Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Benchmarking the performance of a high-Q cavity qudit using random unitaries
N. Bornman, Tanay Roy, Joshua A. Job +4 more·Aug 23, 2024
High-coherence cavity resonators are excellent resources for encoding quantum information in higher-dimensional Hilbert spaces, moving beyond traditional qubit-based platforms. A natural strategy is to use the Fock basis to encode information in qudi...
Angstrom-scale ion-beam engineering of ultrathin buried oxides for quantum and neuro-inspired computing
N. Smirnov, E. Krivko, D. Moskaleva +18 more·Aug 19, 2024
Multilayer nanoscale systems incorporating buried ultrathin tunnel oxides, 2D materials, and solid electrolytes are crucial for next-generation logics, memory, quantum and neuro-inspired computing. Still, an ultrathin layer control at angstrom scale ...
One-milligram torsional pendulum toward experiments at the quantum-gravity interface
Sofia Agafonova, Pere Rossello, Manuel Mekonnen +1 more·Aug 18, 2024
Probing the possibility of entanglement generation through gravity offers a path to tackle the question of whether gravitational fields possess a quantum mechanical nature. A potential realization necessitates systems with low-frequency dynamics at a...
Potential Enabling Technologies for 7G Networks: Survey
S. Glisic·Aug 18, 2024
Every new generation of mobile networks brings significant advances in two segments, enhancement of the network parameters within the legacy technologies and introduction of new technologies enabling new paradigms in designing the networks. In the fi...
Fault-tolerant optical interconnects for neutral-atom arrays
Josiah Sinclair, Joshua Ramette, Brandon Grinkemeyer +3 more·Aug 16, 2024
We analyze the use of photonic links to enable large-scale fault-tolerant connectivity of locally error-corrected modules based on neutral atom arrays. Our approach makes use of recent theoretical results showing the robustness of surface codes to bo...
Steady-state entanglement of interacting masses in free space through optimal feedback control
Klemens Winkler, Anton V. Zasedatelev, Benjamin A. Stickler +3 more·Aug 14, 2024
We develop a feedback strategy based on optimal quantum feedback control for Gaussian systems to maximise the likelihood of steady-state entanglement detection between two directly interacting masses. We employ linear quadratic Gaussian (LQG) control...
Hybrid entanglement and error correction in a scalable quantum network node
Xiu-Ying Chang, Pan-Yu Hou, Wen-Gang Zhang +7 more·Aug 14, 2024
Recent breakthroughs have ushered the quantum network into a new era, where quantum information can be stored, transferred, and processed across multiple nodes on a metropolitan scale. A key challenge in this new era is enhancing the capabilities of ...
Post-quantum encryption algorithms of high-degree 3-variable polynomial congruences: BS cryptosystems and BS key generation
N. Daras·Aug 14, 2024
We will construct post-quantum encryption algorithms based on three-variable polynomial Beal-Schur congruence. After giving a proof of Beal's conjecture and citing some applications of it to selected cases where the discrete logarithm and some of its...
Multi-Layered Security System: Integrating Quantum Key Distribution with Classical Cryptography to Enhance Steganographic Security
Arman Sykot, Md Shawmoon Azad, Wahida Rahman Tanha +3 more·Aug 13, 2024
In this paper, we present a novel cryptographic system that integrates Quantum Key Distribution (QKD) with classical encryption techniques to secure steganographic images. Our approach leverages the E91 QKD protocol to generate a shared secret key be...
Generation of hypercubic cluster states in 1-4 dimensions in a simple optical system
Zhifan Zhou, L. Araujo, M. Dimario +6 more·Aug 12, 2024
Entangled graph states can be used for quantum sensing and computing applications. Error correction in measurement-based quantum computing schemes will require the construction of cluster states in at least 3 dimensions. Here we generate 1-, 2-, 3-, ...
A quantum GAN for entanglement detection and image classification
J. Steck, E. Behrman·Aug 9, 2024
Machine learning can be used as a systematic method to non-algorithmically program quantum computers. Quantum machine learning enables us to perform computations without breaking down an algorithm into its gate building blocks, eliminating that diffi...
Modular Architectures and Entanglement Schemes for Error-Corrected Distributed Quantum Computation
Siddhant Singh, Fenglei Gu, Sébastian de Bone +3 more·Aug 5, 2024
Connecting multiple smaller qubit modules by generating high-fidelity entangled states is a promising path for scaling quantum computing hardware. The performance of such a modular quantum computer is highly dependent on the quality and rate of entan...
High Purcell-enhancement in quantum-dot hybrid circular Bragg grating cavities for GHz-clockrate generation of indistinguishable photons
Lucas Rickert, Daniel A. Vajner, Martin von Helversen +8 more·Aug 5, 2024
We present Purcell-enhanced ($F_\mathrm{P}>25$) semiconductor InAs quantum dot decay times of $T_1<30\,$ps, enabled by deterministic hybrid circular Bragg gratings (hCBGs). We investigate the benefits of these short $T_1$ times on the two-photon indi...
Scrambling-induced entanglement suppression in noisy quantum circuits
Lea Haas, Christian Carisch, O. Zilberberg·Aug 5, 2024
Quantum information scrambling is a process happening during thermalization in quantum systems and describes the delocalization of quantum information. It is closely tied to entanglement, a key resource for quantum technologies and an order parameter...
Complete Self-Testing of a System of Remote Superconducting Qubits.
S. Storz, Anatoly Kulikov, J. Schär +6 more·Aug 2, 2024
Self-testing protocols enable the certification of quantum systems in a device-independent manner, i.e., without knowledge of the inner workings of the quantum devices under test. Here, we demonstrate this high standard for characterization routines ...
Multipartite Entanglement for Multi-node Quantum Networks
E. Ainley, A. Agrawal, D. Main +5 more·Jul 31, 2024
Scaling the number of entangled nodes in a quantum network is a challenge with significant implications for quantum computing, clock synchronisation, secure communications, and quantum sensing. In a quantum network, photons interact with matter qubit...
Q-Gen: A Parameterized Quantum Circuit Generator
Yikai Mao, Shaswot Shresthamali, Masaaki Kondo·Jul 26, 2024
Unlike most classical algorithms that take an input and give the solution directly as an output, quantum algorithms produce a quantum circuit that works as an indirect solution to computationally hard problems. In the full quantum computing workflow,...
Effective core potentials as a pathway to self-interaction error correction: a proof-of-concept study on one-electron systems
D. Lonsdale, L. Goerigk·Jul 24, 2024
In all applications of Density Functional Theory there is always a degree of one-electron self-interaction error (SIE). Here, we propose a simple self-interaction correction by applying an effective core potential (ECP) that replaces no electrons: we...
Route-Forcing: Scalable Quantum Circuit Mapping for Scalable Quantum Computing Architectures
Pau Escofet, Alejandro Gonzalvo, Eduard Alarc'on +2 more·Jul 24, 2024
Quantum computers are expected to scale in size to close the gap that currently exists between quantum algorithms and quantum hardware. To this end, quantum compilation techniques must scale along with the hardware constraints, shifting the current p...
Evaluating Uncertainties in Electricity Markets via Machine Learning and Quantum Computing
Shuyang Zhu, Ziqing Zhu, Linghua Zhu +3 more·Jul 23, 2024
The analysis of decision-making process in electricity markets is crucial for understanding and resolving issues related to market manipulation and reduced social welfare. Traditional Multi-Agent Reinforcement Learning (MARL) method can model decisio...