80 citations · 636 across the 44 of their papers we have counts for
6 papers · 1 filter
Infrared study of carrier scattering mechanism in ion-gated graphene
Kwangnam Yu, Jiwon Jeon, Jiho Kim +5
We performed infrared transmission experiment on ion-gel gated graphene and measured carrier scattering rate g as function of carrier density n over wide range up to n=2E13 cm-2. T…
Optimal Distributed quantum sensing using Gaussian states
Changhun Oh, Changhyoup Lee, Seok Hyung Lie +1
We find and investigate the optimal scheme of quantum distributed Gaussian sensing for estimation of the average of independent phase shifts. We show that the ultimate sensitivity…
Using states with a large photon number variance to increase quantum Fisher information in single-mode phase estimation
Changhyoup Lee, Changhun Oh, Hyunseok Jeong +2
When estimating the phase of a single mode, the quantum Fisher information for a pure probe state is proportional to the photon number variance of the probe state. In this work, we…
Efficient Bayesian credible-region certification for quantum-state tomography
C. Oh, Y. S. Teo, H. Jeong
Standard Bayesian credible-region theory for constructing an error region on the unique estimator of an unknown state in general quantum-state tomography to calculate its size and…
Probing Bayesian credible regions intrinsically: a feasible error certification for physical systems
C. Oh, Y. S. Teo, H. Jeong
Computing size and credibility of Bayesian credible regions for certifying the reliability of any point estimator of an unknown parameter (such as a quantum state, channel, phase,…
Optimal measurements for quantum fidelity between Gaussian states and its relevance to quantum metrology
Changhun Oh, Changhyoup Lee, Leonardo Banchi +3
Quantum fidelity is a measure to quantify the closeness of two quantum states. In an operational sense, it is defined as the minimal overlap between the probability distributions o…