Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Characterizing randomness in parameterized quantum circuits through expressibility and average entanglement
Guilherme Ilário Correr, Ivan Medina, P. C. Azado +2 more·May 3, 2024
While scalable error correction schemes and fault tolerant quantum computing seem not to be universally accessible in the near sight, the efforts of many researchers have been directed to the exploration of the contemporary available quantum hardware...
Multivariate trace estimation using quantum state space linear algebra
L. Yosef, Shashanka Ubaru, L. Horesh +1 more·May 2, 2024
In this paper, we present a quantum algorithm for approximating multivariate traces, i.e. the traces of matrix products. Our research is motivated by the extensive utility of multivariate traces in elucidating spectral characteristics of matrices, as...
Control landscapes for high-fidelity generation of C-NOT and C-PHASE gates with coherent and environmental driving
A. Pechen, V. Petruhanov, O. Morzhin +1 more·May 1, 2024
High-fidelity generation of two-qubit gates is important for quantum computation, since such gates are components of popular universal sets of gates. Here, we consider the problem of high-fidelity generation of two-qubit C-NOT and C-PHASE (with a det...
Finite Key Security of Simplified Trusted Node Networks
Walter O. Krawec, Bing Wang, Ryan J Brown·Apr 26, 2024
Simplified trusted nodes (STNs) are a form of trusted node for quantum key distribution (QKD) networks which do not require running a full QKD stack every instance (i.e., they do not need to run error correction and privacy amplification each session...
Automated quantum circuit generation for computing inverse hash functions
Elena R. Henderson, Jessie M. Henderson, William V. Oxford +1 more·Apr 26, 2024
Several cryptographic systems depend upon the computational difficulty of reversing cryptographic hash functions. Robust hash functions transform inputs to outputs in such a way that the inputs cannot be later retrieved in a reasonable amount of time...
A manufacturable platform for photonic quantum computing
Koen Avishai Dylan Damien Stanley Ben Hugo Geoff Gabrie Alexander Benyamini Black Bonneau Burgos Burridge , Koen Alexander, A. Benyamini +99 more·Apr 26, 2024
Although holding great promise for low noise, ease of operation and networking1, useful photonic quantum computing has been precluded by the need for beyond-state-of-the-art components, manufactured by the millions2, 3, 4, 5–6. Here we introduce a ma...
Compiler for Distributed Quantum Computing: A Reinforcement Learning Approach
Panagiotis Promponas, Akrit Mudvari, Luca Della Chiesa +3 more·Apr 25, 2024
The practical realization of quantum programs that require large-scale qubit systems is hindered by current technological limitations. Distributed Quantum Computing (DQC) presents a viable path to scalability by interconnecting multiple Quantum Proce...
Optimal entanglement generation in optomechanical systems via Krotov control of covariance matrix dynamics
Pengju Chen, Da-Wei Luo, Ting Yu·Apr 24, 2024
We investigate the optimal control of a continuous variable system, focusing on entanglement generation in an optomechanical system without utilizing Fock basis cutoffs. Using the Krotov algorithm to optimize the dynamics of the covariance matrix, we...
Efficient molecular conformation generation with quantum-inspired algorithm
Yunting Li, Xiaopeng Cui, Zhaoping Xiong +7 more·Apr 22, 2024
Conformation generation, also known as molecular unfolding (MU), is a crucial step in structure-based drug design, remaining a challenging combinatorial optimization problem. Quantum annealing (QA) has shown great potential for solving certain combin...
Two remote counting events induced by a single photon
Lida Zhang·Apr 21, 2024
Motivated by Einstein's thought experiment that a single quantum particle diffracted after a pinhole could in principle produce an action in two or several places on a hemispherical imaging screen, here we explore theoretically the possibility to sim...
Optimized mechanical quadrature squeezing beyond the 3-dB limit via a gradient-descent algorithm
Yu-Hong Liu, Jie-Qiao Liao·Apr 21, 2024
The preparation of mechanical quadrature-squeezed states holds significant importance in cavity optomechanics because the squeezed states have extensive applications in understanding fundamental quantum mechanics and exploiting modern quantum technol...
Quantum optimal control theory for the shaping of flying qubits
Xue Dong, Xi Cao, Wen-Long Li +3 more·Apr 15, 2024
The control of flying qubits carried by itinerant photons is ubiquitous in quantum networks. Beside their logical states, the shape of flying qubits must also be tailored for high-efficiency information transmission. In this paper, we introduce quant...
QDsim: A user-friendly toolbox for simulating large-scale quantum dot devices
Valentina Gualtieri, Charles Renshaw-Whitman, Vinicius Hernandes +1 more·Apr 3, 2024
We introduce QDsim, a Python package tailored for the rapid generation of charge stability diagrams in large-scale quantum dot devices, extending beyond traditional double or triple dots. QDsim is founded on the constant interaction model from which ...
Gate generation for open quantum systems via a monotonic algorithm with time optimization
Paulo Sergio Pereira da Silva, Pierre Rouchon·Mar 29, 2024
We present a monotonic numerical algorithm including time optimization for generating quantum gates for open systems. Such systems are assumed to be governed by Lindblad master equations for the density operators on a large Hilbert-space whereas the ...
Efficient generation of multi-partite entanglement between non-local superconducting qubits using classical feedback
A. Hashim, Ming Yuan, P. Gokhale +8 more·Mar 27, 2024
Quantum entanglement is one of the primary features which distinguish quantum computers from classical computers. In gate-based quantum computing, the creation of entangled states or the distribution of entanglement across a quantum processor often r...
Modelling the Impact of Quantum Circuit Imperfections on Networks and Computer Applications
S. Glisic·Mar 27, 2024
Post Quantum and Quantum Cryptography schemes are feasible quantum computer applications for 7G networks. These schemes could possibly replace existing schemes. These algorithms have been compromised by advances in quantum search algorithms run on qu...
Quantum Optimization for the Future Energy Grid: Summary and Quantum Utility Prospects
Jonas Blenninger, David Bucher, G. Cortiana +6 more·Mar 26, 2024
In this project summary paper, we summarize the key results and use-cases explored in the German Federal Ministry of Education and Research (BMBF) funded project"Q-GRID"which aims to assess potential quantum utility optimization applications in the e...
Generation of Genuine Multipartite Entangled States via Indistinguishability of Identical Particles
Kobra Mahdavipour, Farzam Nosrati, S. Sciara +2 more·Mar 25, 2024
Indistinguishability of identical particles is a resource for quantum information processing and has been utilized to generate entanglement from independent particles that spatially overlap only at the detection stage. Here, we introduce a controllab...
Rate-fidelity tradeoff in cavity-based remote entanglement generation
Kazufumi Tanji, Hiroki Takahashi, W. Roga +1 more·Mar 22, 2024
The qubit scalability imposes a paramount challenge in the field of quantum computing. Photonic interconnects between distinct quantum computing modules provide a solution to deal with this issue. The fundamental part of this approach is entanglement...
Fusion of deterministically generated photonic graph states
P. Thomas, L. Ruscio, O. Morin +1 more·Mar 18, 2024
Entanglement has evolved from an enigmatic concept of quantum physics to a key ingredient of quantum technology. It explains correlations between measurement outcomes that contradict classical physics and has been widely explored with small sets of i...