Fast Generation of Metrologically Relevant Fock State MixturesWe propose a fast laser pulse sequence for the generation of non-thermal Fock state mixtures of the motion of a trapped ion, targeted at displacement metrology beyond the standard quantum limit.…Gonzalo Reina Rivero, Marcel Morillas-Rozas, Alberto López-García et al.·Jul 27, 2026SaveLearn
On the two-copy distillability of Werner states and a new partial trace inequalityProblem 5 in Five Open Problems in Quantum Information Theory [PRX Quantum 3, 010101 (2022)], asks whether the two-ququart Werner state (4,-12) is two-copy distillable, where…Thomas C. Fraser, Felix Huber, Balázs Pozsgay et al.·Jul 27, 2026SaveLearn
Quantum-Level Crosstalk Characterization of a 16x16 MEMS Optical Switch for Dynamic Quantum CommunicationsWe present an all-to-all quantum-level crosstalk characterization of a commercial 16x16 MEMS optical switch for multi-user quantum communications using SNSPDs, correlating experimental data with a…Persefoni Konteli, Nikolas Makris, Grigoris Anastasiou et al.·Jul 27, 2026SaveLearn
Coherence as a resource for N-box and quantum pigeonhole paradoxesPre- and post-selection (PPS) paradoxes are striking demonstrations of quantum nonclassicality. Logical PPS paradoxes, where inferences made with the Aharonov-Bergmann-Lebowitz (ABL) rule are exactly…Som Kanjilal, Rafael Wagner, Ernesto F. Galvão·Jul 27, 2026SaveLearn
Systematic Experiment Tracking in Quantum Software: A Case Study of Reservoir Computing with Error MitigationQuantum computers are more widely available than ever, making the field more accessible and widespread. Practitioners are coming from a wide range of domains, conducting experiments and research…Otso Kinanen, Valter Uotila, Vlad Stirbu·Jul 27, 2026SaveLearn
MPStab: an hybrid stabilizers tensor-network quantum circuit simulatorThe development of techniques for simulating quantum systems using classical computers is a paramount task for two primary reasons: i) there exist configurations for which classical computers are…Giulio Crognaletti, Mattia Robbiano, Michele Grossi et al.·Jul 27, 2026SaveLearn
Parallelizable Exact Synthesis of Quantum Circuits via Semi-Tensor ProductExact synthesis is a key infrastructure in quantum circuit synthesis and optimization, which provides optimal implementations of small circuit shards and is widely used as a circuit re-synthesis…Chenjian Li, Dingchao Gao, Xiangzhen Zhou et al.·Jul 27, 2026SaveLearn
DC Conductance of X-shaped Majorana Interferometer reveals Non-Abelian Anyon StatisticsWe propose a four-terminal, X-shaped chiral Majorana interferometer with a central floating superconducting island, enabling the direct detection of the non-Abelian statistics of Ising anyons via the…Domenico Giuliano, Andrea Nava, Reinhold Egger et al.·Jul 27, 2026SaveLearn
Local Universality and Structural Certificates for Minimal Fixed-Depth Two-Qutrit Gate DecompositionWe study a dimension-saturating fixed-core ansatz in which four copies of a fixed, non-tunable two-qutrit core K∈ SU(9) are interleaved with five adjustable local layers from $L=SU(3)…Yurui Liu, Ruoting Dou, Peng Xu et al.·Jul 27, 2026SaveLearn
Tree Tensor Network Reservoir Computing: Hierarchical Ensemble with Invariant Phase BoundariesWe propose Tree Tensor Network Reservoir Computing (TTN-RC), a quantum-inspired reservoir computing framework for time-series prediction that uses the hierarchical structure of Tree Tensor Networks…Daiki Sasaki, Chih-Chieh Chen, Tomah Sogabe·Jul 27, 2026SaveLearn
Quantum key distribution over a 2 km free-space channel with a high secure key rateFree-space quantum key distribution (QKD) provides crucial advantages, including mobility and deployment flexibility, for securing next-generation communication networks. However, practical…Kyungdeuk Park, Dongkyu Kim, Dong-Gil Im et al.·Jul 27, 2026SaveLearn
High-order quantum correlations in nonlinear waveguide quantum electrodynamicsQuantum emitters coupled to nonlinear one-dimensional waveguides provide a route for quantum-state engineering by utilizing parametric gain accumulation along with modified waveguide-mediated…I Gusti Ngurah Yudi Handayana, Ya-Tang Yu, C. -Y. Lee et al.·Jul 27, 2026SaveLearn
