Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Continuous-variable quantum approximate optimization on a programmable photonic quantum processor
Y. Enomoto, K. Anai, K. Udagawa +1 more·Jun 15, 2022
Variational quantum algorithms (VQAs) provide a promising approach to achieving quantum advantage for practical problems on near-term noisy intermediate-scale quantum (NISQ) devices. Thus far, most studies on VQAs have focused on qubit-based systems,...
High-fidelity qutrit entangling gates for superconducting circuits
Noah Goss, A. Morvan, Brett Marinelli +9 more·Jun 15, 2022
Ternary quantum information processing in superconducting devices poses a promising alternative to its more popular binary counterpart through larger, more connected computational spaces and proposed advantages in quantum simulation and error correct...
Quantum computing for transport optimization
C. Bentley, S. Marsh, A. Carvalho +2 more·Jun 15, 2022
We explore the near-term intersection of quantum computing with the transport sector. To support near-term integration, we introduce a framework for assessing the suitability of transport optimization problems for obtaining potential performance enha...
Chiral SQUID-metamaterial waveguide for circuit-QED
Xin Wang, Yahua Lin, Jia-Qi Li +2 more·Jun 14, 2022
Superconducting metamaterials, which are designed and fabricated with structured fundamental circuit elements, have motivated recent developments of exploring unconventional quantum phenomena in circuit quantum electrodynamics (circuit-QEDs). We prop...
A Pattern Matching Based Framework for Quantum Circuit Rewriting
Hui-Juan Jiang, D. Li, Yuxin Deng +1 more·Jun 14, 2022
The realization of quantum algorithms relies on specific quantum compilations according to the underlying quantum processors. However, there are various ways to physically implement qubits and manipulate those qubits in different physical devices. Th...
Comparing the hardness of MAX 2-SAT problem instances for quantum and classical algorithms
Puya Mirkarimi, A. Callison, Lewis Light +2 more·Jun 14, 2022
An algorithm for a particular problem may find some instances of the problem easier and others harder to solve, even for a fixed input size. We numerically analyse the relative hardness of MAX 2-SAT problem instances for various continuous-time quant...
Entanglement perspective on the quantum approximate optimization algorithm
M. Dupont, N. Didier, Mark Hodson +2 more·Jun 14, 2022
Many quantum algorithms seek to output a specific bitstring solving the problem of interest—or a few if the solution is degenerate. It is the case for the quantum approximate optimization algorithm (QAOA) in the limit of large circuit depth, which aim...
An iterative quantum-phase-estimation protocol for near-term quantum hardware
Joseph G. Smith, C. Barnes, D. Arvidsson-Shukur·Jun 13, 2022
Given N tot applications of a unitary operation with an unknown phase θ , a large-scale fault-tolerant quantum system can reduce an estimate’s error scaling from O (cid:2) 1 / √ N tot (cid:3) to O [1 /N tot ]. Owing to the limited resources available...
Physics-Informed Neural Networks for Quantum Control.
A. Norambuena, M. Mattheakis, F. Gonz'alez +1 more·Jun 13, 2022
Quantum control is a ubiquitous research field that has enabled physicists to delve into the dynamics and features of quantum systems, delivering powerful applications for various atomic, optical, mechanical, and solid-state systems. In recent years,...
Constrained quantum optimization for extractive summarization on a trapped-ion quantum computer
Pradeep Niroula, Ruslan Shaydulin, Romina Yalovetzky +4 more·Jun 13, 2022
Realizing the potential of near-term quantum computers to solve industry-relevant constrained-optimization problems is a promising path to quantum advantage. In this work, we consider the extractive summarization constrained-optimization problem and ...
Quantum control methods for robust entanglement of trapped ions
C. Valahu, Iason Apostolatos, S. Weidt +1 more·Jun 13, 2022
A major obstacle in the way of practical quantum computing is achieving scalable and robust high-fidelity entangling gates. To this end, quantum control has become an essential tool, as it can make the entangling interaction resilient to sources of n...
Synthesis of and compilation with time-optimal multi-qubit gates
Pascal Bassler, Matthias Zipper, C. Cedzich +4 more·Jun 13, 2022
We develop a method to synthesize a class of entangling multi-qubit gates for a quantum computing platform with fixed Ising-type interaction with all-to-all connectivity. The only requirement on the flexibility of the interaction is that it can be sw...
Calibrating the Classical Hardness of the Quantum Approximate Optimization Algorithm
M. Dupont, N. Didier, Mark Hodson +2 more·Jun 13, 2022
Trading fidelity for scale enables approximate classical simulators such as matrix product states (MPS) to run quantum circuits beyond exact methods. A control parameter, the so-called bond dimension 𝜒 for MPS, governs the allocated computational res...
A New Approach to Quantum Computing Multi-Qubit Generation and Development of Quantum Computing Platform with Magnetic Resonance Imaging Techniques
Z. Cho, Y. Son, H. Jeong +4 more·Jun 13, 2022
Increased interest in quantum computing has resulted in various proposals for generating quantum bits or qubits. Superconducting qubits of the Josephson junction are the most widely accepted and currently used, while ion-trap and similar molecule-bas...
The learnability of Pauli noise
Senrui Chen, Yunchao Liu, M. Otten +3 more·Jun 13, 2022
Recently, several quantum benchmarking algorithms have been developed to characterize noisy quantum gates on today’s quantum devices. A fundamental issue in benchmarking is that not everything about quantum noise is learnable due to the existence of ...
Distribution of Quantum Circuits Over General Quantum Networks
Ranjani G. Sundaram, Himanshu Gupta, C. Ramakrishnan·Jun 13, 2022
Near-term quantum computers can hold only a small number of qubits. One way to facilitate large-scale quantum computations is through a distributed network of quantum computers. In this work, we consider the problem of distributing quantum programs r...
Characterization of variational quantum algorithms using free fermions
G. Matos, C. Self, Zlatko Papi'c +2 more·Jun 13, 2022
We study variational quantum algorithms from the perspective of free fermions. By deriving the explicit structure of the associated Lie algebras, we show that the Quantum Approximate Optimization Algorithm (QAOA) on a one-dimensional lattice – with a...
Variational Quantum Simulations of Finite-Temperature Dynamical Properties via Thermofield Dynamics
Chee-Kong Lee, Shi-Xin Zhang, Chang-Yu Hsieh +2 more·Jun 11, 2022
The recent advancement of quantum computer hardware offers the potential to simulate quantum many-body systems beyond the capability of its classical counterparts. However, most current works focus on simulating the ground-state properties or pure-sta...
Quantum Go: Designing a Proof-of-Concept on Quantum Computer
Shibashankar Sahu, Biswaranjan Panda, Arnab Chowhan +2 more·Jun 10, 2022
The strategic Go game, known for the tedious mathematical complexities, has been used as a theme in many fiction, movies, and books. Here, we introduce the Go game and provide a new version of quantum Go in which the boxes are initially in a superpos...
Pulse-Level Scheduling of Quantum Circuits for Neutral-Atom Devices
R. Tsai, Henrique Silv'erio, L. Henriet·Jun 10, 2022
We show how a pulse-level implementation of the multi-qubit gates in neutral-atom device architectures allows for the simultaneous execution of singleand multi-qubit gates acting on overlapping sets of qubits, in a mechanism we name absorption. With ...