Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Simple heuristics for efficient parallel tensor contraction and quantum circuit simulation
R. Schutski, D. Kolmakov, Taras Khakhulin +1 more·Apr 22, 2020
Tensor networks are the main building blocks in a wide variety of computational sciences, ranging from many-body theory and quantum computing to probability and machine learning. Here we propose a parallel algorithm for the contraction of tensor netw...
Approximate approximation on a quantum annealer
I. Sax, Sebastian Feld, Sebastian Zieliński +3 more·Apr 20, 2020
Many problems of industrial interest are NP-complete, and quickly exhaust resources of computational devices with increasing input sizes. Quantum annealers (QA) are physical devices that aim at this class of problems by exploiting quantum mechanical ...
Experimental simulation of the parity-time symmetric dynamics using photonic qubits
Wei-Chao Gao, Chao Zheng, Lu Liu +2 more·Apr 19, 2020
The concept of parity-time (PT) symmetry originates from the framework of quantum mechanics, where if the Hamiltonian operator satisfies the commutation relation with the parity and time operators, it shows all real eigen-energy spectrum. Recently, P...
Effective gaps are not effective: quasipolynomial classical simulation of obstructed stoquastic Hamiltonians
Jacob Bringewatt, Michael Jarret·Apr 18, 2020
All known examples suggesting an exponential separation between classical simulation algorithms and stoquastic adiabatic quantum computing (StoqAQC) exploit symmetries that constrain adiabatic dynamics to effective, symmetric subspaces. The symmetrie...
Resource Efficient Chemistry on Quantum Computers with the Variational Quantum Eigensolver and The Double Unitary Coupled-Cluster Approach.
Mekena Metcalf, Nicholas P. Bauman, K. Kowalski +1 more·Apr 16, 2020
Applications of quantum simulation algorithms to obtain electronic energies of molecules on noisy intermediate-scale quantum (NISQ) devices require careful consideration of resources describing the complex electron correlation effects. In modeling se...
Simulating non-native cubic interactions on noisy quantum machines
Yuan Shi, A. Castelli, X. Wu +8 more·Apr 15, 2020
As a milestone for general-purpose computing machines, we demonstrate that quantum processors can be programmed to efficiently simulate dynamics that are not native to the hardware. Moreover, on noisy devices without error correction, we show that si...
QuASeR: Quantum Accelerated de novo DNA sequence reconstruction
A. Sarkar, Z. Al-Ars, K. Bertels·Apr 10, 2020
In this article, we present QuASeR, a reference-free DNA sequence reconstruction implementation via de novo assembly on both gate-based and quantum annealing platforms. This is the first time this important application in bioinformatics is modeled us...
Predicting human-generated bitstreams using classical and quantum models
Alex Bocharov, M. Freedman, Eshan Kemp +2 more·Apr 9, 2020
A school of thought contends that human decision making exhibits quantum-like logic. While it is not known whether the brain may indeed be driven by actual quantum mechanisms, some researchers suggest that the decision logic is phenomenologically non...
Towards simulation of the dynamics of materials on quantum computers
Lindsay Bassman, Kuang Liu, A. Krishnamoorthy +8 more·Apr 9, 2020
Author(s): Bassman, Lindsay; Liu, Kuang; Krishnamoorthy, Aravind; Linker, Thomas; Geng, Yifan; Shebib, Daniel; Fukushima, Shogo; Shimojo, Fuyuki; Kalia, Rajiv K; Nakano, Aiichiro; Vashishta, Priya | Abstract: A highly anticipated application for quan...
Hartree-Fock on a superconducting qubit quantum computer
F. Arute, K. Arya, R. Babbush +78 more·Apr 8, 2020
Twelve-qubit quantum computing for chemistry Accurate electronic structure calculations are considered one of the most anticipated applications of quantum computing that will revolutionize theoretical chemistry and other related fields. Using the Goo...
Exponentially faster implementations of Select(H) for fermionic Hamiltonians
Kianna Wan·Apr 8, 2020
We present a simple but general framework for constructing quantum circuits that implement the multiply-controlled unitary $\text{Select}(H) \equiv \sum_\ell |\ell\rangle\langle\ell|\otimes H_\ell$, where $H = \sum_\ell H_\ell$ is the Jordan-Wigner t...
Resource-Optimized Fermionic Local-Hamiltonian Simulation on Quantum Computer for Quantum Chemistry
Qingfeng Wang, Ming Li, C. Monroe +1 more·Apr 8, 2020
The ability to simulate a fermionic system on a quantum computer is expected to revolutionize chemical engineering, materials design, nuclear physics, to name a few. Thus, optimizing the simulation circuits is of significance in harnessing the power ...
Classical Optimizers for Noisy Intermediate-Scale Quantum Devices
W. Lavrijsen, Ana Tudor, Juliane Müller +2 more·Apr 6, 2020
We present a collection of optimizers tuned for usage on Noisy Intermediate-Scale Quantum (NISQ) devices. Optimizers have a range of applications in quantum computing, including the Variational Quantum Eigensolver (VQE) and Quantum Approximate Optimi...
Direct estimation of minimum gate fidelity
Yiping Lu, J. Sim, J. Suzuki +2 more·Apr 6, 2020
With the current interest in building quantum computers, there is a strong need for accurate and efficient characterization of the noise in quantum gate implementations. A key measure of the performance of a quantum gate is the minimum gate fidelity,...
Spin wave based tunable switch between superconducting flux qubits
S. Yuan, Chuanpu Liu, Jilei Chen +9 more·Apr 5, 2020
Quantum computing hardware has received world-wide attention and made considerable progress recently. YIG thin film have spin wave (magnon) modes with low dissipation and reliable control for quantum information processing. However, the coherent coup...
Quantum-Assisted Graph Clustering and Quadratic Unconstrained D-ary Optimisation
Sayantani Pramanik, M. Chandra·Apr 3, 2020
Of late, we are witnessing spectacular developments in Quantum Information Processing with the availability of Noisy Intermediate-Scale Quantum devices of different architectures and various software development kits to work on quantum algorithms. Di...
Single-electron control in a foundry-fabricated two-dimensional qubit array
Fabio Ansaloni, A. Chatterjee, H. Bohuslavskyi +4 more·Apr 2, 2020
Silicon spin qubits have achieved high-fidelity one- and two-qubit gates, above error correction thresholds, promising an industrial route to fault-tolerant quantum computation. A significant next step for the development of scalable multi-qubit proc...
A Heuristic Quantum-Classical Algorithm for Modeling Substitutionally Disordered Binary Crystalline Materials
Tanvi P. Gujarati, Tyler Y Takeshita, A. Hintennach +1 more·Apr 2, 2020
Improving the efficiency and accuracy of energy calculations has been of significant and continued interest in the area of materials informatics, a field that applies machine learning techniques to computational materials data. Here, we present a heu...
Implementation of Geometric Quantum Gates on Microwave‐Driven Semiconductor Charge Qubits
Chengxian Zhang, Tao Chen, Xin Wang +1 more·Apr 1, 2020
A semiconductor‐based charge qubit, confined in double quantum dots, can be a platform to implement quantum computing. However, it suffers severely from charge noises. Here, a theoretical framework to implement universal geometric quantum gates in th...
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Ravi Anand, Arpita Maitra, S. Mukhopadhyay·Apr 1, 2020
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