Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Experimental quantum state learning with pairs of photons
C. Pria Dobney, Johan Henaff, Allen Kasum +5 more·Jun 15, 2026
Tomography allows one to estimate the density matrix describing the state an ensemble of quantum systems are prepared in (for example, polarization tomography determines the polarization state of a beam of identically prepared photons). In general, i...
Controlled Quantum Metrology with Anisotropic Heisenberg Spin Interactions under Intrinsic Decoherence
S. K. Singh, Jia-Xin Peng, Y-J Zhu +1 more·Jun 15, 2026
We theoretically investigate quantum parameter estimation in a two-qubit anisotropic Heisenberg spin system with Dzyaloshinskii-Moriya (DM) interaction in the presence of intrinsic decoherence described by the Milburn model. Using the Quantum Fisher ...
Analytic Benchmarks for Coherence-to-Entanglement Conversion under Post-Gate Noise in CNOT-Based Protocols
Asad Ali, H. Kuniyil, M. I. Hussain +3 more·Jun 15, 2026
Coherence-to-entanglement conversion transforms single-qubit superposition into a practical two-qubit resource, but noise limits this process in near-term quantum hardware. We derive closed-form benchmarks for a minimal CNOT primitive in which a cohe...
Neural dynamical systems on ferroelectric compute-in-memory for real-time forecasting
Keshava Katti, Adithya Selvakumar, Pratik Chaudhari +1 more·Jun 15, 2026
Neural dynamical systems are expressive temporal predictors that capture continuous-time dynamics through fine-grained state updates. However, this sequential structure maps poorly onto digital hardware optimized for dense matrix operations, a mismat...
Morphology-resolved scrambling in a chaotic quantum billiard
Pranaya Pratik Das·Jun 15, 2026
Chaotic quantum systems can retain spatial memory through scarred eigenstates, but whether these static structures control scrambling remains unclear. This work establishes a morphology-resolved connection between scarred eigenstates and eigenstate-r...
3D Ising criticality with Platonic lattice superconducting qubits
Liyang Sui, Hong-Hao Song, Sainan Huai +13 more·Jun 15, 2026
The three-dimensional (3D) Ising model is a foundational model in statistical physics and critical phenomena, yet its analytical intractability has long impeded the precise determination of universal critical exponents. While high-precision estimates...
Physically Motivated Ansatz for Open Fermionic Systems on Quantum Computer
Yi Liu, Xiaopeng Li, Zhen Liu +1 more·Jun 15, 2026
Determining non-equilibrium steady states (NESS) of open fermionic systems is a fundamental problem akin to finding ground states of closed systems. To address this, variational quantum algorithms can be used to solve the Lindblad master equation, mu...
Quantum Nonlocal Games on Graph Ensembles
Joshua Tucker, Chris Weeks, Peter Drmota +11 more·Jun 15, 2026
Quantum entanglement is one of the most striking discoveries in all of science. This effect allows, for instance, two spatially separated agents to coordinate their actions, without communication, to an extent that is both counter-intuitive, and prov...
Charging Quantum Batteries with Chiral Squeezing
Borhan Ahmadi, André H. A. Malavazi, Janine Splettstoesser +2 more·Jun 15, 2026
We propose a quantum-battery charger based on a driven bosonic Kitaev chain (BKC), where chiral squeezing converts passive input fluctuations into ordered, non-passive battery states. While a coherent input pulse exhibits phase-sensitive chiral trans...
Scalable generation of heralded single photons via active feed-forward switching of a fiber delay line
Xavier Barcons Planas, Helen M. Chrzanowski, Janik Wolters·Jun 15, 2026
Quasi-deterministic single-photon generation is a key requirement for many photonic quantum technologies. Photon sources based on spontaneous parametric down-conversion (SPDC) are widely used for producing high-quality photons; however, the probabili...
Complete entanglement detection using polynomial invariants
Thomas C. Fraser, Vjosa Blakaj, Roberto Rubboli +2 more·Jun 15, 2026
Existing methods for deciding whether a bipartite quantum state is separable or entangled typically fall into one of two categories: they are either complete but require access to an explicit density matrix followed by numerical optimization, or they...
High-dimensional coherence to entanglement transduction under canonical noise
Asad Ali, Aiham M. Rostom, Saif Al-Kuwari +3 more·Jun 15, 2026
We develop an analytical framework for coherence-to-entanglement conversion in bipartite high-dimensional quantum systems, so-called qunits. An arbitrary coherent input qunit is coupled to an incoherent ancilla through a generalized controlled-shift ...
Ultrastrongly coupled open systems and fine grained time
Stefano Marcantoni, Marco Merkli·Jun 15, 2026
We study the dynamics of a d-level quantum system coupled to a bosonic reservoir when the coupling constant is large. It is known that in the limit of infinite coupling strength, the system undergoes an instantaneous nonselective measurement, resulti...
Quantum enhancement and Doppler suppression of Kasevich-Chu atom interferometer with motional squeezing states
Dongyang Yu, Yubin Wang, Fong En Oon +1 more·Jun 15, 2026
Hybridization of internal and external atomic degrees of freedom in a Kasevich-Chu interferometer enables the possibility to enhance the sensitivity significantly even under quantum-standard limit. By introducing motional squeezing state as an input,...
Fuzzy-processing quantum computation
Yan-Xiong Du·Jun 15, 2026
Quantum computation has attracted numerous attentions and develops rapidly in the recent decades. To against the decoherence and the control errors upon the qubits, quantum error corrections are adopted. Such approaches require lots of redundant qubi...
Electronic Band Structure of Silicon Determined via a Variational Adiabatic Eigensolver: Theory and Experiment
Xingrui Liu, Liyang Sui, Tianqi Cai +11 more·Jun 15, 2026
This work addresses the critical challenge of excited-state preparation for semiconductor band structure calculations. We introduce a variational adiabatic eigensolver (VAE) protocol that combines adiabatic evolution with variational optimization to ...
Ultracold atomic lattice systems for simulating topological phases: A review
Bei-Bei Wang, Xiao-Dong Lin, Jinyi Zhang +1 more·Jun 15, 2026
Owing to rapid recent progress, ultracold atomic lattice systems for simulating topological phases are now at a pivotal stage, evolving from established paradigms into increasingly versatile and programmable quantum simulators. In this review, we sur...
What does measuring one qubit reveal about another? $K$-networks as a directed diagnostic for quantum circuits
Kostas Blekos, Paulo Vitor Itaboraí·Jun 15, 2026
Many-qubit circuit states are hard to inspect directly, so they are often summarized by pairwise graph weights. Common pairwise weights report symmetric correlations, while many circuit questions are directed and basis-specific: if qubit $i$ is measu...
Preparation of Fractional Quantum Hall States on Quantum Computers
Hao Wu, Lei-Yi-Nan Liu, Zhao-Xin Pei +4 more·Jun 15, 2026
The realization of fractional quantum Hall (FQH) states, characterized by fractional charge and intrinsic topological order, on quantum computers represents a central challenge at the interface of condensed matter physics and quantum information scie...
Phase controlled spectral topology, dynamic stability and sensitivity in Non-Hermitian Cavity Magnonics
Sachin Singh Bargahi, Rajeev Singh, Biswanath Bhoi·Jun 15, 2026
We theoretically investigate a non-Hermitian cavity-magnon platform in which coherent photonmagnon interactions and reservoir-mediated dissipative coupling interfere through a single externally tunable phase. We show that this interference phase prov...