Papers
Live trends in quantum computing research, updated daily from arXiv.
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16,707 papers in 12 months (-57% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
The quantum-advantage resource in multimode OPA light: Identification, optimization, extraction
Vitaly Kocharovsky, Kunwar Kalra·Jun 17, 2026
We introduce the notion and reveal remarkable properties of quantum complexity resource contained in a mixed multimode Gaussian state and providing universal quantitative characterization of its quantum advantage. The notion is based on convex optimi...
Separation of Statistical Complexity and Trainability in Variational Quantum Circuits
Suman Mandal, Maximillian Daughtry, Eduardo R. Mucciolo·Jun 17, 2026
Variational quantum algorithms (VQAs) are among the leading approaches for near-term quantum computing, yet their performance can degrade in barren plateau regimes characterized by vanishing gradients. A widely held intuition is that increasing circu...
Towards Entanglement-Enhanced Atom Interferometry Using Bow-Tie Cavities
Christian Mancini, Marco Malitesta, Tommaso Mariani +7 more·Jun 17, 2026
Atom interferometers are among the most sensitive instruments for precision measurements and tests of fundamental physics. Their performance, however, is ultimately limited by quantum projection noise when uncorrelated atomic ensembles are employed. ...
Ground- and excited-state energies extraction via Trotterization on IBM quantum computers
Fernando Espinoza-Ortiz, Chungwei Lin, Chih-Chun Chien·Jun 16, 2026
We implement the Hadamard test with Trotterized time-evolution operators on IBM quantum computers to simultaneously extract ground- and excited-state energies of the transverse field Ising model (TFIM) and transverse longitudinal field Ising model (T...
Tunable Chaos in the Finite Mean SYK Model
Arkaprava Mukherjee, Sumilan Banerjee, Sandip P. Trivedi +1 more·Jun 16, 2026
The complex Sachdev-Ye-Kitaev (SYK) model, featuring fermions with all-to-all interactions, serves as a dual paradigm for understanding non-Fermi liquid behavior and the holographic nature of charged black holes. Two defining characteristics of the s...
Piezoelectric resonators in thin-film barium titanate from room temperature to millikelvin
Hao Tian, Shu-Yuan Chang, Nuha Akhtar +2 more·Jun 16, 2026
Ferroelectric materials, with their strong nonlinearities, underpin key technologies across radio-frequency (RF) signal processing, optical communications, and emerging quantum systems. Barium titanate (BTO) is a notable example, combining strong pie...
Exponentially many initializations to avoid barren plateaus
Ankit Kulshrestha, Ricard Puig, Diego García-Martín +4 more·Jun 16, 2026
Barren plateaus are stated as an average-case phenomenon: pick an ansatz, initialize it naively, and concentration follows. This has led to the common view that a potential cure for barren plateaus is simply to initialize the parameters more carefull...
Towards an Optimally Distributed Quantum Fourier Transform Circuit
Zachary Vernec, Michael Silver, Hans-Arno Jacobsen·Jun 16, 2026
A promising avenue for scaling quantum computing is to connect quantum processing units (QPUs) by generating entanglement between them. This requires circuit partitioning: partially rewriting quantum circuits to run on a distributed quantum system us...
Exact propagating Dirac wave packets in an attractive Coulomb-like potential
Siddhant Das·Jun 16, 2026
We construct exact, positive-energy, normalizable wave-packet solutions of the Dirac equation in the axisymmetric potential $V=-\,v_0/ρ$ -- to our knowledge, the first such solutions in any external potential. Remarkably, one family comprises only el...
Noncyclic geometric phase in three-level Ramsey interferometry for enhanced metrology
Zhifan Zhou, Yaxin Li·Jun 16, 2026
In a standard two-level Ramsey interferometer, the accumulated signal phase is linearly mapped to the readout phase. Here, we introduce three-level Ramsey interferometry, in which projected interference between internal paths reshapes this mapping th...
Quantum algorithm for Valiant-Vazirani reduction
Patrick Kelly, Victoria S. Ordonez, Michael R. Geller +1 more·Jun 16, 2026
There is growing interest in extensions of the standard model of gate-based quantum computation to include auxiliary degrees of freedom evolving according to a nonlinear Schrödinger equation. By reducing the Boolean satisfiability problem SAT to quan...
Gatekeepers and Hallucinations: A Layered Evaluation Framework for LLM-Driven Quantum Circuit Generation
Christopher Coleman, Sharon Marfatia·Jun 16, 2026
As large language models (LLMs) become embedded in quantum simulation workflows (IDE copilots, notebook assistants, agentic pipelines), evaluation must move beyond functional correctness to anticipate and catch structured failures before they propaga...
Entanglement response to Temperature in Interacting Two-Qubit Thermal States
Zain H. Saleem, Iram Saleem·Jun 16, 2026
We investigate the response of entanglement to temperature variations in interacting two-qubit thermal states. For a general two-qubit interaction Hamiltonian, we derive exact expressions for the thermal concurrence, its first and second derivatives ...
Characterization of nested Walsh parity-check filters in a single-photon eight-mode register on a cloud photonic processor
Emma Tully, Jonathan Washburn, Megan Simons·Jun 16, 2026
We characterize two nested Walsh parity-check filters implemented on Quandela's Belenos cloud photonic processor in a single-photon eight-mode spatial register. The modes are indexed by the vertices of the cube $Q_3$. The filters realize the classica...
An effective field theory approach to the sign problem in BFSS
Gauri Batra, Henry W. Lin, Haifeng Tang·Jun 16, 2026
The sign problem is a notorious obstacle for classically simulating quantum theories with fermions. We propose an effective field theory method for analyzing the sign problem. At high temperatures, a $d$+1 dimensional field theory reduces to a bosoni...
Universal entanglement probes of topological order and locally-achiral manifolds
Yarden Sheffer·Jun 16, 2026
We consider the problem of identifying a topological order based on bulk entanglement of the ground-state wavefunction. Previous work showed that some universal information can be extracted from multi-entropy measures, a class of multipartite entangl...
Equilibration of generalized subsystems: a quantum-channel approach
Pedro S. Correia, Adalberto D. Varizi, Gabriel Dias Carvalho·Jun 16, 2026
Quantum systems governed by unitary and reversible microscopic dynamics may nevertheless exhibit equilibration, in the sense that some effective description becomes time-independent. Standard equilibration results usually consider two separate situat...
All Reflective Field-widened Unbalanced Interferometer for Quantum Sensing and Communication Applications
Ramy Tannous, Dogan Sinar, Tabitha D. Arulpragasam +1 more·Jun 16, 2026
Interference of time-bin encoded signals over free-space optical channels typically requires stringent mode filtering on receivers due to wavefront distortions from atmospheric turbulence, conventionally addressed with adaptive optics. Passive multim...
Probing weak chaos in $\mathcal N=4$ super Yang-Mills and long-range spin chains
Pawel Caputa, Brian Creed, Rathindra Nath Das +2 more·Jun 16, 2026
We study signatures of quantum chaos in finite-loop truncations of the planar dilatation operator in the $\mathfrak{su}(2)$ sector of $\mathcal N=4$ super Yang-Mills and its $β$-deformation. These truncations define holographically motivated long-ran...
Ghosts versus Unstable Particles in Quantum Field Theory
Luca Buoninfante·Jun 16, 2026
We elucidate the physical nature of ghosts above the multi-particle threshold by contrasting them with unstable particles in quantum field theory. We first consider the asymptotic formulation, where ordinary positive-norm one-particle states can be u...