Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,188
This Month
0
Today
0
Research Volume
13,371 papers in 12 months (+7% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
The Parameterized Complexity of Quantum Verification
Srinivasan Arunachalam, S. Bravyi, Chinmay Nirkhe +1 more·Feb 16, 2022
We initiate the study of parameterized complexity of $\textsf{QMA}$ problems in terms of the number of non-Clifford gates in the problem description. We show that for the problem of parameterized quantum circuit satisfiability, there exists a classic...
Saturable Purcell filter for circuit quantum electrodynamics
I. Iakoupov, K. Koshino·Feb 15, 2022
We consider a typical circuit QED setup where an artificial atom encodes a qubit and is dispersively coupled to a measurement resonator that in turn is coupled to a transmission line. We show theoretically that by placing another artificial atom in t...
Hardware-Efficient Entangled Measurements for Variational Quantum Algorithms
F. Escudero, D. Fern'andez-Fern'andez, Gabriel Jaumà +2 more·Feb 14, 2022
Variational algorithms have received significant attention in recent years due to their potential to solve practical problems using noisy intermediate-scale quantum (NISQ) devices. A fundamental step of these algorithms is the evaluation of the expec...
Software Architecture for Quantum Computing Systems - A Systematic Review
Arifa Ali Khan, Aakash Ahmad, M. Waseem +4 more·Feb 11, 2022
Quantum computing systems rely on the principles of quantum mechanics to perform a multitude of computationally challenging tasks more efficiently than their classical counterparts. The architecture of software-intensive systems can empower architect...
Co-Design quantum simulation of nanoscale NMR
Manuel G. Algaba, Mario Ponce-Martinez, C. Munuera-Javaloy +7 more·Feb 11, 2022
Quantum computers have the potential to efficiently simulate the dynamics of nanoscale NMR systems. In this work we demonstrate that a noisy intermediate-scale quantum computer can be used to simulate and predict nanoscale NMR resonances. In order to...
Resource Optimisation of Coherently Controlled Quantum Computations with the PBS-Calculus
A. Cl'ement, S. Perdrix·Feb 10, 2022
Coherent control of quantum computations can be used to improve some quantum protocols and algorithms. For instance, the complexity of implementing the permutation of some given unitary transformations can be strictly decreased by allowing coherent c...
Toward Quantum Computing with Molecular Electronics.
Phillip W K Jensen, L. B. Kristensen, C. Lavigne +1 more·Feb 7, 2022
In this study, we explore the use of molecules and molecular electronics for quantum computing. We construct one-qubit gates using one-electron scattering in molecules and two-qubit controlled-phase gates using electron-electron scattering along meta...
Transitions in Entanglement Complexity in Random Circuits
Sarah True, A. Hamma·Feb 5, 2022
Entanglement is the defining characteristic of quantum mechanics. Bipartite entanglement is characterized by the von Neumann entropy. Entanglement is not just described by a number, however; it is also characterized by its level of complexity. The co...
From quantum speed limits to energy-efficient quantum gates
Maxwell Aifer, Sebastian Deffner·Feb 3, 2022
While recent breakthroughs in quantum computing promise the nascence of the quantum information age, quantum states remain delicate to control. Moreover, the required energy budget for large scale quantum applications has only sparely been considered...
Realization of Fast All-Microwave Controlled-Z Gates with a Tunable Coupler
Shaowei Li, D. Fan, M. Gong +29 more·Feb 1, 2022
The development of high-fidelity two-qubit quantum gates is essential for digital quantum computing. Here, we propose and realize an all-microwave parametric controlled-Z (CZ) gates by coupling strength modulation in a superconducting Transmon qubit ...
Pauli Error Propagation-Based Gate Rescheduling for Quantum Circuit Error Mitigation
V. Saravanan, S. Saeed·Jan 31, 2022
Noisy intermediate-scale quantum algorithms, which run on noisy quantum computers, should be carefully designed to boost the output state fidelity. While several compilation approaches have been proposed to minimize circuit errors, they often omit th...
Quantum machine learning with subspace states
Iordanis Kerenidis, A. Prakash·Jan 31, 2022
We introduce a new approach for quantum linear algebra based on quantum subspace states and present three new quantum machine learning algorithms. The first is a quantum determinant sampling algorithm that samples from the distribution $\Pr[S]= det(X...
Harmonic flow-field representations of quantum bits and gates
Vishal P. Patil, Žiga Kos, Jörn Dunkel·Jan 30, 2022
We describe a general procedure for mapping arbitrary n-qubit states to two-dimensional (2D) vector fields. The mappings use complex rational function representations of individual qubits, producing classical vector field configurations that can be i...
Recommender System Expedited Quantum Control Optimization
Priyanka Batra, M. H. Ram, T. S. Mahesh·Jan 29, 2022
Quantum control optimization algorithms are routinely used to generate optimal quantum gates or efficient quantum state transfers. However, there are two main challenges in designing efficient optimization algorithms, namely overcoming the sensitivit...
Nonunitary gate operations by dissipation engineering
Elias Zapusek, A. Javadi, F. Reiter·Jan 28, 2022
Irreversible logic is at odds with unitary quantum evolution. Emulating such operations by classical measurements can result in disturbances and high resource demands. To overcome these limitations, we propose protocols that harness dissipation to re...
Quantum State Preparation with Optimal Circuit Depth: Implementations and Applications.
Xiao-Ming Zhang, Tongyang Li, Xiao Yuan·Jan 27, 2022
Quantum state preparation is an important subroutine for quantum computing. We show that any n-qubit quantum state can be prepared with a Θ(n)-depth circuit using only single- and two-qubit gates, although with a cost of an exponential amount of anci...
Quantum Simulation of Dissipative Collective Effects on Noisy Quantum Computers
M. Cattaneo, M. Rossi, Guillermo Garc'ia-P'erez +2 more·Jan 27, 2022
Dissipative collective effects are ubiquitous in quantum physics, and their relevance ranges from the study of entanglement in biological systems to noise mitigation in quantum computers. Here, we put forward the first fully quantum simulation of dis...
Learning noise via dynamical decoupling of entangled qubits
T. McCourt, C. Neill, Kenny Lee +9 more·Jan 26, 2022
Noise in entangled quantum systems is difficult to characterize due to many-body effects involving multiple degrees of freedom. This noise poses a challenge to quantum computing, where two-qubit gate performance is critical. Here, we develop and appl...
Implementation of quantum compression on IBM quantum computers
Matej Pivoluska, Martin Plesch·Jan 26, 2022
Advances in development of quantum computing processors brought ample opportunities to test the performance of various quantum algorithms with practical implementations. In this paper we report on implementations of quantum compression algorithm that...
Efficiently improving the performance of noisy quantum computers
Samuele Ferracin, A. Hashim, J. Ville +7 more·Jan 25, 2022
Using near-term quantum computers to achieve a quantum advantage requires efficient strategies to improve the performance of the noisy quantum devices presently available. We develop and experimentally validate two efficient error mitigation protocol...