The quantum lifetime of a future-referential feedback loop: certified index, architecture floor, and thermal bonusA quantum feedback loop that returns information from a forward simulation to an earlier internal time induces a completely positive trace-preserving map on a message register; iterating that map…Eran Kopel·Aug 21, 2026SaveLearn
A sharp norm inequality for entanglement-breaking channelsFor a channel Φ on Md written in the generalised Bloch parameterisation r Ar+c, we prove that entanglement breaking implies \|A\|*2 + d(d-1)2|c|2 (d-1)2, where…Eran Kopel·Aug 21, 2026SaveLearn
Quantum information spreading via higher-order operator correlatorsWe provide a perspective into measuring the quantum information spreading by introducing N-operator correlators. Leveraging the idea from N-point correlation function from cosmology, we formulate a…M Süzen·Aug 21, 2026SaveLearn
Identifiability and Estimation Precision in Quantum Network Tomography with Imperfect Bell-State MeasurementsWe study Quantum Network Tomography (QNT) for end-to-end link-error characterization under imperfect Bell-state measurements (BSMs), where multiplicative coupling between link and measurement…Athira Kalavampara Raghunadhan, Matheus Guedes De Andrade, Don Towsley et al.·Aug 21, 2026SaveLearn
Programmable Doppler real-space pattern formation in cold atomsRed-detuned Doppler cooling decelerates atomic motion toward zero velocity, whereas blue-detuned light produces acceleration that separates a cold cloud into finite-velocity packets. Here we combine…Yijun Tang·Aug 21, 2026SaveLearn
Scalable Quantum Key Distribution via GHZ Entanglement and Qubit ReuseConventional Quantum Key Distribution (QKD) requires the transmission of qubits proportional to or exceeding the length of the key, as protocols such as BB84 transmit more qubits than the final key…Tasdiqul Islam, Rasman Mubtasim Swargo, Engin Arslan et al.·Aug 21, 2026SaveLearn
Measurement and reload costs in direct quantum simulation of nonlinear wavesQuantum processors encode an N-point field in log2(N) qubits, which renders nonlinear wave equations an important application for quantum simulation. Nonlinear evolution, however, requires the field…Ziqing Guo, Viraj Dsouza, Alex Khan et al.·Aug 21, 2026SaveLearn
Increased cyclicity of atomic transitions via coherent interference of decay pathsOptical readout is a fundamental tool in atomic state measurement, yet the fidelity of optical readout is frequently limited by imperfect photon collection. This can be mitigated when readout occurs…Eliza Cornell, Benjamin Pingault, Gergő Thiering et al.·Aug 21, 2026SaveLearn
Prior-Informed Adaptive Shifts for Sequential Minimal Optimization in Variational Quantum EigensolversSequential minimal optimization methods, such as the Rotosolve and the Nakanishi-Fujii-Todo algorithm (NFT), are widely used for Variational Quantum Eigensolvers (VQEs). These methods optimize one…Frederik Stalschus, Samuele Pedrielli, Stefan Kühn et al.·Aug 21, 2026SaveLearn
Scaling vs entanglement in measurement-induced phase transition for non-integrable systemsWe find that the measurement-induced phase transition generated by deterministic global measurements, previously observed in the integrable transverse-field Ising model (TFIM), persists in…Paranjoy Chaki, Protyush Nandi, Subinay Dasgupta et al.·Aug 21, 2026SaveLearn
Emulating non-Markovian system-bath dynamics with parametrically driven cavitiesWe introduce and characterize a scheme for emulating non-Markovian quantum system-bath dynamics using the discrete electromagnetic field modes of a parametrically driven cavity. In this scheme, the…Valentin Boettcher, Félix Pellerin, Philippe St-Jean et al.·Aug 21, 2026SaveLearn
Asymptotic entanglement in circle stabilizer states and states forbidding arbitrary vertex-minorsStabilizer states play a central role in quantum information theory, and understanding their entanglement has motivated a large body of work. A well-studied question in particular is when a…Kenneth Goodenough, Marcelo Sales·Aug 21, 2026SaveLearn
