Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
High Ground State Overlap via Quantum Embedding Methods
Mihael Eraković, Freek Witteveen, Dylan Harley +7 more·Aug 4, 2024
Quantum computers can accurately compute ground state energies using phase estimation, but this requires a guiding state that has significant overlap with the true ground state. For large molecules and extended materials, it becomes difficult to find...
Understanding Deep Learning via Notions of Rank
Noam Razin·Aug 4, 2024
Despite the extreme popularity of deep learning in science and industry, its formal understanding is limited. This thesis puts forth notions of rank as key for developing a theory of deep learning, focusing on the fundamental aspects of generalizatio...
Quantum Algorithms for the Variational Optimization of Correlated Electronic States with Stochastic Reconfiguration and the Linear Method.
Mario Motta, Kevin J Sung, J. Shee·Aug 3, 2024
Solving the electronic Schrodinger equation for strongly correlated ground states is a long-standing challenge. We present quantum algorithms for the variational optimization of wave functions correlated by products of unitary operators, such as Loca...
On Using The Path Integral Formalism to Interpret Synchronization in Quantum Graph Networks
J. Campbell·Aug 3, 2024
This article explores the application of the path integral formalism in describing synchronization phenomena in entangled networks, cavities, and reservoirs. We discuss the concept of using Lagrangian mechanics for systems undergoing synchronization ...
Investigation on a quantum algorithm for linear differential equations
Xiaojing Dong, Yizhen Peng, Qili Tang +2 more·Aug 3, 2024
Ref.[BCOW17] introduced a pioneering quantum approach (coined BCOW algorithm) for solving linear differential equations with optimal error tolerance. Originally designed for a specific class of diagonalizable linear differential equations, the algori...
Operator space fragmentation in perturbed Floquet-Clifford circuits
Marcell D. Kovács, Christopher J. Turner, Lluis Masanes +1 more·Aug 2, 2024
Floquet quantum circuits are able to realise a wide range of non-equilibrium quantum states, exhibiting quantum chaos, topological order and localisation. In this work, we investigate the stability of operator localisation and emergence of chaos in r...
Gibbs Sampling gives Quantum Advantage at Constant Temperatures with O(1)-Local Hamiltonians
Joel Rajakumar, James D. Watson·Aug 2, 2024
Sampling from Gibbs states -- states corresponding to system in thermal equilibrium -- has recently been shown to be a task for which quantum computers are expected to achieve super-polynomial speed-up compared to classical computers, provided the lo...
Quantum noise modeling through Reinforcement Learning
Simone Bordoni, Andrea Papaluca, Piergiorgio Buttarini +3 more·Aug 2, 2024
In the current era of quantum computing, robust and efficient tools are essential to bridge the gap between simulations and quantum hardware execution. In this work, we introduce a machine learning approach to characterize the noise impacting a quant...
Radiofrequency cascade readout of coupled spin qubits
Jacob F. Chittock-Wood, Ross C. C. Leon, Michael A. Fogarty +12 more·Aug 2, 2024
Silicon spin qubits based on metal-oxide-semiconductor (MOS) technology are compatible with semiconductor manufacturing and offer a route to scalable quantum processing. However, spin readout typically relies on proximal charge sensors, which add arc...
Computing Riemann zeros with light scattering
Sunkyu Yu, Xianji Piao, N. Park·Aug 2, 2024
Finding hidden order within disorder is a common interest in material science, wave physics, and mathematics. The Riemann hypothesis, stating the locations of nontrivial zeros of the Riemann zeta function, tentatively characterizes statistical order ...
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 ...
Error Correction of Transversal cnot Gates for Scalable Surface-Code Computation
K. Sahay, Yingjia Lin, Shilin Huang +2 more·Aug 2, 2024
Recent experimental advances have made it possible to implement logical multiqubit transversal gates on surface codes in a multitude of platforms. A transversal controlled- (t) gate on two surface codes introduces correlated errors across the code bl...
Efficient conversion from fermionic Gaussian states to matrix product states
Tong Liu, Ying-Hai Wu, Hong-Hao Tu +1 more·Aug 2, 2024
Fermionic Gaussian states (FGSs) are eigenstates of quadratic Hamiltonians and widely used in quantum many-body problems. We propose a highly efficient algorithm that converts FGSs to matrix product states (MPSs). It can be formulated for finite-size...
Generalised Circuit Partitioning for Distributed Quantum Computing
Felix Burt, Kuan-Cheng Chen, Kin K. Leung·Aug 2, 2024
Distributed quantum computing (DQC) is a new paradigm aimed at scaling up quantum computing via the interconnection of smaller quantum processing units (QPUs). Shared entanglement allows teleportation of both states and gates between QPUs. This leads...
Validation of an Analysability Model in Hybrid Quantum Software
Ana Díaz-Muñoz, J. A. Cruz-Lemus, Moisés Rodríguez +2 more·Aug 2, 2024
In the context of quantum-classical hybrid computing, evaluating analysability, which is the ease of understanding and modifying software, presents significant challenges due to the complexity and novelty of quantum algorithms. Although advances have...
Certifiably Robust Encoding Schemes
Aman Saxena, Tom Wollschlager, Nicola Franco +2 more·Aug 2, 2024
Quantum machine learning uses principles from quantum mechanics to process data, offering potential advances in speed and performance. However, previous work has shown that these models are susceptible to attacks that manipulate input data or exploit...
Analyzing Quantum Circuit Depth Reduction with Ancilla Qubits in MCX Gates
Ahmad Bennakhi, Paul Franzon, Gregory T. Byrd·Aug 2, 2024
This paper aims to give readers a high-level overview of the different MCX depth reduction techniques that utilize ancilla qubits. We also exhibit a brief analysis of how they would perform under different quantum topological settings. The techniques...
Time-Efficient Logical Operations on Quantum Low-Density Parity Check Codes.
Guo Zhang, Ying Li·Aug 2, 2024
We propose schemes capable of measuring an arbitrary set of commutative logical Pauli operators in time independent of the number of operators. The only condition is commutativity, a fundamental requirement for simultaneous measurements in quantum me...
Long-lived metastable-qubit memory
Xiaoyang Shi, Jasmine Sinanan-Singh, Kyle DeBry +3 more·Aug 2, 2024
Coherent storage of quantum information is crucial to many quantum technologies. Long coherence times have been demonstrated in trapped-ion qubits, typically using the hyperfine levels within the ground state of a single ion. However, recent research...
Optimizing Variational Quantum Circuits Using Metaheuristic Strategies in Reinforcement Learning
Michael Kolle, Daniel Seidl, Maximilian Zorn +3 more·Aug 2, 2024
Quantum Reinforcement Learning (QRL) offers potential advantages over classical Reinforcement Learning, such as compact state space representation and faster convergence in certain scenarios. However, practical benefits require further validation. QR...