45 citations · 219 across the 10 of their papers we have counts for
12 papers
Fundamental limits on concentrating and preserving tensorized quantum resources
Jaehak Lee, Kyunghyun Baek, Jiyong Park +2
Quantum technology offers great advantages in many applications by exploiting quantum resources like nonclassicality, coherence, and entanglement. In practice, an environmental noi…
Quantum non-Gaussianity and secure quantum communication
Jaehak Lee, Jiyong Park, Hyunchul Nha
No-cloning theorem, a profound fundamental principle of quantum mechanics, also provides a crucial practical basis for secure quantum communication. The security of communication c…
Faithful measure of Quantum non-Gaussianity via quantum relative entropy
Jiyong Park, Jaehak Lee, Kyunghyun Baek +2
We introduce a measure of quantum non-Gaussianity (QNG) for those quantum states not accessible by a mixture of Gaussian states in terms of quantum relative entropy. Specifically,…
Quantifying non-Gaussianity of quantum-state correlation
Jiyong Park, Jaehak Lee, Se-Wan Ji +1
We consider how to quantify non-Gaussianity for the correlation of a bipartite quantum state by using various measures such as relative entropy and geometric distances. We first sh…
Optimal continuous-variable teleportation under energy constraint
Jaehak Lee, Jiyong Park, Hyunchul Nha
Quantum teleportation is one of the crucial protocols in quantum information processing. It is important to accomplish an efficient teleportation under practical conditions, aiming…
Revealing nonclassicality beyond Gaussian states via a single marginal distribution
Jiyong Park, Yao Lu, Jaehak Lee +6
A standard method to obtain information on a quantum state is to measure marginal distributions along many different axes in phase space, which forms a basis of quantum state tomog…