Locality in Dissipative Ground-State PreparationCan the ground state of a local Hamiltonian be prepared by local dissipation? We address this question for free-fermion Hamiltonians, using a quadratic Lindbladian with linear jump operators for the…Qicheng Tang, Ruhanshi Barad, Xueda Wen·Oct 29, 2026SaveLearn
Left-Handed Transmission Lines for the Dynamical Casimir EffectLeft-handed (LH) superconducting transmission lines, built with series capacitors and shunt inductors instead of the series inductors and shunt capacitors of a conventional right-handed (RH) line,…Valentin E. Salari, Fernando C. Lombardo, Paula I. Villar·Oct 29, 2026SaveLearn
Optimal Diamond Distance Estimation for Unitary ChannelsThe diamond distance between two quantum channels determines the optimal probability of distinguishing them from a single use. We give a quantum algorithm that estimates the diamond distance between…Jinge Bao, Qisheng Wang·Oct 29, 2026SaveLearn
Exceptional Points as Witnesses of Non-Gaussian NoiseEfficient control of quantum devices requires the knowledge of their environmental noise, yet the commonly measured power spectrum does not fully characterize non-Gaussian fluctuations of realistic…Aritra Ghosh, Subhashish Banerjee, M. Bhattacharya·Oct 29, 2026SaveLearn
Optimal detuning and gate time for strongly driven single-qubit gates beyond the rotating-wave approximationSingle-qubit quantum gates are implemented as the time-controlled unitary evolution of a two-level system under harmonic driving. The rotating-wave approximation (RWA) provides closed-form gate…Alejandro D. Bendersky, Sergio S. Gomez, Rodolfo H. Romero·Oct 29, 2026SaveLearn
Probing fluctuations in photon emission statistics of spin injected quantum dots with time dependent electronic excitationElectrically spin-injected ensembles of InGaAs/GaAs quantum dots emit circularly polarized single photons, with the emission helicity determined by the spin polarization of the injected electrons. A…Chiran Wijesundara, Vincent Iglesias-Cardinale, Yuan Lu et al.·Oct 29, 2026SaveLearn
Toric codes all the way down: decoupling translation-invariant topological CSS codes in higher dimensionsTopological Calderbank-Shor-Steane (CSS) codes in more than two spatial dimensions offer features useful for fault-tolerant quantum computation, such as transversal non-Clifford gates and single-shot…Mingxin He, Yifei Wang, Hao Song et al.·Oct 29, 2026SaveLearn
Classical communication over quantum channels: does entanglement help in nature?Can entangling codewords across independent uses of a quantum channel improve the rate of classical communication? An old conjecture states that there is no such entanglement advantage for all…Peixue Wu·Oct 29, 2026SaveLearn
What Can Be Computed with Indefinite Causal Structure?Can quantum computation become more powerful when operations do not need to follow a definite causal order? We study this question in the process matrix formalism of Oreshkov et al. (Nature…Omri Shmueli·Oct 29, 2026SaveLearn
On the Quantum Chromatic Gap IIWe confirm a conjecture of the first author [SODA'26] on a strong form of pseudo-telepathy for Khot's d-to-1 games: for every d≥ 4, every ε>0, and every k∈ N, there is a…Lorenzo Ciardo, Antoine Mottet·Oct 29, 2026SaveLearn
Algebraic strong-to-weak symmetry breaking and partial decodability in the surface codeCoherent noise can give rise to unconventional regimes of quantum information recovery and mixed-state order. We study these phenomena in two settings related by Wegner duality: the…Stephen W. Yan, Yimu Bao, Sagar Vijay·Oct 29, 2026SaveLearn
Grow, Compress, and Perturb: A Hybrid Quantum-Classical Pathway to Scalable Quantum Chemistry on Quantum ComputersWhile Variational Quantum Eigensolver (VQE) variants are among the leading candidates for electronic structure calculations on quantum computers, gradient-based operator selection limits their…Hugo D. Nogueira, Siwar Badreddine, Olivier Adjoua et al.·Oct 29, 2026SaveLearn
