103 citations · 288 across the 13 of their papers we have counts for
13 papers
Short two-qubit pulse sequences for exchange-only spin qubits in 2D layouts
Jason D. Chadwick, Gian Giacomo Guerreschi, Florian Luthi +9
Exchange-only (EO) spin qubits in quantum dots offer an expansive design landscape for architecting scalable device layouts. The study of two-EO-qubit operations, which involve six…
HamLib: A library of Hamiltonians for benchmarking quantum algorithms and hardware
Nicolas PD Sawaya, Daniel Marti-Dafcik, Yang Ho +13
In order to characterize and benchmark computational hardware, software, and algorithms, it is essential to have many problem instances on-hand. This is no less true for quantum co…
Realization of a quantum neural network using repeat-until-success circuits in a superconducting quantum processor
M. S. Moreira, G. G. Guerreschi, W. Vlothuizen +14
Artificial neural networks are becoming an integral part of digital solutions to complex problems. However, employing neural networks on quantum processors faces challenges related…
A Scalable Microarchitecture for Efficient Instruction-Driven Signal Synthesis and Coherent Qubit Control
Nader Khammassi, Randy W. Morris, Shavindra Premaratne +7
Execution of quantum algorithms requires a quantum computer architecture with a dedicated quantum instruction set that is capable of supporting translation of workloads into actual…
An LLVM-based C++ Compiler Toolchain for Variational Hybrid Quantum-Classical Algorithms and Quantum Accelerators
Pradnya Khalate, Xin-Chuan Wu, Shavindra Premaratne +6
Variational algorithms are a representative class of quantum computing workloads that combine quantum and classical computing. This paper presents an LLVM-based C++ compiler toolch…
Variational preparation of finite-temperature states on a quantum computer
R. Sagastizabal, S. P. Premaratne, B. A. Klaver +13
The preparation of thermal equilibrium states is important for the simulation of condensed-matter and cosmology systems using a quantum computer. We present a method to prepare suc…
Designing high-fidelity multi-qubit gates for semiconductor quantum dots through deep reinforcement learning
Sahar Daraeizadeh, Shavindra P. Premaratne, A. Y. Matsuura
In this paper, we present a machine learning framework to design high-fidelity multi-qubit gates for quantum processors based on quantum dots in silicon, with qubits encoded in the…
Engineering the Cost Function of a Variational Quantum Algorithm for Implementation on Near-Term Devices
Shavindra P. Premaratne, A. Y. Matsuura
Variational hybrid quantum-classical algorithms are some of the most promising workloads for near-term quantum computers without error correction. The aim of these variational algo…
Enhancing a Near-Term Quantum Accelerator's Instruction Set Architecture for Materials Science Applications
Xiang Zou, Shavindra P. Premaratne, M. Adriaan Rol +7
Quantum computers with tens to hundreds of noisy qubits are being developed today. To be useful for real-world applications, we believe that these near-term systems cannot simply b…
Machine-learning based three-qubit gate for realization of a Toffoli gate with cQED-based transmon systems
Sahar Daraeizadeh, Shavindra P. Premaratne, Xiaoyu Song +2
We use machine learning techniques to design a 50 ns three-qubit flux-tunable controlled-controlled-phase gate with fidelity of >99.99% for nearest-neighbor coupled transmons in ci…
Implementation of a generalized CNOT gate between fixed-frequency transmons
Shavindra P. Premaratne, Jen-Hao Yeh, F. C. Wellstood +1
We have embedded two fixed-frequency Al/AlO/Al transmons, with ground-to-excited transition frequencies at 6.0714 GHz and 6.7543 GHz, in a single 3D Al cavity with a…
Hot electron heatsinks for microwave attenuators below 100 mK
Jen-Hao Yeh, Rui Zhang, Shavindra Premaratne +3
We demonstrate improvements to the cooling power of broad bandwidth (10 GHz) microwave attenuators designed for operation at temperatures below 100 mK. By interleaving 9-m thick…
Microwave attenuators for use with quantum devices below 100 mK
Jen-Hao Yeh, Jay LeFebvre, Shavindra Premaratne +2
To reduce the level of thermally generated electrical noise transmitted to superconducting quantum devices operating at 20 mK, we have developed thin-film microwave power attenuato…