Papers
Live trends in quantum computing research, updated daily from arXiv.
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Absence of measurement- and unraveling-induced entanglement transitions in continuously monitored one-dimensional free fermions
Clemens Niederegger, Tatiana Vovk, Elias Starchl +1 more·Oct 22, 2025
Continuous monitoring of one-dimensional free fermionic systems can generate phenomena reminiscent of quantum criticality, such as logarithmic entanglement growth, algebraic correlations, and emergent conformal invariance, but in a nonequilibrium set...
Sequential Semi-Device-Independent Quantum Randomness Certification
Carles Roch I Carceller, Hanwool Lee, Jonatan Bohr Brask +2 more·Oct 22, 2025
Quantum measurements under realistic conditions reveal only partial information about a system. Yet, by performing sequential measurements on the same system, additional information can be accessed. We investigate this problem in the context of semi-...
Accelerating Fault-Tolerant Quantum Computation with Good qLDPC Codes
Guo Zhang, Yuanye Zhu, Ying Li·Oct 22, 2025
We propose a fault-tolerant quantum computation scheme that is broadly applicable to quantum low-density parity-check (qLDPC) codes. The scheme achieves constant qubit overhead and a time overhead of $O(d^{a+o(1)})$ for any $[[n,k,d]]$ qLDPC code wit...
Krylov Complexity Under Hamiltonian Deformations and Toda Flows
Kazutaka Takahashi, Pratik Nandy, Adolfo del Campo·Oct 22, 2025
The quantum dynamics of a complex system can be efficiently described in Krylov space, the minimal subspace in which the dynamics unfolds. We apply the Krylov subspace method for Hamiltonian deformations, which provides a systematic way of constructi...
Lattice-reflection symmetry in tensor-network renormalization group with entanglement filtering in two and three dimensions
Xinliang Lyu, Naoki Kawashima·Oct 22, 2025
Tensor-network renormalization group (TNRG) is an efficient real-space renormalization group method for studying the criticality in both classical and quantum lattice systems. Exploiting symmetries of a system in a TNRG algorithm can simplify the imp...
Quantum Field Theory Universality Criterion for Layered Programmable Decompositions
Javier Álvarez-Vizoso, David Barral·Oct 22, 2025
The decomposition of arbitrary unitary transformations into sequences of simpler, physically realizable operations is a foundational problem in quantum information science, quantum control, and linear optics. We establish a 1D Quantum Field Theory mo...
Dynamic control of dipole decay rate via graphene plexcitons
Hira Asif, Taner Tarik Aytas, Ramazan Sahin·Oct 22, 2025
Active control of the radiative properties of quantum emitters through engineered light-matter interactions is a key challenge in nanophotonics and quantum optics. In this work, we demonstrate dynamic modulation of dipole's decay rate by exploiting t...
A Probabilistic Computing Approach to the Closest Vector Problem for Lattice-Based Factoring
Max O. Al-Hasso, Marko von der Leyen·Oct 22, 2025
The closest vector problem (CVP) is a fundamental optimization problem in lattice-based cryptography and its conjectured hardness underpins the security of lattice-based cryptosystems. Furthermore, Schnorr's lattice-based factoring algorithm reduces ...
Dipole-Dipole Interactions of Floquet States
Tim Ehret, Vyacheslav Shatokhin, Andreas Buchleitner·Oct 22, 2025
We formulate a Floquet-Markov Lindblad master equation for translationally cold two-level atoms driven by a strong monochromatic wave and coupled to a common electromagnetic bath. The resulting dipole-dipole interaction reproduces the anisotropic Hei...
Decoherence of a dissipative Brownian charged magneto-anharmonic oscillator: an information theoretic approach
Suraka Bhattacharjee, Koushik Mandal, Supurna Sinha·Oct 22, 2025
We study the decoherence of an anisotropic anharmonic oscillator in a magnetic field, coupled to a bath of harmonic oscillators at high and low temperatures. We solve the anharmonic oscillator problem using perturbative techniques and derive the non-...
