Publications

Asymptotic teleportation schemes bridging between standard and port-based teleportation
Ha Eum Kim and Kabgyun Jeong, Asymptotic teleportation scheme bridging between standard and port-based teleportation,  Quantum Sci. Technol. 9, 045014  (2024).

Estimating quantum mutual information through a quantum neural network
Myeongjin Shin, Junseo Lee, and Kabgyun Jeong, Estimating quantum mutual information through a quantum neural network, Quantum Inf. Process. 23, 57 (2024).

Port-based entanglement teleportation via noisy resource states
Ha Eum Kim and Kabgyun Jeong, Port-based entanglement teleportation via noisy resource states, Phys. Scr. 99, 035105 (2024).

Weighted p-Rényi Entropy Power Inequality: Information Theory to Quantum Shannon Theory
Junseo Lee, Hyeonjun Yeo, and Kabgyun Jeong, Weighted p-Rényi Entropy Power Inequality: Information Theory to Quantum Shannon Theory, Int. J. Theor. Phys. 62, 253 (2023).

Quantum Rényi entropy functionals for bosonic Gaussian systems
Junseo Lee and Kabgyun Jeong, Quantum Rényi entropy functionals for bosonic Gaussian systems, Phys. Lett. A 490, 129183 (2023). [Special Issue]

Sample-size-reduction of quantum states for the noisy linear problem
Kabgyun Jeong, Sample-size-reduction of quantum states for the noisy linear problem, Ann. Phys. 449, 169215 (2023).

Decomposed Entropy and Estimation of Output Power in Deformed Microcavity Lasers
Kyu-Won Park, Kwon-Wook Son, Chang-Hyun Ju, and Kabgyun Jeong, Decomposed Entropy and Estimation of Output Power in Deformed Microcavity Lasers, Entropy 24, 1737 (2022).

Polynomial T-depth Quantum Solvability of Noisy Binary Linear Problem: From Quantum-Sample Preparation to Main Computation
Wooyeong Song, Youngrong Lim, Kabgyun Jeong, Jinhyoung Lee, Jung Jun Park, Myungshik Kim, and Jeongho Bang, Polynomial T-depth Quantum Solvability of Noisy Binary Linear Problem: From Quantum-Sample Preparation to Main Computation, New J. Phys. 24, 103014 (2022).

Entropic comparison of Landau-Zener and Demkov interactions in the phase space of a quadrupole billiard
Kyu-Won Park, Juman Kim, Jisung Seo, Songky Moon, Kabgyun Jeong, and Kyungwon An, Entropic comparison of Landau-Zener and Demkov interactions in the phase space of a quadrupole billiard, Chaos 32, 103101 (2022).

Entropic measure of directional emissions in microcavity lasers
Kyu-Won Park, Chang-Hyun Ju, and Kabgyun Jeong, Entropic measure of directional emissions in microcavity lasers, Phys. Rev. A 106, L031504 (2022).

Quantum solvability of noisy linear problems by divide-and-conquer strategy
Wooyeong Song, Youngrong Lim, Kabgyun Jeong, Yun-Seong Ji, Jinhyoung Lee, Jaewan Kim, Myungshik Kim, and Jeongho Bang, Quantum solvability of noisy linear problems by divide-and-conquer strategy, Quantum Sci. Technol. 7, 025009 (2022).

Indicators of wavefunction (de)localisation for avoided crossing in a quadrupole quantum billiard
Kyu-Won Park, Juman Kim, Jisung Seo, Songky Moon, and Kabgyun Jeong, Indicators of wavefunction (de)localisation for avoided crossing in a quadrupole quantum billiard, J. Phys. Commun. 5, 115009 (2021).

High-dimensional private quantum channels and regular polytopes
Junseo Lee and Kabgyun Jeong, High-dimensional private quantum channels and regular polytopes, Commun. Phys. 31, 189 (2021).

Approximate Private Quantum Channels on Fermionic Gaussian Systems
Kabgyun Jeong, Approximate Private Quantum Channels on Fermionic Gaussian Systems, J. Quantum Inf. Sci. 11, 1 (2021).

