152 citations · 410 across the 12 of their papers we have counts for
12 papers · 1 filter
Integrating Quantum Processor Device and Control Optimization in a Gradient-based Framework
Xiaotong Ni, Hui-Hai Zhao, Lei Wang +2
In a quantum processor, the device design and external controls together contribute to the quality of the target quantum operations. As we continuously seek better alternative qubi…
Fluxonium: an alternative qubit platform for high-fidelity operations
Feng Bao, Hao Deng, Dawei Ding +25
Superconducting qubits provide a promising path toward building large-scale quantum computers. The simple and robust transmon qubit has been the leading platform, achieving multipl…
Quantum Instruction Set Design for Performance
Cupjin Huang, Tenghui Wang, Feng Wu +10
A quantum instruction set is where quantum hardware and software meet. We develop new characterization and compilation techniques for non-Clifford gates to accurately evaluate diff…
Alibaba Cloud Quantum Development Platform: Surface Code Simulations with Crosstalk
Cupjin Huang, Xiaotong Ni, Fang Zhang +11
We report, in a sequence of notes, our work on the Alibaba Cloud Quantum Development Platform (AC-QDP). AC-QDP provides a set of tools for aiding the development of both quantum co…
Neural Network Decoders for Large-Distance 2D Toric Codes
Xiaotong Ni
We still do not have perfect decoders for topological codes that can satisfy all needs of different experimental setups. Recently, a few neural network based decoders have been stu…
Scalable Neural Network Decoders for Higher Dimensional Quantum Codes
Nikolas P. Breuckmann, Xiaotong Ni
Machine learning has the potential to become an important tool in quantum error correction as it allows the decoder to adapt to the error distribution of a quantum chip. An additio…
Using Recurrent Neural Networks to Optimize Dynamical Decoupling for Quantum Memory
Moritz August, Xiaotong Ni
We utilize machine learning models which are based on recurrent neural networks to optimize dynamical decoupling (DD) sequences. DD is a relatively simple technique for suppressing…
Preparing topologically ordered states by Hamiltonian interpolation
Xiaotong Ni, Fernando Pastawski, Beni Yoshida +1
We study the preparation of topologically ordered states by interpolating between an initial Hamiltonian with a unique product ground state and a Hamiltonian with a topologically d…
A Non-Commuting Stabilizer Formalism
Xiaotong Ni, Oliver Buerschaper, Maarten Van den Nest
We propose a non-commutative extension of the Pauli stabilizer formalism. The aim is to describe a class of many-body quantum states which is richer than the standard Pauli stabili…
Commuting quantum circuits: efficient classical simulations versus hardness results
Xiaotong Ni, Maarten Van den Nest
The study of quantum circuits composed of commuting gates is particularly useful to understand the delicate boundary between quantum and classical computation. Indeed, while being…
Enhanced squeezing with parity kicks
Xiao-Tong Ni, Yu-Xi Liu, L C Kwek +1
Using exponential quadratic operators, we present a general framework for studying the exact dynamics of system-bath interaction in which the Hamiltonian is described by the quadra…
A Unified Quantum NOT Gate
Z. W. Yu, X. T. Ni, L. C. Kwek +1
We study the feasibility of implementing a quantum NOT gate (approximate) when the quantum state lies between two latitudes on the Bloch's sphere and present an analytical formula…