168 citations · 1.1k across the 45 of their papers we have counts for
4 papers · 1 filter
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…
Optimal entangled coherent states in lossy quantum-enhanced metrology
Su-Yong Lee, Yong Sup Ihn, Zaeill Kim
We investigate an optimal distance of two components in an entangled coherent state for quantum phase estimation in lossy interferometry. The optimal distance is obtained by an eco…
Sculpting out quantum correlations with bosonic subtraction
Marcin Karczewski, Su-Yong Lee, Junghee Ryu +3
We present a method to extract M-partie bosonic correlations from an N-partite maximally symmetric state (M < N) with the help of successive applications of single-boson subtractio…
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…