Relative Entropy as a Measure of Difference between Hermitian and Non-Hermitian Systems
Kabgyun Jeong, Kyu-Won Park, and Jaewan Kim, Relative Entropy as a Measure of Difference between Hermitian and Non-Hermitian Systems, Entropy (Special issue) 22, 809 (2020).

Upper bounds on the private capacity for bosonic Gaussian channels
Kabgyun Jeong, Upper bounds on the private capacity for bosonic Gaussian channels, Phys. Lett. A 384, 126730 (2020).

Generalization of port-based teleportation and controlled teleportation capability
Kabgyun Jeong, Jaewan Kim, and Soojoon Lee, Generalization of port-based teleportation and controlled teleportation capability, Phys. Rev. A 102, 012414 (2020).

Upper bounds on the quantum capacity for a general attenuator and amplifier
Youngrong Lim, Soojoon Lee, Jaewan Kim, and Kabgyun Jeong, Upper bounds on the quantum capacity for a general attenuator and amplifier, Phys. Rev. A 99, 052326 (2019).

Universal upper bounds for Gaussian information capacity

Kabgyun Jeong, Hun Hee Lee, and Youngrong Lim, Universal upper bounds for Gaussian information capacity, Ann. Phys. 407, 46 (2019).

Maximally entangled states in discrete and Gaussian regimes

Youngrong Lim, Jaewan Kim, Soojoon Lee, and  Kabgyun Jeong, Maximally entangled states in discrete and Gaussian regimes, Quantum Inf. Process. 18, 43 (2019).

Encryptions at a Long Distance Through Quantum Key Distribution Protocols

Kabgyun Jeong, Yong Jin Kim, Jong Beom Yoon, Geon Woo Kim, Gueha Cho, and Suntaek Kim, Homomorphic Encryptions at a Long Distance Through Quantum Key Distribution Protocols, New Phys.: Sae Mulli 69, 187 (2019).

Non-Hermiticity and conservation of orthogonal relation in dielectric microcavity

Kyu-Won Park, Songky Moon, Hyunseok Jeong, Jaewan Kim, and  Kabgyun Jeong, Non-Hermiticity and conservation of orthogonal relation in dielectric microcavity, J. Phys. Commun. 2, 075007 (2018).

Shannon entropy and avoided crossings in closed and open quantum billiards

Kyu-Won Park, Songky Moon, Younghoon Shin, Jinuk Kim, Kabgyun Jeong, and Kyungwon An, Shannon entropy and avoided crossings in closed and open quantum billiards, Phys. Rev. E 97, 062205 (2018).

Conditional quantum entropy power inequality for d-level quantum systems

Kabgyun Jeong, Soojoon Lee, and Hyunseok Jeong, Conditional quantum entropy power inequality for d-level quantum systems, J. Phys. A: Math. Theor. 51, 145303 (2018).

Single Qubit Private Quantum Channels and 3-Dimensional Regular Polyhedra

Kabgyun Jeong, Junseo Lee, Jin Tae Choi, Seok Min Hong, Myung Gu Jung, Gyeong Beom Kim, Jae Kwon Kim, and Suntaek Kim, Single Qubit Private Quantum Channels and 3-Dimensional Regular Polyhedra, New Phys.: Sae Mulli 68, 232 (2018).

Minimal control power of controlled dense coding and genuine tripartite entanglement

Changhun Oh, Hoyong Kim, Kabgyun Jeong, and Hyunseok Jeong, Minimal control power of controlled dense coding and genuine tripartite entanglement, Sci. Rep. 7, 3765 (2017).

Behavior of three modes of decay channels and their self-energies of elliptic dielectric microcavity

Kyu-Won Park, Jaewan Kim, and Kabgyun Jeong, Behavior of three modes of decay channels and their self-energies of elliptic dielectric microcavity, Phys. Rev. A 94, 033833 (2016).

Purification of Gaussian maximally mixed states

Kabgyun Jeong and Youngrong Lim, Purification of Gaussian maximally mixed states, Phys. Lett. A 380, 3607 (2016).

