Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Continuously tunable single-photon level nonlinearity with Rydberg state wave-function engineering
Biao Xu, Gen-Sheng Ye, Yue Chang +2 more·Dec 4, 2025
Extending optical nonlinearity into the extremely weak light regime is at the heart of quantum optics, since it enables the efficient generation of photonic entanglement and implementation of photonic quantum logic gate. Here, we demonstrate the capa...
Simulation of a Heterogeneous Quantum Network
Hayden Miller, Caitao Zhan, Michael Bishof +4 more·Dec 3, 2025
Quantum networks are expected to be heterogeneous systems, combining distinct qubit platforms, photon wavelengths, and device timescales to achieve scalable, multiuser connectivity. Building and iterating on such systems is costly and slow, which mot...
A Quantum Gate Architecture via Teleportation and Entanglement
Samuel J. Sheldon, Pieter Kok, Callum W. Duncan·Dec 3, 2025
We present a universal quantum computing architecture which combines the measurement-driven aspect of MBQC with the circuit model's algorithm dependent generation of qubit entanglement. Our architecture, which we call QGATE, is tailored for discrete-...
Second-quantized numerical simulations of tunable entanglement in quantum high harmonic generation
Sebastián de-la-Peña, Heiko Appel, Angel Rubio +1 more·Dec 3, 2025
Quantum high-harmonic generation (HHG) is a prominent and growing field of research with potential capabilities of providing high photon-number entangled states of light. However, there is an open debate regarding the theory level required for correc...
Phase-space open-systems dynamics of second-order nonlinear interactions with pulsed quantum light
Emanuel Hubenschmid, Victor Rueskov Christiansen·Dec 3, 2025
The theoretical description of broadband, multimode quantum pulses undergoing a second-order $χ^{(2)}$-nonlinear interaction can be quite intricate, due to the large dimensionality of the underlying phase space. However, in many cases only a few broa...
Towards Quantum Stochastic Optimization for Energy Systems under Uncertainty: Joint Chance Constraints with Quantum Annealing
David Ribes, Tatiana Gonzalez Grandon·Dec 3, 2025
Uncertainty is fundamental in modern power systems, where renewable generation and fluctuating demand make stochastic optimization indispensable. The chance constrained unit commitment problem (UCP) captures this uncertainty but rapidly becomes compu...
Generating redundantly encoded resource states for photonic quantum computing
Samuel J. Sheldon, Pieter Kok·Dec 2, 2025
Measurement-based quantum computing relies on the generation of large entangled cluster states that act as a universal resource on which logical circuits can be imprinted and executed through local measurements. A number of strategies for constructin...
Structured Clifford+T Circuits for Efficient Generation of Quantum Chaos
Asim Sharma, Avah Banerjee·Dec 2, 2025
We investigate the emergence of quantum chaos and unitary T-design behavior in derandomized Clifford+T circuits using causal cover architectures. Motivated by the need for deterministic constructions that can exhibit chaotic behavior across diverse q...
Tunable polarization-entangled near-infrared photons from orthogonal GaAs nanowires
Elise Bailly-Rioufreyt, Zoya Polshchykova, Grégoire Saerens +10 more·Dec 2, 2025
Quantum entanglement is a fundamental resource for emerging quantum technologies, enabling secure communication and enhanced sensing. For decades, generating polarization entangled states has been mainly achieved using bulk crystals with spontaneous ...
Multi-node quantum key distribution network using existing underground optical fibre infrastructure
Mariella Minder, Andreas Siakolas, Stephanos Yerolatsitis +2 more·Dec 2, 2025
Quantum key distribution (QKD) offers unconditional information security by allowing two distant users to establish a common encryption key resilient to hacking. Resultingly, QKD networks interconnecting critical infrastructure and enabling the secur...
High-harmonic generation from two weakly coupled molecules: a simple tight-binding model
Lina Bielke, Samuel Schöpa, Falk-Erik Wiechmann +2 more·Dec 2, 2025
The generation of high harmonics is a strongly nonlinear effect that allows to probe properties of the target and to study electron dynamics in matter. It has been investigated in many different kinds of targets, including molecular gases, liquids an...
A unified optical platform for non-Gaussian and fault-tolerant Gottesman-Kitaev-Preskill states
Ozlem Erkilic, Aritra Das, Biveen Shajilal +3 more·Dec 2, 2025
Quantum technologies, encompassing communication, computation, and metrology, rely on the generation and control of non-Gaussian states of light. These states enable secure quantum communication, fault-tolerant quantum computation, and precision sens...
Uncertainty Principle and Angular Momentum Generation in Microscopic Fission Models
G. Scamps, A. Guilleux, D. Regnier +1 more·Dec 1, 2025
The generation of angular momentum (intrinsic spin) in fission fragments has recently attracted renewed attention. While several microscopic approaches reproduce the spin distribution qualitatively using projection techniques, the physical origin of ...
Quantum Advantage in Resource Estimation
William A. Simon, Peter J. Love·Dec 1, 2025
Quantum computing promises the ability to compute properties of quantum systems exponentially faster than classical computers. Quantum advantage is achieved when a practical problem is solved more efficiently on a quantum computer than on a classical...
Parametric processes in nonlinear structures with reflections: an asymptotic-field approach
Tadeu Tassis, Salvador Poveda-Hospital, Nicolás Quesada +1 more·Dec 1, 2025
The generation of engineered quantum states of light via nonlinear processes is fundamental for quantum technologies based on photons. Although embedding nonlinear materials within resonant structures allows for the enhancement and tailoring of photo...
Scalable Quantum Reversible BCD Adder Architectures with Enhanced Speed and Reduced Quantum Cost for Next-Generation Computing
Negin Mashayekhi, Mohammad Reza Reshadinezhad, Antonio Rubio +1 more·Dec 1, 2025
The quantum and reversible paradigm merges the principles of quantum mechanics and reversible computation to enable information-preserving processing. It supports next-generation computing architectures that provide improved scalability and enhanced ...
On-chip high-order parametric downconversion in the excitonic Mott insulator Nb$_3$Cl$_8$ for programmable multiphoton entangled states
Dmitry Skachkov, Dirk R. Englund, Michael N. Leuenberger·Dec 1, 2025
Spontaneous parametric downconversion (SPDC) and four-wave mixing in $χ^{(2)}$ and $χ^{(3)}$ media underpin most entangled-photon sources, but direct generation of higher-order entangled multiphoton states by $n$-th order parametric downconversion re...
An introductory review of the theory of continuous-variable quantum key distribution: Fundamentals, protocols, and security
Maron F Anka, John A. Mora Rodríguez, Douglas F. Pinto +3 more·Dec 1, 2025
Continuous-variable quantum key distribution (CV-QKD) has emerged as a promising approach for secure quantum communication, offering advantages such as high key generation rates, compatibility with standard telecommunication infrastructure, and poten...
Quantum state preparation and transfer based on the bound state in the doublon continuum
Xiaojun Zhang, Xiang Guo, Yan Zhang +2 more·Dec 1, 2025
Bound states in the continuum (BICs) have attracted intense interest, yet their many-particle counterparts remain largely unexplored in waveguide quantum electrodynamics. We identify and characterize a bound state embedded in the doublon continuum (B...
From Device to Dynamics: An Iterative Architectural Framework for High-Performance Single-Photon Detection at Room Temperature
Hao Shu·Dec 1, 2025
Photon detection is a cornerstone of quantum technology, traditionally regarded as a static device-level operation constrained by the intrinsic physical properties of single-photon detectors (SPDs). Consequently, high-performance detection has been h...