Permutation-symmetric quantum trajectoriesWe show how one may perform a stochastic unravelling which respects weak permutation symmetry for general models of N emitters coupled to a common system (e.g. a cavity mode). Our work extends…Elliot W. Lloyd, Aleksandra A. Ziolkowska, Jonathan Keeling·Jul 26, 2026SaveLearn
Architecture-aware Unitary SynthesisWe present a novel architecture-aware transpilation method for exact general unitary gate synthesis on superconducting quantum hardware. Our approach is tightly integrated with the optimized…Frans Perkkola, Arianne Meijer-van de Griend, Jukka K. Nurminen·Jul 26, 2026SaveLearn
Characterizing entanglement dynamics in QED scattering processesWe study entanglement dynamics among helicity degrees of freedom in quantum electrodynamics (QED) scattering processes. For generic initial states, we consider scattering at fixed momentum,…Massimo Blasone, Silvio De Siena, Gaetano Lambiase et al.·Jul 26, 2026SaveLearn
Theory of the Collective Many-body Subradiance in Waveguide Quantum ElectrodynamicsWe present an analytical theory for the most subradiant modes in a finite one-dimensional emitter array coupled to either an ideal or a nonideal waveguide. Using an effective non-Hermitian…Xin Wang, Junjun He, Zeyang Liao·Jul 26, 2026SaveLearn
Quantum-enhanced estimation of signal field amplitudes with critical squeezed states of photonic modesCritical phenomena of quantum systems offer a promising strategy to improve measurement precision. So far, many criticality-enhanced quantum metrological schemes have been proposed by using the…Ken Chen, Jia-Hao Lv, Wen Ning et al.·Jul 26, 2026SaveLearn
Quantum information scrambling in strongly disordered Rydberg spin systemsDespite the fact that power-law interactions occur in a plethora of physical systems, their many-body dynamics is far less understood than that of nearest-neighbor interacting systems. Here, we study…Maximilian Müllenbach, Sebastian Geier, Adrian Braemer et al.·Jul 26, 2026SaveLearn
Super-Heisenberg-limited Sensing via Collective Subradiance in Waveguide Quantum ElectrodynamicsWe explore the quantum-metrological potential of subwavelength-spaced emitter arrays coupled to a one-dimensional nanophotonic waveguide. In this system, strong dipole--dipole interactions profoundly…Xin Wang, Zeyang Liao·Jul 26, 2026SaveLearn
Exploring fixed points and eigenstates of quantum systems with reinforcement learningWe introduce a reinforcement learning algorithm designed to identify the fixed points of a given quantum operation. The method iteratively constructs the unitary transformation that maps the…María Laura Olivera-Atencio, Jesús Casado-Pascual, Denis Lacroix·Jul 26, 2026SaveLearn
Quantum Action-Dependent ChannelsWe study communication over a quantum action-dependent channel, where the transmitter first performs an action that "shocks" the channel environment, and subsequently encodes a message into a…Michael Korenberg, Uzi Pereg·Jul 26, 2026SaveLearn
Sample-optimal single-copy quantum state tomography with shallow-depth measurementsQuantum state tomography (QST) is a central task in quantum information, and its efficiency is commonly characterized by sample complexity. Although collective measurements on multiple copies achieve…Gyungmin Cho, Dohun Kim·Jul 26, 2026SaveLearn
Modulator-Assisted Zeno Control of Energy Transfer in Quantum BatteriesEfficient operation of quantum batteries requires not only fast energy transfer but also the ability to halt the charging process to prevent reverse flow. Existing approaches typically rely on direct…Songbo Xie, Manas Sajjan, Ashok Ajoy et al.·Jul 26, 2026SaveLearn
Beyond mean-field dynamics of the Dicke model with non-Markovian dephasingWe present a density matrix-based time dependent projection operator formalism to calculate the beyond mean-field dynamics of systems with non-Markovian local baths and one-to-all interactions. Such…Anqi Mu, Nathan Ng, Andrew J. Millis et al.·Jul 26, 2026SaveLearn
On the quantum computational complexity of classical linear dynamics with geometrically local interactions: Dequantization and universalityThe simulation of large-scale classical systems in exponentially small space on quantum computers has gained attention. The prior work demonstrated that a quantum algorithm offers an exponential…Kazuki Sakamoto, Keisuke Fujii·Jul 26, 2026SaveLearn