Minimal control power of the controlled teleportation

Kabgyun Jeong, Jaewan Kim, and Soojoon Lee, Minimal control power of the controlled teleportation, Phys. Rev. A 93, 032328 (2016).

Non-Hermitian Hamiltonian and Lamb shift in circular dielectric microcavity

Kyu-Won Park, Jaewan Kim, and Kabgyun Jeong, Non-Hermitian Hamiltonian and Lamb shift in circular dielectric microcavity, Opt. Commun. 368, 190 (2016).

Gaussian private quantum channel with squeezed coherent states

Kabgyun Jeong, Jaewan Kim, and Su-Yong Lee, Gaussian private quantum channel with squeezed coherent states, Sci. Rep. 5, 13974 (2015).

Secure sequential transmission of quantum information

Kabgyun Jeong and Jaewan Kim, Secure sequential transmission of quantum information, Quantum Inf. Process. 14, 3523 (2015).

Approximate Quantum State Sharings via Pair of Private Quantum Channels

Dong Pyo Chi and Kabgyun Jeong, Approximate Quantum State Sharings via Pair of Private Quantum Channels, J. Quant. Inf. Sci. 4, 64 (2014).

Concurrence of assistance and Mermin inequality on three-qubit pure states

Dong Pyo Chi, Kabgyun Jeong, Taewan Kim, Kyungjin Lee, and Soojoon Lee, Concurrence of assistance and Mermin inequality on three-qubit pure states, Phys. Rev. A 81, 044302 (2010).

Multipartite bound entanglement and multisetting Bell inequalities

Dong Pyo Chi, Kabgyun Jeong, Taewan Kim, Kyungjin Lee, and Soojoon Lee, Multipartite bound entanglement and multisetting Bell inequalities, Phys. Rev. A 80, 032330 (2009).

Monogamy equality in 2⊗2⊗d quantum systems

Dong Pyo Chi, Jeong Woon Choi, Kabgyun Jeong, Jeong San Kim, Taewan Kim, and Soojoon Lee, Monogamy equality in 2⊗2⊗d quantum systems, J. Math. Phys. 49, 112102 (2008).

METHOD FOR ESTIMATING QUANTUM MUTUAL INFORMATION THROUGH A QUANTUM NEURAL NETWORK
Kabgyun Jeong,  Myeongjin Shin and  Junseo Lee, Korea Patent: App. No. 10-2024-0091151 (10 Jul. 2024).

METHOD FOR CALCULATING OF BOUNDARIES OF ENTANGLEMENT IN PORT-BASED ENTANGLEMENT TELEPORTATION SYSTEM
Kabgyun Jeong and Haeum Kim, Korea Patent: App. No. 10-2024-0076152 (12 Jun. 2024).

Method and simulation device for estimating decomposition entropy and output power in deformed microcavity laser
Kabgyun Jeong and Kyu-Won Park, Korea Patent: App. No. 10-2023-0019108 (14 Feb. 2023).

Device that simulates microcavity laser system that creates double exception points using super-radiation
Kabgyun Jeong and Kyu-Won Park, Korea Patent: App. No. 10-2023-0011707 (30 Jan. 2023).

Entropy Measurement Method and System for Directional Emission of Microcavity Lasers
Kabgyun Jeong and Kyu-Won Park, Korea Patent: App. No. 10-2022-0077201 (24 Jun. 2022).

Method for noise linearity of quantum system and quantum system performing the same
Kabgyun Jeong, Korea Patent: App. No. 10-2021-0121720 (13 Sept. 2021).

SYSTEM AND METHOD FOR PORT-BASED CONTROLLED QUANTUM TELEPORTATION
Soojoon Lee and Kabgyun Jeong, Korea Patent: App. No. 10-2020-0156056 (19 Nov. 2020), Patent No. 10-2381094 (31 Mar. 2022).

QUANTUM AUTHENTICATION METHOD AND APPARATUS FOR QUANTUM SECRET SHARING PROTOCOL
Jeong Woon Choi, Ku-Yong Chang, Dong Pyo Chi, Soojoon Lee, Kabgyun Jeong, and Taewan Kim, Korea Patent: App. No. 10-2012-0071883 (03 Jul. 2012).