Simultaneous estimation of relative phase and coherence in astronomical interferometryAstronomical interferometry is a cornerstone technique for high-resolution stellar imaging and observational astrophysics, extracting spatial information from the coherence of light collected by…Yawen Tang, Wei Ye, Lu Qin et al.·Jul 27, 2026SaveLearn
Non-classical photon statistics in frequency-modulated double quantum dot cavity systemsThe quantum dynamics of a double quantum dot two-level system, coupled to a leaking microwave resonator mode, is theoretically investigated. The double quantum dot is driven by applying a continuous…T. Mihaescu, A. Isar, M. A. Macovei·Jul 27, 2026SaveLearn
Variational Quantum Conditional Boltzmann Machines for Time-Series Forecasting: Architectures, Symmetric Hyperparameter Evaluation, and a Nonlinear BenchmarkIn this study, we developed and evaluated four conditional energy-based forecasting architectures: a classical Gaussian-Bernoulli CRBM, a hybrid quantum-classical QCRBM, a full-register QQRBM, and a…Gerhard Hellstern, Danyal Maheshwari, Martin Zaefferer et al.·Jul 27, 2026SaveLearn
Pound-Drever-Hall Feedforward for Trapped-Ion Optical QubitsLaser phase noise is one of the limiting factors that dictate gate fidelities and coherence times in trapped-ion quantum systems. Previous studies have reported that when the Rabi frequency of an ion…Jia-Yang Gao, Jianwei Lee, Morteza Ahmadi et al.·Jul 27, 2026SaveLearn
Scalable Quantum Machine Learning: Trainability, Expressivity and EfficiencyDesigning scalable parameterized quantum circuits for machine learning faces three obstacles: barren plateaus, the absence of guarantees that the learned function class is classically hard, and…Iordanis Kerenidis·Jul 27, 2026SaveLearn
Recoverable Quantum Computation: An Information-Centric Paradigm for Quantum Computing with ErrorsQuantum computing promises transformative advances in computation, communication, sensing, and machine learning. Yet the realization of large-scale fault-tolerant quantum computers remains hindered…Shengwang Du·Jul 27, 2026SaveLearn
DeComp2: Description Complexity aware DecompositionQuantum compilers optimize execution-only proxies such as gate count, depth, and fidelity, treating the compiled circuit as the unit of cost. This conflates two distinct resources, how much the…Aritra Sarkar·Jul 27, 2026SaveLearn
Scaling a CUDA-Q GQE + QSCI pipeline to 40 qubits for EUV photoresist chemistryWe scale a CUDA-Q-native pipeline coupling a generative quantum eigensolver (GQE) to quantum-selected configuration interaction (QSCI) across active spaces of 14 to 44 qubits, applied to the…Karim Elgammal, Marc Maußner·Jul 27, 2026SaveLearn
Non-Hermitian-enhanced quantum sensing in an optical interferometerThe precision of quantum parameter estimation is traditionally constrained by the quantum Cramér-Rao bound, which is based on the Hermitian measurement framework. Recent studies of non-Hermitian…X. J. Huang, Lei Xiao, Bingzi Huo et al.·Jul 27, 2026SaveLearn
Scalable Photon-Mediated Two-Qubit Gates with Spectrally Noisy Quantum EmittersWhen two quantum bits are coupled through a cavity, a two-qubit gate can be realized between them either in the near-resonant regime over a timescale established by the coupling strength of the…Shreekanth S. Yuvarajan, W. A. Coish, David Hucul et al.·Jul 27, 2026SaveLearn
Dynamical Quantum Phase Transitions in a Pseudo-Hermitian Hamiltonian: The Imbalanced-Pairing Kitaev ModelAlthough parity-time (PT)-symmetric Hamiltonians are often associated with real energy spectra, PT symmetry is neither a sufficient nor a necessary condition for a real spectrum. More generally, real…R. Jafari, Alireza Akbari, Shukhrat Mardonov et al.·Jul 27, 2026SaveLearn
Strategies for quantum-enabled Bitcoin minersWe study the impact that two miners equipped with quantum computers purpose-built for quantum Bitcoin mining will have on the 51% attack threshold of the Bitcoin network, given that the miners are…Zach Manson, Barry C. Sanders·Jul 27, 2026SaveLearn
Efficient Unclonable Encryption from Pauli EigenstatesWe give, to our knowledge, the first plain-model, one-time information-theoretically secure, efficient unclonable encryption scheme for one classical bit. Previous work by Bhattacharyya and Culf…Seyoon Ragavan·Jul 27, 2026SaveLearn