Impact of Amplitude and Phase Damping Noise on Quantum Reinforcement Learning: Challenges and OpportunitiesQuantum machine learning (QML) is an emerging field with significant potential, yet it remains highly susceptible to noise, which poses a major challenge to its practical implementation. While…María Laura Olivera-Atencio, Lucas Lamata, Jesús Casado-Pascual·Jul 26, 2026SaveLearn
Stabilizer Ranks, Barnes Wall Lattices and Magic MonotonesIn 2024, Kliuchnikov and Schönnenbeck showed a connection between the Barnes Wall lattices, stabilizer states and Clifford operations. In this work, we study their results and relate them to the…Amolak Ratan Kalra, Pulkit Sinha·Jul 26, 2026SaveLearn
Quantum Error Source and Channel CodingQuantum error correction draws many of its principles and constructions from classical coding theory, adapted to the unique aspects of quantum mechanics. Here we extend this correspondence to a block…Dennis Lucarelli·Jul 26, 2026SaveLearn
Information-theoretic limits on undetectable parameter-estimation attacks in continuous-variable quantum key distributionWe formalize side-channel detection in Gaussian-modulated continuous-variable quantum key distribution (CV-QKD) as a certificate-forgery hypothesis test and identify its detectability with an…Agung Trisetyarso, Lenny Putri Yulianti, Kridanto Surendro·Jul 25, 2026SaveLearn
Wave-functional formulation of dissipative CSL modelsWe formulate minimal and dissipative Continuous Spontaneous Localization (CSL) dynamics in the functional Schrödinger representation for a non-relativistic bosonic field. In this framework, the…Y. M. P. Gomes·Jul 25, 2026SaveLearn
Gravitational acceleration encoded in Jaynes Cummings exchange frequencies: Quantum Fisher information, readout, and validity conditionsWe derive an effective trapped atom--cavity model in which a constant gravitational acceleration shifts the oscillator equilibrium and changes the local standing-wave coupling, thereby encoding the…Salman Sajad Wani, Mughees Ahmed Khan, Mohammad Haris Khan et al.·Jul 25, 2026SaveLearn
Performance of Krotov, PRONTO and PINN for optimal control of quantum gatesAchieving scalable quantum computing demands high-fidelity operations capable of mitigating population leakage into non-computational states. Physics-Informed Neural Networks (PINNs) have recently…Martín D. Jiménez, Murilo D. Forlevesi, Emanuel F. de Lima et al.·Jul 25, 2026SaveLearn
Nested Integral Generator Theorem: From Operator Tautologies to Families of Exact Integral IdentitiesInserting resolutions of the identity is a standard technique for representing states and operators throughout quantum theory, quantum field theory, and related areas of mathematical physics. This…Ghasem Asadi Cordshooli·Jul 25, 2026SaveLearn
Finite-Time Optomechanical Cooling by Multi-Exceptional-Point BraidingCooling a mechanical mode in finite time is a routing problem: excitation must reach a lossy mode before thermal noise rebuilds the population. Exceptional points are non-Hermitian degeneracies at…Borhan Ahmadi·Jul 25, 2026SaveLearn
Irreducible Architectures of Multipartite EntanglementMultipartite entanglement is commonly characterized by scalar notions such as separability and entanglement depth, which do not resolve the distribution of entangled cluster sizes. For mixed states,…Augusto Smerzi, Manuel Gessner·Jul 25, 2026SaveLearn
Digital techniques for the frustrated Ising ring: the role of counter-diabatic termsWe investigate the role of local counter-diabatic (CD) terms in enhancing the performance of discrete-time digital protocols for a frustrated Ising ring, a system with an exponentially small spectral…Kiran Thengil, Vincenzo Roberto Arezzo, Giuseppe E. Santoro·Jul 25, 2026SaveLearn
The Ruskai-Audenaert conjecture & equipartitions of positive operatorsSeveral open problems in quantum information theory can be formulated as equipartition problems for positive operators, asking for a decomposition into bounded-rank positive parts under uniform…Niranjan Kumar, Michael M. Wolf·Jul 25, 2026SaveLearn