Papers
Live trends in quantum computing research, updated daily from arXiv.
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Two-Body Kapitza-Dirac Scattering of One-Dimensional Ultracold Atoms
André Becker, Georgios M. Koutentakis, Peter Schmelcher·Dec 17, 2025
Kapitza-Dirac scattering, the diffraction of matter waves from a standing light field, is widely utilized in ultracold gases, but its behavior in the strongly interacting regime is an open question. Here we develop a numerically-exact two-body descri...
Quantum Mpemba effect in Local Gauge Symmetry Restoration
Hao-Yue Qi, Wei Zheng·Dec 17, 2025
Understanding relaxation in isolated quantum many-body systems remains a central challenge. Recently, the quantum Mpemba effect (QME), a counterintuitive relaxation phenomenon, has attracted considerable attention and has been extensively studied in ...
Quantum Dynamics of a Nanorotor Driven by a Magnetic Field
V. N. Binhi·Dec 17, 2025
A molecular rotor mechanism is proposed to explain weak magnetic field effects in biology. Despite being nanoscale (1 nm), this rotor exhibits quantum superposition and interference. Analytical modeling shows its quantum dynamics are highly sensitive...
Sharing quantum indistinguishability with multiple parties
Lemieux Wang, Hanwool Lee, Joonwoo Bae +1 more·Dec 17, 2025
Quantum indistinguishability of non-orthogonal quantum states is a valuable resource in quantum information applications such as cryptography and randomness generation. In this article, we present a sequential state-discrimination scheme that enables...
Composite N-Q-S: Serial/Parallel Instrument Axioms, Bipartite Order-Effect Bounds, and a Monitored Lindblad Limit
Kazuyuki Yoshida·Dec 17, 2025
We develop a composite operational architecture for sequential quantum measurements that (i) gives a tight bipartite order-effect bound with an explicit equality set characterized on the Halmos two-subspace block, (ii) upgrades Doeblin-type minorizat...
Dynamics and steady states of tight-binding chains in presence of isolated defects
Anish Acharya, Luca Giuggioli, Shamik Gupta·Dec 17, 2025
Reduced transport and localization in isolated quantum systems are typically attributed to spatially-extended disorder, but may also emerge from the influence of a few controllable defects. We show here how a single defect profoundly reshapes wave-fu...
Universal Blind Quantum Computation with Recursive Rotation Gates
Mohit Joshi, Manoj Kumar Mishra, S. Karthikeyan·Dec 17, 2025
Blind Quantum Computation lets a limited-capability client delegate its complex computation to a remote server without revealing its data or computation. Several such protocols have been proposed under varied quantum computing models. However, these ...
Exponential convergence dynamics in Grover's search algorithm
Samuel Cogan, Jonathan Raghoonanan, Tim Byrnes·Dec 17, 2025
Grover's search algorithm is the cornerstone of many applications of quantum computing, providing a quadratic speed-up over classical methods. One limitation of the algorithm is that it requires knowledge of the number of solutions to obtain an optim...
Quantum data hiding with two-qubit separable states
Donghoon Ha, Jeong San Kim·Dec 17, 2025
We consider the discrimination of two-party quantum states and provide a quantum data-hiding scheme using two-qubit separable states. We first provide a bound on the optimal local discrimination of two-party quantum states, and establish a sufficient...
Coherent transfer via parametric control of normal-mode splitting in a superconducting multimode resonator
Kai-I Chu, Xiao-Cheng Lu, Hsin Chang +5 more·Dec 17, 2025
Microwave storage and retrieval are essential capabilities for superconducting quantum circuits. Here, we demonstrate an on-chip multimode resonator in which strong parametric modulation induces a large and tunable normal-mode splitting that enables ...
Quantum Batteries in Coherent Ising Machine
Jin-Tian Zhang, Shuang-Quan Ma, Jing-Yi-Ran Jin +1 more·Dec 17, 2025
With intensive studies of quantum thermodynamics, the quantum batteries (QBs) have been proposed to store and transfer energy via quantum effects. Despite many theoretical models, decoherence remains a severe challenge and practical platforms are sti...
Bosonic quantum computing with near-term devices and beyond
Timo Hillmann·Dec 17, 2025
(Abridged.) This thesis investigates scalable fault-tolerant quantum computation through the development of bosonic quantum codes, quantum LDPC codes, and decoding protocols that connect continuous-variable and discrete-variable error correction. We ...
Microscopic model for a spatial multimode generation based on Multi-pump Four Wave Mixing in hot vapours
H. M. Florez·Dec 17, 2025
Multipartite entanglement is an important resource for quantum information processing. It has been shown that it is possible to employ alkali atoms to implement single device multipartite entanglement by using nonlinear processes with spatial modes. ...
Graph-theoretical search for integrable multistate Landau-Zener models
Zixuan Li, Chen Sun·Dec 17, 2025
The search for exactly solvable models is an evergreen topic in theoretical physics. In the context of multistate Landau-Zener models -- $N$-state quantum systems with linearly time-dependent Hamiltonians -- the theory of integrability provides a fra...
Characterizing entanglement shareability and distribution in $N$-partite systems
Hui Li, Ting Gao, Fengli Yan·Dec 17, 2025
Exploring the shareability and distribution of entanglement possesses fundamental significance in quantum information tasks. In this paper, we demonstrate that the square of bipartite entanglement measures $G_q$-concurrence, which is the generalizati...
Enabling Technologies for Scalable Superconducting Quantum Computing
Xanthe Croot, Kasra Nowrouzi, Christopher Spitzer +21 more·Dec 17, 2025
Experiments with superconducting quantum processors have successfully demonstrated the basic functions needed for quantum computation and evidence of utility, albeit without a sizable array of error-corrected qubits. The realization of the full poten...
Trade-off relations and enhancement protocol of quantum battery capacities in multipartite systems
Yiding Wang, Xiaofen Huang, Shao-Ming Fei +1 more·Dec 17, 2025
First, we investigate the trade-off relations of quantum battery capacities in two-qubit system. We find that the sum of subsystem battery capacity is governed by the total system capacity, with this trade-off relation persisting for a class of Hamil...
High efficiency controlled quantum secure direct communication with 4D qudits and Grover search algorithm
Ni-Shi Lu, Ping Zhou·Dec 17, 2025
Currently, the progress of quantum secure direct communication (QSDC) is impeded by a fundamental trade off among control efficiency, security, and scalability. This study proposes an innovative controlled QSDC protocol based on a collaborative unita...
Quantum Machine Learning for Cybersecurity: A Taxonomy and Future Directions
Siva Sai, Ishika Goyal, Shubham Sharma +3 more·Dec 17, 2025
The increasing number of cyber threats and rapidly evolving tactics, as well as the high volume of data in recent years, have caused classical machine learning, rules, and signature-based defence strategies to fail, rendering them unable to keep up. ...
Roadmap: 2D Materials for Quantum Technologies
Qimin Yan, Tongcang Li, Xingyu Gao +29 more·Dec 16, 2025
Two-dimensional (2D) materials have emerged as a versatile and powerful platform for quantum technologies, offering atomic-scale control, strong quantum confinement, and seamless integration into heterogeneous device architectures. Their reduced dime...