Many-body ergodicity breaking from wavefunction snapshotsModern quantum experiments can probe many-body wavefunctions through projective measurements, providing snapshots of individual many-body configurations. A fundamental question is whether the…Riccardo Andreoni, Devendra Singh Bhakuni, Marcello Dalmonte et al.·Aug 21, 2026SaveLearn
Robust cavity metrology beyond the limits of Pound-Drever-HallPrecise measurement of the resonance frequencies of microwave and optical cavities is a foundational capability across quantum technologies. One of the highest-performance methods currently available…Ibukunoluwa Adisa, Won Chan Lee, Yanqin Huang et al.·Aug 21, 2026SaveLearn
Anomalous Local Heat Capacity and Bipartite EntanglementThe heat capacity of a system quantifies how it energetically responds to changes in temperature at equilibrium. Whilst this quantity is positive and even additive for non-interacting systems,…Jake Xuereb, A. de Oliveira Junior·Aug 21, 2026SaveLearn
Classical versus non-classical photon states for detecting vacuum non-linearityQuantum electrodynamics (QED) predicts that the vacuum should behave as a non-linear medium. For many schemes aimed at verifying this fundamental prediction, the signal consists of one or more…N. Ahmadiniaz, C. Kohlfürst, R. Shaisultanov et al.·Aug 21, 2026SaveLearn
Slepian Bounds on the Success Probability of Virtual DistillationVirtual distillation is a powerful near-term error-mitigation primitive, but it is also a spectral filter: it amplifies the dominant eigenvector component already present in the noisy density matrix.…Masayuki Ohzeki, Sasuke Kimata, Xinwei Lee et al.·Aug 21, 2026SaveLearn
Dissipative framework for subsystem dynamics of noninteracting quantum chainsWhen only local observables of a many-body quantum system are of interest, it is desirable to formulate a reduced description within the Hilbert space of the corresponding subsystem, with the…Michele Coppola, Zala Lenarčič·Aug 21, 2026SaveLearn
Quantum annealing through a first-order phase transition: field theory approachUnlike second-order phase transitions, a first-order transition has a stage, in which a system is trapped in a metastable state. The decay of this state leads to abundant excitations over the ground…Diego Andrés Rivera Orona, Predrag Punoševac, Nikolai A. Sinitsyn·Aug 21, 2026SaveLearn
Hypothesis testing between quantum ensemblesQuantum state ensembles are important in quantum information processing. For example, quantum t-designs model highly entangled states in complex systems, while projected ensembles appear in…Jian Yao, Quntao Zhuang·Aug 21, 2026SaveLearn
Tomographic Limits of the Petz Recovery MapThe Petz recovery map is considered one of the key candidates for the quantum analogue of Bayesian inference and Jeffrey's conditionalization. Since, there seems to be a natural connection…Peter Sidajaya, Clive Cenxin Aw, Mingxuan Liu et al.·Aug 21, 2026SaveLearn
Random quantum circuits, chaos and quantum thermalizationThese notes accompany lectures given in June 2025 at the summer school Fundamental Problems in Statistical Physics XVI. They offer a short introduction to random quantum circuits as simple…J. T. Chalker·Aug 21, 2026SaveLearn
Eavesdropper-Blind Remote State Preparation and Applications to Quantum Public-Key EncryptionRemote state preparation (RSP) is a central primitive in quantum cryptography, enabling classical parties to remotely construct quantum states using only classical communication. As a result, RSP…Kaniuar Bacho, Alexandru Cojocaru·Aug 21, 2026SaveLearn
Probing quantumness of superpositions of Gaussian states via Tsirelson probabilityQuantifying nonclassicality in continuous-variable systems remains a fundamental problem in quantum information science. The Tsirelson probability, central to the Tsirelson precession protocol, is…Yue Zhang·Aug 21, 2026SaveLearn
Fixed-ray escort representations of sandwiched and α--z Rényi divergences on von Neumann algebrasWe represent sandwiched and α-z Rényi divergences as averages of ordinary relative entropy. The α-z Rényi divergence is shown to be an integral over the relative entropy of a canonical family…Tanay Kibe, Pratik Roy·Aug 21, 2026SaveLearn