Quantum simulation of circular cluster interactions in a linear spin chainThe preparation of ground states of Hamiltonians with symmetries that are fundamentally different than those of the underlying device is a central challenge for quantum technologies. Here, we address…Alexander van Lomwel, Hongzheng Zhao, Florian Mintert·Aug 25, 2026SaveLearn
Optimal Quantum Algorithm for Ground-State Energy Estimation with a Guiding StateIn the problem of ground-state energy estimation, one aims to estimate the smallest eigenvalue of a Hamiltonian, often given a guiding state, with some promised overlap γ with the ground space. The…Stacey Jeffery, Freek Witteveen·Aug 25, 2026SaveLearn
Optimal Lower Bound for Ground-State Energy Estimation with a Guiding StateThe guided Hamiltonian problem is the following: given access to the unitary U=ei H for some Hamiltonian H, and given access to a unitary that prepares a guiding state promised to have overlap…Rolando D. Somma, Ronald de Wolf·Aug 25, 2026SaveLearn
Optimal copy complexity of quantum state cloningQuantum state cloning is the task of approximately producing additional copies of an unknown quantum state from a finite number of input copies. The optimal cloning fidelity is known exactly for pure…Sangwoo Jeon, Vaughn Sohn, Changhun Oh·Aug 25, 2026SaveLearn
Tunable-Size Unruh-DeWitt Detector in a Multimode CavityQuantum simulators based on Bose-Einstein condensates (BECs) provide a powerful platform to study relativistic quantum-field phenomena in the lab and in particular emulate relativistic analog…Simon Brunner, Farokh Mivehvar, Helmut Ritsch et al.·Aug 25, 2026SaveLearn
Nearly Optimal Amplitude Estimation at any DepthWe develop a class of amplitude estimation algorithms with tunable circuit depth M and circuit repetitions N, requiring neither ancilla qubits nor controlled Grover operations. For additive error…Jona Erle, Bálint Koczor·Aug 25, 2026SaveLearn
Towards Stirling cooler operable single-photon sources based on low-noise GaAs quantum dotsFor photonic quantum technology applications, sources capable of emitting photons with indistinguishability close to unity are essential. Ideally, these sources should not require demanding cooling…Maximilian Aigner, Jana Schlücking, Eva Schöll et al.·Aug 25, 2026SaveLearn
ABSTRACTS: Amsterdam Benchmark Suite for the Time and Resource Analysis of Clifford+T SimulatorsRecent years have seen a rapid growth in literature presenting new methods for simulating non-Clifford quantum circuits with classical hardware. These methods span a range of approaches, including…Matthew Sutcliffe, John van de Wetering·Aug 25, 2026SaveLearn
Essentially optimal gate teleportationGate teleportation allows us to implement a nonlocal unitary using local operations, classical communication (LOCC), and a shared entangled state. Known deterministic teleportation protocols consume…Lukas Schmitt, David Sutter·Aug 25, 2026SaveLearn
Distributed Resource Theory of Entanglement and MagicIn distributed fault-tolerant quantum computing, entanglement and magic are essential resources for quantum communication and universal fault-tolerant computation, respectively. Although they are…Xiao Yuan, Wenhao Zhang, Qiming Ding et al.·Aug 25, 2026SaveLearn
Three-slit interference with a which-path memory ancilla: A bright-dark state formulationIn this paper, we study the effect of a which-path memory ancilla on the three-slit interference pattern within the framework of the bright--dark state description [Phys. Rev. Lett. 134, 133603…Ajay Kumar, Guruprasad Kadam, Anirban Pathak·Aug 25, 2026SaveLearn
A Theory of Finite-Noise Optima and Generalization in Quantum Machine LearningQuantum noise is expected to degrade quantum machine learning by driving circuits away from their noiseless implementations. Yet recent studies show moderate noise can reduce testing error, a…Ziyu Zhang, Zikang Jia, Xiaosong Li et al.·Aug 25, 2026SaveLearn
