung-moo Ann, Sang-Jun Choi, Hee Chul Park +6 more·Nov 28, 2025
Recent studies find that even drives far below the superconducting gap frequency may cause drive-induced quasiparticle generation (QPG) across Josephson junctions (JJs) of superconducting qubits (SCQs), posing a serious concern for fault-tolerant sup...
Which-crystal information and wave-particle duality in induced-coherence interferometry
L. Theerthagiri·Nov 28, 2025
We provide an operational reinterpretation of wave-particle complementarity in the low-gain Zou-Wang-Mandel (ZWM) induced-coherence interferometer. In the low gain limit, each photon pair is emitted by either one of two nonlinear crystals. Preparing ...
On-Demand Control of Input-State-Dependent Single-Photon Scattering in Multi-Mode Waveguides
Yan Liu, Qing-Ao Xiang, Xin-Yuan Yang +4 more·Nov 28, 2025
Precise control of a single photon transport in broadband, multi-mode waveguides is a fundamental challenge for scalable quantum networks. We propose a theoretical scheme for on-demand control of single-photon scattering using a driven $Λ$-type emitt...
Nonreciprocal transmission in a cavity-magnon system by rotational Sagnac effect
Zhe-Qi Yang, Si-Qi Lin, Zhi-Rong Zhong·Nov 28, 2025
Ultrahigh nonreciprocal transmission has been achieved in a cavity-magnon system, which consists of two whispering gallery modes (WGMs) and a single magnon mode within a magnetic insulator yttrium iron garnet sphere. The nonreciprocal frequency shift...
Tunable and nonlinearity-enhanced dispersive-plus-dissipative coupling in photon-pressure circuits
Mohamad Kazouini, Janis Peter, Zisu Emily Guo +5 more·Nov 27, 2025
Photon-pressure circuits are the circuit implementation of the cavity optomechanical Hamiltonian and discussed for qubit readout, low-frequency quantum photonics and dark matter axion detection. Due to the enormous design flexibility of superconducti...
Optimal Quantum Measurements with respect to the Fidelity
Datong Chen, Huangjun Zhu·Nov 27, 2025
Fidelity is the standard measure for quantifying the similarity between two quantum states. It is equal to the square of the minimum Bhattacharyya coefficient between the probability distributions induced by quantum measurements on the two states. Th...
Computation and Verification of Spectra for Non-Hermitian Systems
Catherine Drysdale, Matthew Colbrook, Michael T. M. Woodley·Nov 27, 2025
We establish a connection between quantum mechanics and computation, revealing fundamental limitations for algorithms computing spectra, especially in non-Hermitian settings. Introducing the concept of locally trivial pseudospectra (LTP), we show suc...
Quantum resource degradation theory within the framework of observational entropy decomposition
Xiang Zhou·Nov 27, 2025
We introduce a theory of quantum resource degradation grounded in a decomposition of observational entropy, which partitions the total resource into inter-block coherence ($\mathcal{C}_{\text{rel}}$) and intra-block noise ($\mathcal{D}_{\text{rel}}$)...
Superradiant decay in non-Markovian Waveguide Quantum Electrodynamics
Rosa Lucia Capurso, Giuseppe Calajó, Simone Montangero +5 more·Nov 27, 2025
An array of initially excited emitters coupled to a one-dimensional waveguide exhibits superradiant decay under the Born-Markov approximation, manifested as a coherent burst of photons in the output field. In this work, we employ tensor-network metho...
Twisted (co)homology of non-orientable Weyl semimetals
Thijs Douwes, Marcus Stålhammar·Nov 27, 2025
The quasi-particle excitations in Weyl semimetals, known as Weyl fermions, are usually forced to emerge in charge-conjugate pairs by the Nielsen--Ninomiya theorem. When the Brillouin zone is non-orientable, this constraint is replaced by a $\mathbb{Z...
Local Equivalences of Graph States
Nathan Claudet·Nov 27, 2025
Graph states form a large family of quantum states that are in one-to-one correspondence with mathematical graphs. Graph states are used in many applications, such as measurement-based quantum computation, as multipartite entangled resources. It is t...
Quantum phase transitions of the anisotropic Dicke-Ising model in driven Rydberg arrays
Bao-Yun Dong, Ying Liang, Stefano Chesi +1 more·Nov 27, 2025
We study the properties of a generalized Dicke-Ising model realized with an array of Rydberg atoms, driven by microwave electric fields and coupled to an optical cavity. As this platform allows for a precisely tunable anisotropy parameter, the model ...
Measure and Forget Dynamics in Random Circuits
Yucheng He, Todd A. Brun·Nov 26, 2025
"Forgetful" measurements-physically similar to dephasing-are of interest both for applications to fault-tolerant quantum computing and fundamentally, in studying how entanglement and entropy spread. This paper investigates measurement-induced phase t...
Holographically Emergent Gauge Theory in Symmetric Quantum Circuits
Akash Vijay, Jong Yeon Lee·Nov 26, 2025
We develop a novel holographic framework for mixed-state phases in random quantum circuits, both unitary and non-unitary, with a global symmetry $G$. Viewing the circuit as a tensor network, we decompose it into two parts: a symmetric layer, which de...
Factorisation conditions and causality for local measurements in QFT
Robin Simmons, Maria Papageorgiou, Marios Christodoulou +1 more·Nov 26, 2025
Quantum operations that are perfectly admissible in non-relativistic quantum theory can enable signalling between spacelike separated regions when naively imported into quantum field theory (QFT). Prominent examples of such "impossible measurements",...