33 citations · 248 across the 28 of their papers we have counts for
28 papers
Locally Acting Grover Mixers for Constraint-Preserving QAOA
Minjin Choi, Dongkeun Lee, Junghee Ryu
The Grover mixer quantum alternating operator ansatz (GM-QAOA) employs the Grover mixer to confine the quantum evolution to the feasible subspace defined by the problem. Its mixing…
Robustness measures for quantifying nonlocality
Kyunghyun Baek, Junghee Ryu, Jinhyoung Lee
We suggest generalized robustness for quantifying nonlocality and derive its equivalence to the maximum violation ratio of Bell inequalities defined as vectors with non-negative el…
Violation of Bell inequality by four photon Greenberger Horne Zeilinger state with a phase from a warm atomic ensemble
Jiho Park, Junghee Ryu, Heonoh Kim +1
A Greenberger Horne Zeilinger (GHZ) entangled state with a phase is crucial for realizing desired multipartite quantum states for practical applications. Here, we report violations…
Exploring entanglement resource in Si quantum dot systems with operational quasiprobability approach
Junghee Ryu, Hoon Ryu
We characterize the quantum entanglement of the realistic two-qubit signals that are sensitive to charge noises. Our working example is the time response generated from a silicon d…
Average fidelity and fidelity deviation in noisy quantum teleportation
WooYeong Song, Junghee Ryu, Kyunghyun Baek +1
We analyze the average fidelity (say, F) and the fidelity deviation (say, D) in noisy-channel quantum teleportation. Here, F represents how well teleportation is performed on avera…
Necessary and sufficient condition for joint measurability
Jeongwoo Jae, Kyunghyun Baek, Junghee Ryu +1
In order to analyze joint measurability of given measurements, we introduce a Hermitian operator-valued measure, called -measure, such that it has marginals of positive operator…