30 citations · 123 across the 22 of their papers we have counts for
24 papers
Nonlinear collective-spin dynamics for quantum-enhanced sensing in solid-state platforms
Le Bin Ho
Collective spin systems in solid-state materials are promising platforms for quantum-enhanced sensing. In systems such as nitrogen-vacancy centers in diamond, donor spins in silico…
Feedback-Based Quantum Control for Safe and Synergistic Drug Combination Design
Mai Nguyen Phuong Nhi, Lan Nguyen Tran, Le Bin Ho
Drug-drug interactions (DDIs) strongly affect the safety and efficacy of combination therapies. Despite the availability of large DDI databases, selecting optimal multi-drug combin…
Detecting and protecting entanglement through nonlocality, variational entanglement witness, and nonlocal measurements
Haruki Matsunaga, Le Bin Ho
We propose an innovative method to enhance the detection and protection of quantum entanglement, a cornerstone of quantum mechanics with applications in computing, communication, a…
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…
No-go result for quantum postselection measurements of rank-m degenerate subspace
Le Bin Ho
We present a no-go result for postselection measurements where the conditional expectation value of a joint system-device observable under postselection is nothing else than the co…
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…
tqix.pis: A toolbox for quantum dynamics simulation of spin ensembles in Dicke basis
Nguyen Tan Viet, Nguyen Thi Chuong, Vu Thi Ngoc Huyen +1
We introduce tqix.pis, a library of tqix, for quantum dynamics simulation of spin ensembles. The library emulates a dynamic process by a quantum circuit, including initializing a q…
Universal compilation for quantum state preparation and tomography
Vu Tuan Hai, Le Bin Ho
Universal compilation is a training process that compiles a trainable unitary into a target unitary and it serves vast potential applications from quantum dynamic simulations to op…
Stochastic approach for quantum metrology with generic Hamiltonians
Le Bin Ho
Recently, variational quantum metrology was proposed for Hamiltonians with multiplicative parameters, wherein the estimation precision can be optimized via variational circuits. Ho…
Quantum backaction effects in sequential measurements
Le Bin Ho
Quantum backaction refers to the disturbance of a quantum system caused by measuring it. In sequential measurements, this effect can accumulate and become significant, leading to n…
Error-disturbance uncertainty relations in Faraday measurements
Le Bin Ho, Keiichi Edamatsu
We examine error-disturbance relations in the quantum measurement of spin systems using an atom-light interface scheme. We model a single spin-1/2 system that interacts with a pola…
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…
Multiparameter quantum estimation under dephasing noise
Le Bin Ho, Hideaki Hakoshima, Yuichiro Matsuzaki +2
Simultaneous quantum estimation of multiple parameters has recently become essential in quantum metrology. Although the ultimate sensitivity of a multiparameter quantum estimation…
Systematic errors in direct state measurements with quantum controlled measurements
Le Bin Ho
Von Neumann measurement framework describes a dynamic interaction between a target system and a probe. In contrast, a quantum controlled measurement framework uses a qubit probe to…
Nuclear Magnetic Resonance model of an entangled sensor under noise
Le Bin Ho, Yuichiro Matsuzaki, Masayuki Matsuzaki +1
Entangled sensors have been attracting a lot of attention recently because they can achieve the sensitivity beyond that of the classical sensors. To exploit entanglement as a resou…
Continuous monitoring measured signals bounded by past and future conditions in enlarged quantum systems
Le Bin Ho
In a quantum system that is bounded by past and future conditions, weak continuous monitoring forward-evolving and backward-evolving quantum states are usually carried out separate…
Multiparameter quantum metrology with postselection measurements
Le Bin Ho, Yasushi Kondo
We analyze simultaneous quantum estimations of multiple parameters with postselection measurements in terms of a tradeoff relation. The system, or a sensor, is characterized by a s…
Improving direct state measurements by using rebits in real enlarged Hilbert spaces
Le Bin Ho
We propose a protocol to improve the accuracy of direct complex state measurements (DSM) by using rebits in real Hilbert spaces. We show that to improve the accuracy, the initial c…
Modular-value-based metrology with spin coherent pointers
Le Bin Ho, Yasushi Kondo
Modular values are quantities that described by pre- and postselected states of quantum systems like weak values but are different from them: The associated interaction is not nece…
Photoenhanced spin/valley polarization and tunneling magnetoresistance in ferromagnetic-normal-ferromagnetic silicene junction
Le Bin Ho, Tran Nguyen Lan
We theoretically demonstrate a simple way to significantly enhance the spin/valley polarizations and tunnel- ing magnetoresistnace (TMR) in a ferromagnetic-normal-ferromagnetic (FN…
An interpretation and understanding of complex modular values
Le Bin Ho, Nobuyuki Imoto
In contrast to that a weak value of an observable is usually divided into real and imaginary parts, here we show that separation into modulus and argument is important for modular…
Self-optimized biological channels in facilitating the transmembrane movement of charged molecules
V. T. N. Huyen, Le Bin Ho, Vu Cong Lap +1
We consider an anisotropically two-dimensional diffusion of a charged molecule (particle) through a large biological channel under an external voltage. The channel is modeled as a…
Full characterization of modular values for two-dimensional systems
Le Bin Ho, Nobuyuki Imoto
Vaidman pointed out the importance of modular values, and related the modular value of a Pauli spin operator to its weak value for specific coupling strengths [Phys. Rev. Lett. 105…