Publications

Fault-tolerant and secure long-distance quantum communication via uncorrectable-error-injection
IlKwon Sohn, Boseon Kim, Kwangil Bae, Wooyeong Song, Chankyun Lee, Kabgyun Jeong, and Wonhyuk Lee, arXiv:2411.14710.
Accepted at EPJ Quantum Technol. (2025. 10).

Mutual information maximizing quantum generative adversarial networks  
Mingyu Lee, Myeongjin Shin, Junseo Lee, and Kabgyun Jeong,
Sci. Rep. 15, 32835 (2025). 

Resource-efficient algorithm for estimating the trace of quantum state powers
Myeongjin Shin*, Junseo Lee*, Seungwoo Lee, and Kabgyun Jeong,
Quantum 9, 1832 (2025).

Hidden quantum-classical correspondence in chaotic billiards revealed by mutual information
Kyu-Won Park, Soojoon Lee, and Kabgyun Jeong,
Phys. Rev. E 112, 024209 (2025).

Reducing circuit depth in quantum state preparation for quantum simulation using measurements and feedforward
Hyeonjun Yeo, Ha Eum Kim, IlKwon Sohn, and Kabgyun Jeong,
Phys. Rev. Applied 23, 054066 (2025).

Quantum entanglement and extractable work for Gaussian states
Jaewon Lee, Changsuk Noh, Kabgyun Jeong, and Hyunchul Nha,
Sci. Rep. 15, 24280 (2025).

Approximating Maximum Independent Set on Rydberg Atom Arrays Using Local Detunings
Hyeonjun Yeo, Ha Eum Kim, and Kabgyun Jeong,
Adv. Quantum Technol. 8, 2400291 (2025).

Disentangling quantum neural networks for unified estimation of quantum entropies and distance measures
Myeongjin Shin*, Seungwoo Lee*, Junseo Lee*, Mingyu Lee, Dongwha Ji, Hyeonjun Yeo, and Kabgyun Jeong,
Phys. Rev. A 110, 062418 (2024).

The effect of reducing the refresh rate of a task-irrelevant window on the temporal and spatial resolution of a task-relevant window
Yunsoo Yeo, Daun Jung, Cheongil Kim, Jeong Hyeon Park, Jieun Cho, Jeunghwan Choi, and Sang Chul Chong,
Korean J. Cogn. Bio. Psych. 36, 99  (2024).

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

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

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

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

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

Sample-size-reduction of quantum states for the noisy linear problem
Kabgyun Jeong,
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,
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,
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,
Chaos 32, 103101 (2022).

Entropic measure of directional emissions in microcavity lasers
Kyu-Won Park, Chang-Hyun Ju, and Kabgyun Jeong,
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 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,
J. Phys. Commun. 5, 115009 (2021).

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

Approximate Private Quantum Channels on Fermionic Gaussian Systems
Kabgyun Jeong,
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,
Entropy (Special issue) 22, 809 (2020).

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

Generalization of port-based teleportation and controlled teleportation capability
Kabgyun Jeong, Jaewan Kim, and Soojoon Lee,
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,
Phys. Rev. A 99, 052326 (2019).

Universal upper bounds for Gaussian information capacity

Kabgyun Jeong, Hun Hee Lee, and Youngrong Lim,
Ann. Phys. 407, 46 (2019).

Maximally entangled states in discrete and Gaussian regimes

Youngrong Lim, Jaewan Kim, Soojoon Lee, and  Kabgyun Jeong,
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,
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,
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,
Phys. Rev. E 97, 062205 (2018).

Conditional quantum entropy power inequality for d-level quantum systems

Kabgyun Jeong, Soojoon Lee, and Hyunseok Jeong,
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,
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,
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,
Phys. Rev. A 94, 033833 (2016).

Purification of Gaussian maximally mixed states

Kabgyun Jeong and Youngrong Lim,
Phys. Lett. A 380, 3607 (2016).

Minimal control power of the controlled teleportation

Kabgyun Jeong, Jaewan Kim, and Soojoon Lee,
Phys. Rev. A 93, 032328 (2016).

Non-Hermitian Hamiltonian and Lamb shift in circular dielectric microcavity

Kyu-Won Park, Jaewan Kim, and Kabgyun Jeong,
Opt. Commun. 368, 190 (2016).

Gaussian private quantum channel with squeezed coherent states

Kabgyun Jeong, Jaewan Kim, and Su-Yong Lee,
Sci. Rep. 5, 13974 (2015).

Secure sequential transmission of quantum information

Kabgyun Jeong and Jaewan Kim,
Quantum Inf. Process. 14, 3523 (2015).

Approximate Quantum State Sharings via Pair of Private Quantum Channels

Dong Pyo Chi and Kabgyun Jeong,
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,
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,
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,
J. Math. Phys. 49, 112102 (2008).

METHOD FOR REDUCING QUANTUM CIRCUIT DEPTH USING MEASUREMENTS AND FEEDFORWARD
Kabgyun Jeong, Hyeonjun Yeo and Haeum Kim,
Korea Patent: App. No. 10-2025-0148183 (14 Oct. 2025).

SYSTEM AND METHOD FOR ESTIMATING BOUNDS OF QUANTUM UNCOMMON INFORMATION BY QUANTUM NEURAL NETWORK
Kabgyun Jeong, Myeongjin Shin, and Donghwa Ji,,
Korea Patent: App. No. 10-2025-0096041 (16 Jul. 2025).

QUANTUM CONVOLUTIONAL NEURAL NETWORK SYSTEM AND OPERATION METHOD
Kabgyun Jeong, Myeongjin Shin, Seungwoo Lee, Mingyu Lee, Donghwa Ji, and Hyeonjun Yeo,
Korea Patent: App. No. 10-2025-0005647 (14 Jan. 2025).

METHOD FOR APPROXIMATING MAXIMUM INDEPENDENT SET ON RYDBERG ATOM ARRAYS USING LOCAL DETUNUNGS
Kabgyun Jeong, Hyeonjun Yeo and Haeum Kim,
Korea Patent: App. No. 10-2024-0104765 (06 Aug. 2024).

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); Open No. 10-2024-0126539 (21 Aug. 2024).
Patent No. 10-2832270 (04 Jul. 2025).

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); Open No. 10-2024-0119530 (06 Aug. 2024);
Patent No. 10-2798261 (16 Apr. 2025).

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); Open No. 10-2024-0000706 (03. Jan. 2024);
Patent No. 10-2780582 (07 Mar. 2025).

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); Open No. 10-2023-0038966 (21 Mar. 2023);
Patent No. 10-28009745 (14 May 2025)..

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);
Open No. 10-2012-0071883 (03 July 2012).