A Dynamic-Kernel/QPacket Executable for Quantum Repeater Chains in Q2NS/ns-3The Quantum Internet operates on entanglement, a non-local, non-copyable, stateful network resource, which motivates protocol organization beyond classical layering. We present a first executable…Adam Pearson, Marcello Caleffi, Angela Sara Cacciapuoti·Aug 25, 2026SaveLearn
Efficient Treatment of Non-Linearity in Quantum Computational Fluid Dynamics Using Hybrid Tensor NetworksNonlinear terms present a fundamental challenge for quantum computational fluid dynamics, as their implementation on inherently linear quantum hardware typically requires resource-intensive…Pia Siegl, Nis-Luca van Hülst, Maximilian Mandelt Buxadé et al.·Aug 25, 2026SaveLearn
Quantum Secure Time Transfer for SatellitesWe experimentally demonstrate an entanglement-based Quantum-Secure Time Transfer (QSTT) system in an emulated low Earth orbit satellite-to-ground channel using a type-0 Sagnac-based entangled-photon…Ravi Singh Adhikari, Anju Rani, Aman Gupta et al.·Aug 25, 2026SaveLearn
Lifting connectivity bottlenecks in superconducting quantum processors via enriched native two-qubit gatesLimited qubit connectivity is a central architectural constraint in superconducting quantum processors, whose planar layouts require additional gates to mediate interactions between distant qubits.…Hanyi Wang, Jingzhe Guo, Lijun Sun et al.·Aug 25, 2026SaveLearn
Rank and Range Criteria for Mixed-State Determination from Local MarginalsDetermining whether a mixed quantum state is uniquely determined among all states by its k-body marginals (k-UDA) is a fundamental problem in quantum system certification. We develop a range-based…Xinyu Qiu, Minglong Qin, Caohan Cheng et al.·Aug 25, 2026SaveLearn
Time-Dependent Tunneling in the Thin-Barrier LimitThe usual WKB analysis for quantum tunneling applies when the tunneling action is large, as it is for tall, wide potential barriers. In contrast we analyze tunneling when the action is small, as it…Tanmay Vachaspati, Frank Wilczek, Zara Yu·Aug 25, 2026SaveLearn
Threshold and Parity BosonSampling in the Linear-Mode RegimeBosonSampling is among the most prominent candidates for demonstrating quantum advantage. However, while the hardness of BosonSampling relies on photon-number-resolving detection, many experimentally…Byeongseon Go, Hyunseok Jeong, Changhun Oh·Aug 25, 2026SaveLearn
Improved Quantum Codes with Transversal T GatesIn this work, we study quantum CSS codes with transversal T gates. Here, T gate transversality is meant in the strongest sense; the application of physical T to every physical qubit yields…Adam Wills·Aug 25, 2026SaveLearn
A Clarifying Note on the Position-Momentum Correspondence: Pontryagin Duality, Fourier Transport, and Physical NormalizationThe position--momentum correspondence combines several mathematically distinct identifications that are often conflated. For the additive group ( R,+), every continuous character has the…Samuel B. Soltau·Aug 25, 2026SaveLearn
QML for Quantum Sensing under Measurement-Induced Information LossNitrogen-vacancy (NV) centers in diamond can serve as highly sensitive solid-state quantum sensors for high-sensitivity magnetometry. However, in the noisy intermediate-scale quantum (NISQ) era,…Sounak Bhowmik, Himanshu Thapliyal·Aug 25, 2026SaveLearn
Quantum Algorithms and Hardness for Point-Count Approximation over Finite FieldsWe study the approximation of the number of solutions of Laurent polynomials over finite fields. For a Laurent polynomial \[f(x)=Σj=1sajxuj∈…Yota Maeda, Hiroshi Yano·Aug 25, 2026SaveLearn
Exact Quasiprobability Hierarchy of the Double-Morse Oscillator: From Potential Geometry to Operator OrderingPhase-space and quasiprobability methods now play operational roles in quantum technologies, characterizing localization, non-Gaussianity, nonclassical resources, and coarse-graining. We develop an…Firoz Chogle, Berihu Teklu, Mauro F. Pereira·Aug 25, 2026SaveLearn
Optical quantum cascade laser based on a MIM structureA quantum cascade laser based on a metal-insulator-metal structure is proposed, the heterostructure of which consists of diamond and metal films. The profile of the quantum potential in a…Michael V. Davidovich·Aug 24, 2026SaveLearn