Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Entangling logical qubits without physical operations
Jin Ming Koh, Anqi Gong, Andrei C. Diaconu +6 more·Jan 28, 2026
Fault-tolerant logical entangling gates are essential for scalable quantum computing, but are limited by the error rates and overheads of physical two-qubit gates and measurements. To address this limitation, we introduce phantom codes-quantum error-...
Quench spectroscopy of amplitude modes in a one-dimensional critical phase
Hyunsoo Ha, David A. Huse, Rhine Samajdar·Jan 28, 2026
We investigate the emergence of an amplitude (Higgs-like) mode in the gapless phase of the $(1+1)$D XXZ spin chain. Unlike conventional settings where amplitude modes arise from spontaneous symmetry breaking, here, we identify a symmetry-preserving u...
Neural Quantum States in Mixed Precision
Massimo Solinas, Agnes Valenti, Nawaf Bou-Rabee +1 more·Jan 28, 2026
Scientific computing has long relied on double precision (64-bit floating point) arithmetic to guarantee accuracy in simulations of real-world phenomena. However, the growing availability of hardware accelerators such as Graphics Processing Units (GP...
Entangled photon pair excitation and time-frequency filtered multidimensional photon correlation spectroscopy as a probe for dissipative exciton kinetics
Arunangshu Debnath, Shaul Mukamel·Jan 28, 2026
In molecular aggregates, multiple delocalized exciton states interact with phonons, making the state-resolved spectroscopic monitoring of dynamics challenging. We propose a protocol that combines photon-entanglement-enhanced narrowband excitation of ...
Foundations of Quantum Optics for Quantum Information: Crash Course on Nonclassical States and Quantum Correlations
Jhoan Eusse, Esteban Vasquez, Tom Rivlin +1 more·Jan 28, 2026
Nonclassical states of light and their correlations lie at the heart of quantum optics, serving as fundamental resources that underpin both the exploration of quantum phenomena and the realisation of quantum information protocols. These lecture notes...
A Hybrid Jump-Diffusion Model for Coherent Optical Control of Quantum Emitters in hBN
Saifian Farooq Bhat, Michael K. Koch, Sachin Negi +2 more·Jan 28, 2026
Hexagonal boron nitride (hBN) has emerged as a promising two-dimensional host for stable single-photon emission owing to its wide bandgap, high photostability, and compatibility with nanophotonic integration. We present a simulation-based study of te...
Micro-mobility dispatch optimization via quantum annealing incorporating historical data
Takeru Goto, Masayuki Ohzeki·Jan 28, 2026
This paper proposes a novel dispatch formulation for micro-mobility vehicles using a Quantum Annealer (QA). In recent years, QA has gained increasing attention as a high-performance solver for combinatorial optimization problems. Meanwhile, micro-mob...
Contextuality as an External Bookkeeping Cost under Fixed Shared-State Semantics
Song-Ju Kim·Jan 28, 2026
Contextuality is a central feature distinguishing quantum from classical probability theories, but its operational meaning is often stated only qualitatively. In this Letter, we study a simple information-theoretic question: how much additional conte...
Ensemble-Based Quantum Signal Processing for Error Mitigation
Suying Liu, Yulong Dong, Dong An +1 more·Jan 27, 2026
Despite rapid advances in quantum hardware, noise remains a central obstacle to deploying quantum algorithms on near-term devices. In particular, random coherent errors that accumulate during circuit execution constitute a dominant and fundamentally ...
Superfluidity in the spin-1/2 XY model with power-law interactions
Muhammad Shaeer Moeed, Costanza Pennaforti, Adrian Del Maestro +1 more·Jan 27, 2026
In trapped-ion quantum simulators, effective spin-1/2 XY interactions can be engineered via laser-induced coupling between internal atomic states and collective phonon modes. In the simplest one-dimensional ($1d$) traps, these interactions decay as a...
Quantum Channels on Graphs: a Resonant Tunneling Perspective
Giuseppe Catalano, Farzad Kianvash, Vittorio Giovannetti·Jan 27, 2026
Quantum transport on structured networks is strongly influenced by interference effects, which can dramatically modify how information propagates through a system. We develop a quantum-information-theoretic framework for scattering on graphs in which...
A Surface-Scaffolded Molecular Qubit
Tian-Xing Zheng, M. Iqbal Bakti Utama, Xingyu Gao +24 more·Jan 27, 2026
Fluorescent spin qubits are central building blocks of quantum technologies. Placing these qubits at surfaces maximizes coupling to nearby spins and fields, enabling nanoscale sensing and facilitating integration with photonic and superconducting dev...
Real-Time Iteration Scheme for Dynamical Mean-Field Theory: A Framework for Near-Term Quantum Simulation
Chakradhar Rangi, Aadi Singh, Ka-Ming Tam·Jan 27, 2026
We present a time-domain iteration scheme for solving the Dynamical Mean-Field Theory (DMFT) self-consistent equations using retarded Green's functions in real time. Unlike conventional DMFT approaches that operate in imaginary time or frequency spac...
Simple broadband signal detection at the fundamental limit
Anthony M. Polloreno, Graeme Smith·Jan 27, 2026
Broadband detection of a weak oscillatory field with unknown carrier frequency underlies magnetometry, axion searches and gravitational-wave sensing. We show that the Grover-like integration-time lower bound for this task is a geometric corollary an ...
DISCOVER: A Physics-Informed, GPU-Accelerated Symbolic Regression Framework
Udaykumar Gajera, Mohsen Sotoudeh, Kanchan Sarkar +1 more·Jan 27, 2026
Symbolic Regression (SR) enables the discovery of interpretable mathematical relationships from experimental and simulation data. These relationships are often coined descriptors which are defined as a fundamental materials property that is directly ...
A two-mode model for black hole evaporation and information flow
Erfan Bayenat, Babak Vakili·Jan 27, 2026
We develop and analyze a two-oscillator model for black hole evaporation in which an effective geometric degree of freedom and a representative Hawking radiation mode are described by coupled harmonic oscillators with opposite signs in their free Ham...
Efficient Application of Tensor Network Operators to Tensor Network States
Richard M. Milbradt, Shuo Sun, Christian B. Mendl +2 more·Jan 27, 2026
The performance of tensor network methods has seen constant improvements over the last few years. We add to this effort by introducing a new algorithm that efficiently applies tree tensor network operators to tree tensor network states inspired by th...
Quantum computing of the nonlinear Schrödinger equation via measurement-induced potential reconstruction
Kaiwen Weng, Zhaoyuan Meng, Guohui Hu·Jan 27, 2026
The nonlinear Schrödinger equation (NLSE) is a fundamental model that describes diverse complex phenomena in nature. However, simulating the NLSE on a quantum computer is inherently challenging due to the presence of the nonlinear term. We propose a ...
The cost of quantum algorithms for biochemistry: A case study in metaphosphate hydrolysis
Ryan LaRose, Antonios M. Alvertis, Alan Bidart +10 more·Jan 27, 2026
We evaluate the quantum resource requirements for ATP/metaphosphate hydrolysis, one of the most important reactions in all of biology with implications for metabolism, cellular signaling, and cancer therapeutics. In particular, we consider three algo...
Fault-tolerant quantum simulation of the Pauli-Breit Hamiltonian for ab initio hybrid quantum-classical molecular design with applications to photodynamic therapy
Emil Zak·Jan 26, 2026
Relativistic spin effects drive subtle molecular phenomena ranging from intersystem crossing in photodynamic therapy to spin-mediated catalysis and high-resolution spectroscopy. These effects are described by the Pauli-Breit Hamiltonian, which extend...