Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Exploring Hilbert-Space Fragmentation on a Superconducting Processor
Yong-Yi Wang, Yun-Hao Shi, Zheng-Hang Sun +22 more·Mar 14, 2024
Isolated interacting quantum systems generally thermalize, yet there are several examples for the breakdown of ergodicity, such as many-body localization and quantum scars. Recently, ergodicity breaking has been observed in systems subjected to linea...
Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors
L. Enthoven, M. Babaie, F. Sebastiano·Mar 14, 2024
Quantum processors based on color centers in diamond are promising candidates for future large-scale quantum computers thanks to their flexible optical interface, (relatively) high operating temperature, and high-fidelity operation. Similar to other ...
Quantum Fourier Transform Using Dynamic Circuits.
Elisa Bäumer, Vinay Tripathi, A. Seif +2 more·Mar 14, 2024
In dynamic quantum circuits, classical information from midcircuit measurements is fed forward during circuit execution. This emerging capability of quantum computers confers numerous advantages that can enable more efficient and powerful protocols b...
REPQC: Reverse Engineering and Backdooring Hardware Accelerators for Post-quantum Cryptography
S. Pagliarini, Aikata Aikata, Malik Imran +1 more·Mar 14, 2024
Significant research efforts have been dedicated to designing cryptographic algorithms that are quantum-resistant. The motivation is clear: robust quantum computers, once available, will render current cryptographic standards vulnerable. Thus, we nee...
Scalable parity architecture with a shuttling-based spin qubit processor
Florian Ginzel, M. Fellner, Christian Ertler +3 more·Mar 14, 2024
Motivated by the prospect of a two-dimensional square-lattice geometry for semiconductor spin qubits, we explore the realization of the Parity Architecture with quantum dots (QDs). We present sequences of spin shuttling and quantum gates that impleme...
Bridging Quantum Computing and Differential Privacy: Insights into Quantum Computing Privacy
Yusheng Zhao, Hui Zhong, Xinyue Zhang +3 more·Mar 14, 2024
While quantum computing has strong potential in data-driven fields, the privacy issue of sensitive or valuable information involved in the quantum algorithm should be considered. Differential privacy (DP), which is a fundamental privacy tool widely u...
Controlled-joint remote implementation of operators and its possible generalization
Satish Kumar, Nguyen Ba An, Anirban Pathak·Mar 13, 2024
The existing notion of the shared entangled state-assisted remote preparation of unitary operator (equivalently the existing notion of quantum remote control) using local operation and classical communication is generalized to a scenario where under ...
Stabilizer ground states for simulating quantum many-body physics: theory, algorithms, and applications
Jiace Sun, Lixue Cheng, Shi-Xin Zhang·Mar 13, 2024
Stabilizer states, which are also known as the Clifford states, have been commonly utilized in quantum information, quantum error correction, and quantum circuit simulation due to their simple mathematical structure. In this work, we apply stabilizer...
A Short Review on Novel Approaches for Maximum Clique Problem: from Classical algorithms to Graph Neural Networks and Quantum algorithms
Raffaele Marino, L. Buffoni, Bogdan Zavalnij·Mar 13, 2024
This manuscript provides a comprehensive review of the Maximum Clique Problem, a computational problem that involves finding subsets of vertices in a graph that are all pairwise adjacent to each other. The manuscript covers in a simple way classical ...
Efficient and practical Hamiltonian simulation from time-dependent product formulas
J. Bosse, Andrew M. Childs, Charles Derby +3 more·Mar 13, 2024
In this work we propose an approach for implementing time-evolution of a quantum system using product formulas. The quantum algorithms we develop have provably better scaling (in terms of gate complexity and circuit depth) than a naive application of...
Variance Minimisation of the Lipkin-Meshkov-Glick Model on a Quantum Computer
Isaac Hobday, P. Stevenson, J. Benstead·Mar 13, 2024
Quantum computing can potentially provide advantages for specific computational tasks. The simulation of fermionic systems is one such task that lends itself well to quantum computation, with applications in nuclear physics and electronic systems. He...
Partitioned Quantum Subspace Expansion
Tom O'Leary, L. W. Anderson, D. Jaksch +1 more·Mar 13, 2024
We present an iterative generalisation of the quantum subspace expansion algorithm used with a Krylov basis. The iterative construction connects a sequence of subspaces via their lowest energy states. Diagonalising a Hamiltonian in a given Krylov sub...
Impact of Decoherence on Average Correlation
A. M. Silva·Mar 13, 2024
This article presents a comprehensive study of the impact of decoherence on the average correlation for pure quantum states. We explore two primary mechanisms of decoherence: phase damping and amplitude damping, each having distinct effects on quantu...
Optimal adaptation of surface-code decoders to local noise
A. Darmawan·Mar 13, 2024
Information obtained from noise characterization of a quantum device can be used in classical decoding algorithms to improve the performance of quantum error-correcting codes. Focusing on the surface code under local (i.e. single-qubit) noise, we pre...
Solving lattice gauge theories using the quantum Krylov algorithm and qubitization
L. W. Anderson, M. Kiffner, Tom O'Leary +2 more·Mar 13, 2024
Computing vacuum states of lattice gauge theories (LGTs) containing fermionic degrees of freedom can present significant challenges for classical computation using Monte-Carlo methods. Quantum algorithms may offer a pathway towards more scalable comp...
Cabello's nonlocality argument for multisetting high-dimensional systems and its experimental test
Ming Yang, Dongkai Zhang, Lixiang Chen·Mar 12, 2024
Recent advancements have expanded Hardy's nonlocality arguments into multisetting and multidimensional systems to enhance quantum correlations. In comparison with Hardy's nonlocal argument, Cabello's nonlocal argument (CNA) emerges as a superior choi...
Syncopated Dynamical Decoupling for Suppressing Crosstalk in Quantum Circuits
B. Evert, Zoe Gonzalez Izquierdo, James Sud +5 more·Mar 12, 2024
Theoretically understanding and experimentally characterizing and modifying the underlying Hamiltonian of a quantum system is of utmost importance in achieving high-fidelity quantum gates for quantum computing. In this work, we explore the use of dyn...
Simulation of a Diels-Alder reaction on a quantum computer.
I. Liepuoniute, Mario Motta, Thaddeus Pellegrini +4 more·Mar 12, 2024
The simulation of chemical reactions is an anticipated application of quantum computers. Using a Diels-Alder reaction as a test case, in this study we explore the potential applications of quantum algorithms and hardware in investigating chemical rea...
A Provably Secure Framework for Noise-Aware Delegated Quantum Computation and Storage
Sanidhya Gupta, Ankur Raina·Mar 12, 2024
As large-scale quantum computers become a reality, they will likely exist as centralized cloud resources accessible to a broad user base. Securely delegating private quantum computations to untrusted servers is therefore a foundational challenge. Thi...
Hybrid Data Management Architecture for Present Quantum Computing
M. Zajac, U. Störl·Mar 12, 2024
Quantum computers promise polynomial or exponential speed-up in solving certain problems compared to classical computers. However, in practical use, there are currently a number of fundamental technical challenges. One of them concerns the loading of...