Using domain walls to benchmark fast quantum annealsWe consider the distribution of domain walls arising in ground states of frustrated 1-dimensional Ising spin chains with anti-parallel boundary spins. For ideal chains, a sine-squared…Shushmi Chowdhury, Asa Hopkins, Nick Chancellor et al.·Oct 29, 2026SaveLearn
Fast and accurate neural triage decoding of ultra-high-rate quantum LDPC codesQuantum error correction is essential for fault-tolerant quantum computing. High-rate quantum low-density parity-check (qLDPC) codes have emerged as a promising approach to reducing the substantial…Hong-Ye Hu, Zhenlai Wang, Binzhao Luo et al.·Oct 29, 2026SaveLearn
Lattice moments and quantum designsWe show that the ensemble of unimodular Gottesman-Kitaev-Preskill distributions fails to form a rigged quantum 3-design and quantify the replica defect that determines this failure. This is…Jonathan Conrad, Kristian Holm·Oct 29, 2026SaveLearn
Quantum-Walk Inspired Spectral Metrics for Evaluating QAOA MixersQAOA mixers play an important role in enabling exploration of the exponentially large solution space of binary optimization problems. However, the choice of mixer Hamiltonian is typically guided by…Jasjyot Singh Gulati, Tharrmashastha SAPV·Oct 29, 2026SaveLearn
Trajectory sharpening under quantum reference frame transformationsQuantum reference frame (QRF) transformations relate the description of a physical system to different quantum observers, but their connection to concrete experimental phenomena remains largely…Matteo Fadel, Giulia Gubitosi·Oct 29, 2026SaveLearn
Process matrices on generalised theoriesWe extend the process-matrix framework for defining indefinite causal orders to a broad class of generalised physical theories. We give a simple re-axiomatisation of spacetime contexts in terms of…Matt Wilson, James Hefford, Timothée Hoffreumon·Oct 29, 2026SaveLearn
A universal gauge structure in the photon content of light-matter systemsAfter truncating the matter Hilbert space of a single-mode light-matter model, gauge transformations leave the spectrum invariant whereas the ground-state photon number is gauge dependent, hence, its…Arka Dutta, Marcus Kollar·Oct 29, 2026SaveLearn
Structural Bottlenecks in QAOA Mixer Design: Transport and Causal ReachThe choice of mixer is a central design decision in the Quantum Approximate Optimization Algorithm (QAOA), yet different structural limitations of a mixer need not be captured by a single metric. We…Jasjyot Singh Gulati, Tharrmashastha SAPV·Oct 29, 2026SaveLearn
Fault-Tolerant Heisenberg-Limited Quantum Metrology with Bosonic ProbesQuantum sensors have been shown to enable more precise measurements than classical sensors. By using entanglement and coherent evolution, the estimation error can be made to scale better in…Daniel G. Li, Lorcán O Conlon, Yu-Xin Wang et al.·Oct 29, 2026SaveLearn
Quantum Computing through Computational Imaging: Representations, Measurement, and InferenceAn algebraic correspondence between an imaging model and a quantum state does not specify a computational method: input access, measurement and decoding determine what can be returned. This…George Kourousias, Sergio Carrato, Roberto Pugliese et al.·Oct 29, 2026SaveLearn
Rapid mixing for Gibbs samplers for quantum spin systems with all-to-all interactionsUnderstanding when quantum many-body systems rapidly converge to thermal equilibrium is a central problem in quantum statistical mechanics. While spatial locality provides powerful tools for systems…Nicola Bertoni, Giacomo De Palma·Oct 29, 2026SaveLearn
Quantum communication: a discrimination approachWe develop a state discrimination approach to unassisted quantum communication through a noisy quantum channel. Starting from the operational duality between entanglement recovery and state…Hao-Chung Cheng·Oct 29, 2026SaveLearn
Subsystem Spacetime CodeQuantum error-correcting codes provide a powerful framework for analyzing and designing fault-tolerant Clifford circuits. In this work, we construct the subsystem spacetime code and use it to…Esther Xiaozhen Fu, Aranya Chakraborty, Daniel Gottesman·Oct 29, 2026SaveLearn