24 citations · 46 across the 9 of their papers we have counts for
10 papers · 1 filter
Simultaneous calibration of rotation and phase errors in a single experiment
Tien D. Nguyen, Hung Q. Nguyen
In weakly anharmonic qubits, coherent control errors take two generic forms -- over/under-rotation and phase errors -- whose suppression normally requires iterated experiments. We…
Coexistence of CHSH Nonlocality and KCBS Contextuality in a Single Quantum State
Khai Nguyen, Duc M. Doan, Hung Q. Nguyen
Contextuality and nonlocality are distinct manifestations at the foundation of quantum mechanics, yet their coexistence within a single quantum state remains subtle. In a hybrid CH…
Variational Quantum Eigensolver: A Comparative Analysis of Classical and Quantum Optimizer Methods
Duc-Truyen Le, Vu-Linh Nguyen, Cong-Ha Nguyen +2
In this study, we investigated the Variational Quantum Eigensolver (VQE) application for the Ising model as a testbed model, in which we thoroughly delved into several optimizers,…
Harnessing graph state resources for robust quantum magnetometry under noise
Phu Trong Nguyen, Trung Kien Le, Hung Q. Nguyen +1
Precise measurement of magnetic fields is essential for various applications, such as fundamental physics, space exploration, and biophysics. Although recent progress in quantum en…
Variational quantum metrology for multiparameter estimation under dephasing noise
Trung Kien Le, Hung Q. Nguyen, Le Bin Ho
We present a hybrid quantum-classical variational scheme to enhance precision in quantum metrology. In the scheme, both the initial state and the measurement basis in the quantum p…
Increased success probability in Hardy's nonlocality: Theory and demonstration
Duc Minh Tran, Van-Duy Nguyen, Le Bin Ho +1
Depending on the way one measures, quantum nonlocality might manifest more visibly. Using basis transformations and interactions on a particle pair, Hardy logically argued that any…
Experimenting quantum phenomena on NISQ computers using high level quantum programming
Duc M. Tran, Duy V. Nguyen, Le Bin Ho +1
We execute the quantum eraser, the Elitzur-Vaidman bomb, and the Hardy's paradox experiment using high-level programming language on a generic, gate-based superconducting quantum p…
Qsun: an open-source platform towards practical quantum machine learning applications
Chuong Nguyen Quoc, Le Bin Ho, Lan Nguyen Tran +1
Currently, quantum hardware is restrained by noises and qubit numbers. Thus, a quantum virtual machine that simulates operations of a quantum computer on classical computers is a v…
tqix: A toolbox for Quantum in X: Quantum measurement, quantum tomography, quantum metrology, and others
Le Bin Ho, Kieu Quang Tuan, Hung Q. Nguyen
We present an open-source computer program written in Python language for quantum measurement and related issues. In our program, quantum states and operators, including quantum ga…
Direct state measurements under state-preparation-and-measurement errors
Kieu Quang Tuan, Hung Q. Nguyen, Le Bin Ho
Direct state measurement (DSM) is a tomography method that allows for retrieving quantum states' wave functions directly. However, a shortcoming of current studies on the DSM is th…