Photonic scattering in 2D waveguide QED: Quantum Goos-Hänchen shift
Yongguan Ke, Zhenzhi Peng, Muhib Ullah +1 more·Oct 22, 2025
Quantum emitters coupled to traveling photons in waveguides, known as waveguide quantum electrodynamics (WQED), offer a powerful platform for understanding light-matter interactions and underpinning emergent quantum technologies. While WQED has been ...
Hybrid Quantum-Classical Eigensolver with Real-Space Sampling and Symmetric Subspace Measurements
Lei Xu, Ling Wang·Oct 22, 2025
We propose a hybrid quantum-classical eigensolver to address the computational challenges of simulating strongly correlated quantum many-body systems, where the exponential growth of the Hilbert space and extensive entanglement render classical metho...
Calculating the Luttinger liquid parameter for an interacting Kitaev chain quantum simulator
Troy Losey, Jin Zhang, S. -W. Tsai·Oct 22, 2025
In this work, we introduce a solid-state platform for building quantum simulators using implanted spin centers in solid-state materials. We build upon the proposal for an $S=1$ chain of spin centers coupled through the magnetic dipole-dipole interact...
Variational Quantum Algorithm for Unitary Dilation
S. X. Li, Keren Li, J. B. You +4 more·Oct 22, 2025
We introduce a hybrid quantum-classical framework for efficiently implementing approximate unitary dilations of non-unitary operators with enhanced noise resilience. The method embeds a target non-unitary operator into a subblock of a unitary matrix ...
Dynamics of Majorana Fermions on a Quantum Computer
Yuxiao Hang, Rosa Di Felice, A. Nakano +1 more·Oct 22, 2025
The study of quasiparticle dynamics is central to understanding non-equilibrium phenomena in quantum many-body systems. Direct simulation of such dynamics on quantum hardware has been limited by circuit depth and noise constraints. In this work, we u...
QORE : Quantum Secure 5G/B5G Core
V. Rathi, Lakshya Chopra, Rudraksh Rawal +4 more·Oct 22, 2025
Quantum computing is reshaping the security landscape of modern telecommunications. The cryptographic foundations that secure todays 5G systems, including RSA, Elliptic Curve Cryptography (ECC), and Diffie-Hellman (DH), are all susceptible to attacks...
Generalised Pinching Inequality
Andreas Winter·Oct 21, 2025
Hayashi's Pinching Inequality, which establishes a matrix inequality between a semidefinite matrix and a multiple of its "pinched" version via a projective measurement, has found many applications in quantum information theory and beyond. Here, we sh...
Ab Initio Free Energy Surfaces for Coupled Ion-Electron Transfer
Ethan Abraham, Martin Z. Bazant, Troy Van Voorhis·Oct 21, 2025
The Marcus theory of electron transfer assumes that diabatic energy gaps are sampled from a single ensemble. This assumption can break down in spatially anisotropic environments, such as Faradaic reactions at electrochemical interfaces, where distinc...
Self-Configuring Quantum Networks with Superposition of Trajectories
Albie Chan, Zheng Shi, Jorge Miguel-Ramiro +3 more·Oct 21, 2025
Quantum networks are a backbone of future quantum technologies thanks to their role in communication and scalable quantum computing. However, their performance is challenged by noise and decoherence. We propose a self-configuring approach that integr...
Practical Noise Mitigation for Quantum Annealing via Dynamical Decoupling: Toward Industry-Relevant Optimization using Trapped Ions
Sebastian Nagies, Chiara Capecci, Marcel Seelbach Benkner +6 more·Oct 21, 2025
Quantum annealing is a framework for solving combinatorial optimization problems. While it offers a promising path towards a practical application of quantum hardware, its performance in real-world devices is severely limited by environmental noise t...