Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Polymer identification via undetected photons using a low footprint nonlinear interferometer
Atta Ur Rehman Sherwani, Emma Pearce, Philipp Hildenstein +5 more·Mar 23, 2026
Plastic pollution has become a critical global challenge, with microplastics pervading ecosystems and entering human food chains. Effectively monitoring this widespread contamination demands rapid, reliable, and portable material identification techn...
RotorMap and Quantum Fingerprints of DNA Sequences via Rotary Position Embeddings
Danylo Yakymenko, Maksym Chernyshev, Illia Savchenko +1 more·Mar 23, 2026
For strings of letters from a small alphabet, such as DNA sequences, we present a quantum encoding that empirically provides a strong correlation between the Levenshtein edit distance and the fidelity between quantum states defined by the encodings. ...
Probing the Spacetime Structure of Entanglement in Monitored Quantum Circuits with Graph Neural Networks
Javad Vahedi, Stefan Kettemann·Mar 23, 2026
Global entanglement in quantum many-body systems is inherently nonlocal, raising the question of whether it can be inferred from local observations. We investigate this problem in monitored quantum circuits, where projective measurements generate cla...
Dressed-state master equation for two strongly coupled two-level atoms with long-lived entanglement
Artemisa Villalobos-Ramirez, Juan Mauricio Torres·Mar 23, 2026
We derive a dressed-state master equation in Lindblad form for two strongly coupled two-level atoms. The resulting decay dynamics are governed by Lindblad operators that couple different dressed states. We show that the eigenvalues and eigenvectors o...
Robust Atom Interferometry with Double Bragg Diffraction
Rui Li·Mar 23, 2026
This thesis develops a general theoretical and numerical framework for achieving high-contrast atom interferometry based on double Bragg diffraction (DBD). While DBD offers intrinsic symmetry, reduced sensitivity to internal-state systematics, and su...
Revisiting Quantum Code Generation: Where Should Domain Knowledge Live?
Oscar Novo, Oscar Bastidas-Jossa, Alberto Calvo +2 more·Mar 23, 2026
Recent advances in large language models (LLMs) have enabled the automation of an increasing number of programming tasks, including code generation for scientific and engineering domains. In rapidly evolving software ecosystems such as quantum softwa...
A two-dimensional realization of the parity anomaly
Nehal Mittal, Tristan Villain, Mathis Demouchy +4 more·Mar 23, 2026
Quantum anomalies arise when symmetries of a classical theory cannot be preserved upon quantization, leading to unconventional topological responses. A prominent example is the parity anomaly of a single two-dimensional Dirac fermion, which enforces ...
Dissipative free fermions in disguise
Kohei Fukai, Hironobu Yoshida, Hosho Katsura·Mar 23, 2026
Recently, a class of spin chains known as ``free fermions in disguise'' (FFD) has been discovered, which possess hidden free-fermion spectra even though they are not solvable via the standard Jordan-Wigner transformation. In this work, we extend this...
Low Latency GNN Accelerator for Quantum Error Correction
Alessio Cicero, Luigi Altamura, Moritz Lange +2 more·Mar 23, 2026
Quantum computers have the potential to solve certain complex problems in a much more efficient way than classical computers. Nevertheless, current quantum computer implementations are limited by high physical error rates. This issue is addressed by ...
Efficiently architecting VQAs: Expressibility--Trainability--Resources Pareto-Optimality
Rodrigo M. Sanz, Andreu Angles-Castillo, Eduard Alarcon +1 more·Mar 23, 2026
Ansatz selection is a key factor in the performance of variational quantum algorithms (VQAs). While much of the state-of-the-art still relies on heuristic choices, an inadequate circuit structure can compromise both the expressive power and the train...
On the stability to noise of fermion-to-qubit mappings
Guillermo González-García, Filippo Maria Gambetta, Raul A. Santos·Mar 23, 2026
Quantum simulations before fault tolerance suffer from the intrinsic noise present in quantum computers. In this regime, extracting meaningful results greatly benefits from stability against that noise. This stability, defined as an error in observab...
Tangent equations of motion for nonlinear response functions
Atsushi Ono·Mar 23, 2026
Nonlinear response functions, formulated as multipoint correlation functions or Volterra kernels, encode the dynamical and spectroscopic properties of physical systems and underpin a wide range of nonlinear transport and optical phenomena. However, t...
Non-Markovian renormalization of optomechanical exceptional points
Aritra Ghosh, M. Bhattacharya·Mar 23, 2026
We investigate how non-Markovian mechanical dissipation affects exceptional points in linearized optomechanical systems with red-sideband drive. For a chosen non-Ohmic mechanical bath, we derive analytical conditions for the memory-renormalized excep...
Post-selective attack with multi-mode projection onto Fock subspace
Andrei Gaidash, George Miroshnichenko, Anton Kozubov·Mar 23, 2026
In this work we present a comprehensive analysis of a post-selective attack on quantum key distribution protocols employing phase-encoded linearly independent coherent states (or similar alternatives). The attack relies on multimode projection onto a...
Standalone optical frequency-offset locking electronics for atomic physics
K. Shalaby, T. Hunt, S. Moir +3 more·Mar 23, 2026
We present a standalone frequency-offset locking system for controlling narrow-linewidth lasers using off-the-shelf electronic components. We lock two frequency-doubled 1560 nm lasers to a stable primary laser operating at 780 nm via their optical be...
Deterministic feedforward-based generation of large optical coherent-state superposition
Michele N. Notarnicola, Marcin Jarzyna, Radim Filip·Mar 23, 2026
Large optical coherent-state superpositions are essential to advance quantum sensing, quantum repeaters and error-correction codes. We propose a deterministic feedforward protocol employing qubit-mode dispersive coupling, currently available in cavit...
The color code, the surface code, and the transversal CNOT: NP-hardness of minimum-weight decoding
Shouzhen Gu, Lily Wang, Aleksander Kubica·Mar 23, 2026
The decoding problem is a ubiquitous algorithmic task in fault-tolerant quantum computing, and solving it efficiently is essential for scalable quantum computing. Here, we prove that minimum-weight decoding is NP-hard in three quintessential settings...
Detection Time Distribution Predicted Using Absorbing Boundary Conditions and Imaginary Potentials
Alireza Jozani, Roderich Tumulka·Mar 23, 2026
There are several inequivalent proposals in the literature for how to compute the probability distribution of the time that a detector registers for the arrival of a quantum particle. For two of these proposals, based on absorbing boundary conditions...
Drinfeld Center as Quantum State Monodromy over Bloch Hamiltonians around Defects
Hisham Sati, Urs Schreiber·Mar 23, 2026
The Drinfeld center fusion category $\mathcal{Z}(\mathrm{Vec}_G)$ famously models anyons in certain lattice models. Here we demonstrate how its fusion rules may also describe topological order in fractional topological insulator materials, in the vic...
Theory Framework for Medium-Mass Muonic Atoms
S. Rathi, I. A. Valuev, Z. Sun +4 more·Mar 23, 2026
We present a state-of-the-art theoretical approach for computing bound-state energies in muonic atoms, incorporating improved quantum electrodynamics effects and nuclear polarization corrections with a systematic assessment of theoretical uncertainti...