Quantum Computing & Quantum Physics

Research on quantum algorithms, quantum hardware, quantum error correction, and the physics underlying quantum computation.

Sample of the collection (25 of 33 items)

• Comparative assessment of germanium-based spin-qubit modalities: donor, acceptor, gate-defined hole, and gate-defined electron platforms D. -M. Mei et al. High-purity germanium (Ge) has re-emerged as a versatile semiconductor platform for spin-based quantum information processing because it…
• Feedback-based quantum optimization and its classical counterpart: quantum advantage and the power of classical algorithms Tomohiro Hattori et al. Feedback-based quantum optimization is a quantum approach to combinatorial optimization. In this paper, we introduce the classical…
• Invertible Symmetry and Spontaneous Duality Breaking in the Transverse-Field Ising Model José Dupont et al. The self-duality of the transverse-field Ising model is an archetype for dualities that, alongside symmetry and topology, are used as an…
• Random Access Code protocols: Quantum advantage related to intraparticle entanglement-based contextuality Nilaj Saha et al. The quantum enhancement of success probability in the Random Access Code (RAC) protocols remains unexplored from two important…
• Violations of the Leggett-Garg inequality in Hybrid Liouvillian Dynamics: The Nonlinear Role of Detector Efficiency Sourav Paul et al. Violations of the Leggett-Garg inequality (LGI) up to its algebraic bound under non-Hermitian dynamics are well established…
• QuBridge: Layer-wise Fidelity Decomposition in Quantum Computation Pipeline Kisho Sotokawa et al. Running a quantum circuit on current hardware involves a sequence of engineering decisions, each with tunable parameters and distinct…
• Fermion lattices can be simulated by same-size qubit lattices with $\mathcal{O}(1)$ interaction overhead Gregor Aigner et al. Local interactions among electrons underlie many complex properties of correlated materials. While the Jordan-Wigner transformation can…
• Laser-assisted tunneling in a static tungsten diselenide WSe$_2$ barrier Rachid El Aitouni et al. We study the tunneling effect of Dirac fermions in a monolayer WSe$_2$ subjected to a static electrostatic barrier and irradiated by a…
• Digital Annealer-Assisted Accuracy-First Quantum Circuit Transpilation with Integrated QUBO Mapping and Routing Kazuma Watanabe et al. In the Noisy Intermediate-Scale Quantum (NISQ) era, limited qubit counts and high gate error rates directly constrain circuit fidelity,…
• Leggett--Garg Tests in Neural Dynamics: Probing Non-Diffusive Stochastic Structure in Single Neurons Partha Ghose We propose an experimental programme to test Leggett--Garg-type temporal correlations in single-neuron dynamics. The goal is to…
• Quantum teleportation with coherent error in Bell-state measurement Jeonghyeon Shin et al. Quantum teleportation is a fundamental protocol in quantum information science, whose performance is conventionally evaluated under the…
• String Diagrams for Quantum Foundations, Computing and Natural Language Processing Muhammad Hamza Waseem Applied category theory provides powerful mathematical tools for modelling processes and their composition. Symmetric monoidal…
• Thermodynamic value of CHSH-induced side-information channels in a Szilard engine Piotr Ćwikliński We study the thermodynamic value of side-information channels induced by Bell-type correlations through a CHSH prediction task embedded…
• Wavelet Variance Equipartition as a Threshold for World-Model Quality and Quantum Kernel TN-Simulability Chon-Fai Kam et al. While world models learn compact representations of complex environments, they lack a physics-grounded metric to assess the structural…
• Simulation of Non-Hermitian Hamiltonians with Bivariate Quantum Signal Processing Joshua M. Courtney We achieve query-optimal quantum simulations of non-Hermitian Hamiltonians $H_{\mathrm{eff}} = H_R + iH_I$, where $H_R$ is Hermitian and…
• Controllable Quantum Memory Capacity in Quantum Reservoir Networks with Tunable partial-SWAPs Erik L. Connerty et al. In the field of quantum reservoir computing (QRC), many different computational models and architectures have been proposed. From these…
• Optimal Bounds, Barriers, and Extensions for Non-Hermitian Bivariate Quantum Signal Processing Joshua M. Courtney Multivariate quantum signal processing (M-QSP) has recently been shown to be applicable for non-Hermitian Hamiltonian simulation,…
• Computing eigenpairs of quantum many-body systems with Polfed.jl Rok Pintar et al. We present Polfed$.$jl, an open-source Julia package implementing the Polynomially Filtered Exact Diagonalization (POLFED) algorithm for…
• No measurement induced phase transition in the entanglement dynamics of monitored non-interacting one-dimensional fermions in a disordered or quasiperiodic potential Can Yin et al. We show that the entanglement entropy (EE) of one-dimensional (1d) non-interacting fermions with $U(1)$ symmetry in the presence of a…
• A Single-Molecule Spin-Photon Interface Simon Roggors et al. Optical interfaces that connect long-lived spin qubits to photons are a central requirement for quantum networking and distributed…
• Low-rank compression of two-electron reduced density matrices Kemal Atalar et al. Two-body reduced density matrices (2RDMs) encode the essential two-electron physics of electronic states, but their quartic storage cost…
• Expander attention as exchange-correlation Karim K. Alaa El-Din et al. Kohn-Sham density functional theory (DFT) is the workhorse of quantum chemistry, offering an attractive balance between accuracy and…
• Quantum Nonlinear Properties from a Single Measurement Setting Zihao Li et al. Nonlinear properties of quantum states are essential to quantum information and many-body physics, but assessing them experimentally is…
• Giant critical response in a driven-dissipative quantum gas Ross C. Schofield et al. Systems close to a phase transition turn weak perturbations into large responses. At equilibrium, this amplification is closely linked…
• Bulk-Edge Correspondence via Higher Gauge Theory Hisham Sati et al. More profound than bulk topological order of quantum materials is only its unwinding via gapless excitations along boundaries of the…

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