Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Compiling with Reinforcement Learning on a Superconducting Processor
Z. Wang, Qiuhao Chen, Yuxuan Du +16 more·Jun 18, 2024
To effectively implement quantum algorithms on noisy intermediate-scale quantum (NISQ) processors is a central task in modern quantum technology. NISQ processors feature tens to a few hundreds of noisy qubits with limited coherence times and gate ope...
Cluster-projected matrix product state: Framework for engineering exact quantum many-body ground states in one and two dimensions
H. Saito, Chisa Hotta·Jun 18, 2024
We propose a framework to design concurrently a frustration-free quantum many-body Hamiltonian and its numerically exact ground states on a sufficiently large finite-size cluster in one and two dimensions using an elementary matrix product state (MPS...
Realizing string-net condensation: Fibonacci anyon braiding for universal gates and sampling chromatic polynomials
Z. Minev, Khadijeh Najafi, Swarnadeep Majumder +5 more·Jun 18, 2024
The remarkable complexity of a topologically ordered many-body quantum system is encoded in the characteristics of its anyons. Quintessential predictions emanating from this complexity employ the Fibonacci string net condensate (Fib SNC) and its anyo...
A shortcut to an optimal quantum linear system solver
Alexander M. Dalzell·Jun 17, 2024
Given a linear system of equations $A\boldsymbol{x}=\boldsymbol{b}$, quantum linear system solvers (QLSSs) approximately prepare a quantum state $|\boldsymbol{x}\rangle$ for which the amplitudes are proportional to the solution vector $\boldsymbol{x}...
Witnessing network steerability of every bipartite entangled state without inputs
Shubhayan Sarkar·Jun 17, 2024
Quantum steering is an asymmetric form of quantum nonlocality where one can detect whether a measurement on one system can steer or change another distant system. It is well-known that there are quantum states that are entangled but unsteerable in th...
Exploring Gamification in Quantum Computing: The Qubit Factory
Glen Evenbly·Jun 17, 2024
Gamification of quantum theory can provide new inroads into the subject: by allowing users to experience simulated worlds that manifest obvious quantum behaviors they can potentially build intuition for quantum phenomena. The Qubit Factory is an engi...
Attention-Based Deep Reinforcement Learning for Qubit Allocation in Modular Quantum Architectures
Enrico Russo, M. Palesi, Davide Patti +2 more·Jun 17, 2024
Modular, distributed and multi-core architectures are currently considered a promising approach for scalability of quantum computing systems. The integration of multiple Quantum Processing Units necessitates classical and quantum-coherent communicati...
Lecture Notes on Quantum Algorithms in Open Quantum Systems
Matteo Carlesso·Jun 17, 2024
These lecture notes aim to provide a clear and comprehensive introduction to using open quantum system theory for quantum algorithms. The main arguments are Variational Quantum Algorithms, Quantum Error Correction, Dynamical Decoupling and Quantum Er...
QC-Forest: a Classical-Quantum Algorithm to Provably Speedup Retraining of Random Forest
Romina Yalovetzky, Niran Kumar, Changhao Li +1 more·Jun 17, 2024
Random Forest (RF) is a popular tree-ensemble method for supervised learning, prized for its ease of use and flexibility. Online RF models require to account for new training data to maintain model accuracy. This is particularly important in applicat...
Quantum Algorithm for a Stochastic Multicloud Model
K. Ueno, Hiroaki Miura·Jun 17, 2024
Quantum computers have attracted much attention in recent years. This is because the development of the actual quantum machine is accelerating. Research on how to use quantum computers is active in the fields such as quantum chemistry and machine lea...
Efficient particle-conserving brick-wall quantum circuits
Babatunde M. Ayeni·Jun 17, 2024
In variational quantum optimization with particle-conserving quantum circuits, it is often difficult to decide a priori which particle-conserving gates and circuit ansatzes would be most efficient for a given problem. This is important especially for...
Nonunitary Coupled Cluster Enabled by Midcircuit Measurements on Quantum Computers.
Alexandre Fleury, James Brown, Erika Lloyd +2 more·Jun 17, 2024
Many quantum algorithms rely on a quality initial state for optimal performance. Preparing an initial state for specific applications can considerably reduce the cost of probabilistic algorithms such as the well studied quantum phase estimation (QPE)...
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He-Yu Lin, Yibin Guo, Rong-Qiang He +2 more·Jun 17, 2024
The tensor network algorithm, a family of prevalent numerical methods for quantum many-body problems, aptly captures the entanglement properties intrinsic to quantum systems, enabling precise representation of quantum states. However, its computation...
Circuit-Efficient Qubit-Excitation-based Variational Quantum Eigensolver
Zhijie Sun, Jie Liu, Zhenyu Li +1 more·Jun 17, 2024
The wave function Ansatze are crucial in the context of the Variational Quantum Eigensolver (VQE). In the Noisy Intermediate-Scale Quantum era, the design of low-depth wave function Ansatze is of great importance for executing quantum simulations of ...
A Representative Framework for Implementing Quantum Finite Automata on Real Devices
A. Khadieva, Özlem Salehi, A. Yakaryılmaz·Jun 17, 2024
We present a framework for the implementation of quantum finite automata algorithms designed for the language $ MOD_p = \{ a^{i\cdot p } \mid i \geq 0 \}$ on gate-based quantum computers. First, we compile the known theoretical results from the liter...
Optimal low-depth quantum signal-processing phase estimation
Yulong Dong, J. Gross, M. Niu·Jun 17, 2024
Quantum effects like entanglement and coherent amplification can be used to drastically enhance the accuracy of quantum parameter estimation beyond classical limits. However, challenges such as decoherence and time-dependent errors hinder Heisenberg-...
Simon’s Algorithm in the NISQ Cloud
Reece Robertson, Emery Doucet, Ernest Spicer +1 more·Jun 17, 2024
Simon’s algorithm was one of the first to demonstrate a genuine quantum advantage in solving a problem. The algorithm, however, assumes access to fault-tolerant qubits. In our work, we use Simon’s algorithm to benchmark the error rates of devices cur...
Supervised binary classification of small-scale digit images and weighted graphs with a trapped-ion quantum processor
I. Zalivako, A. I. Gircha, E. Kiktenko +14 more·Jun 17, 2024
Here we present the results of benchmarking a quantum processor based on trapped $^{171}$Yb$^{+}$ ions by performing basic quantum machine learning algorithms. Using a quantum-enhanced support vector machine algorithm with up to five qubits we perfor...
Minimal state-preparation times for silicon spin qubits
Christopher K. Long, N. Mayhall, S. Economou +5 more·Jun 16, 2024
Efficient preparation of quantum states on noisy intermediate-scale quantum processors remains a significant challenge to achieve quantum advantage. While gate-based methods have been the traditional approach, pulse-based algorithms offer promising a...
Distinguishing graph states by the properties of their marginals
Lina Vandr'e, Jarn de Jong, F. Hahn +3 more·Jun 14, 2024
Graph states are a class of multipartite entangled quantum states that are ubiquitous in quantum information. We study equivalence relations between graph states under local unitaries (LU) to obtain distinguishing methods both in local and in network...