Publications
Publications
A. First and corresponding author papers
1. C. Kim, H. Kim, H. Jung, H. Kwon. “Integrated bright source of polarization-entangled photons using lithium niobate photonic chips,” Optica, in press (2026).
2. J. Lee, U. J. Park, M. Cho, H.-S. Jang, S. Moon, H. Hwang, M.-K. Seo, D.-H. Ahn, S.-W. Han, Y.-S. Kim, H. Kwon*, H. Jung*, “Lithium Niobate Electro-Optic Photonic Processor for Variational Quantum Eigensolver,” Advanced Science, in press (2026).
3. M. Choi, C. Kim, S. Moon, H. Hwang, M.-K. Seo, H.-T. Lim, H. Chung, H. Jung*, H. Kwon*, “Versatile on-chip reconfigurable two-photon interference platforms using thin-film lithium niobite,” APL Photonics, 11, 066106 (2026).
4. S. Moon, H. Kim, J. Lee, C. Kim, M. Choi, H.-S. Jang, H. Bae, H. Hwang, M.-K. Seo, H. Jung, and H. Kwon, "μW-level green light generation via quasi- and modal-phase-matched lithium niobate waveguides," Opt. Express 33, 50922-50936 (2025).
5. J. Lee, S. Moon, Y. Park, U. Park, H. Kim, C. Kim, M. Choi, J.-I. Lee, H. Hwang, M.-K. Seo, D.-H. Ahn, H. Jung* and H. Kwon*, “On-chip polarization management for stable nonlinear signal generation in thin-film lithium niobite,” Nanophotonics 14, 2691 (2025).
6. C. Kim, H. Kim, S. Moon, H. Jung*, H. Kwon*, Integrated lithium niobate photonic devices for photonic quantum information science. Nano Convergence 12, 65 (2025).
7. S. Moon, H. Kim, J. Lee, C. Kim, M. Cho, H. Bae, H. Hwang, M.-K. Seo, H. Jung*, and H. Kwon*, "Efficient Green Light Generation via Quasi- and Modal-Phase-Matched Lithium Niobate Waveguides," Opt. Exp. 33, 50922 (2025)
8. H. Kim, S. Moon, C. Kim, M. Choi, H. Bae, S. Moon, H.-S. Jang, H.-Y. Jeon, H. Hwang, M.-K. Seo, H. Jung*, H. Kwon*, "Continuous-Wave Laser-Driven Cascaded Harmonic Generation in a Periodically Poled Lithium Niobate Racetrack Resonator," Laser & Photon. Rev., e01794 (2025)
9. S. Moon, J. Lee, J. Lee, Y. Koh, C. Kim, H.-S. Jang, S. Kim, S.-W. Han, H. Jung*, and H. Kwon*, "Broadband Thin-Film Lithium Niobate Rapid Adiabatic Couplers Enabling Highly Visible Two-Photon Interference," Photonics Research, 13, 1579 (2025)
10. H. Heo, M.-K. Woo, C.-H. Park, H.-S. Jang, H. Hwang, H. Lee, M.-K. Seo, S. Kim, H. Kwon, H. Jung*, S. W. Han*, "On-chip quantum key distribution over field-deployed fiber using lithium niobate photonic circuit," APL Photonics 10, 031301 (2025)
11. H.-S. Jang, H. Heo, S. Kim, H. Hwang, H. Lee, M.–K. S. H. Kwon, S.-W. Han, and H. Jung, "Fabrication of a 3D mode size converter for efficient edge coupling in photonic integrated circuits," Opt. Exp. 33, 6909 (2025) (Editor's Pick)
12. H. Heo, K. Kwon, D. Lee, H.-S. Jang, S. Kim, H. Shin, Y.-S. Kim, S.-W. Han, and H. Jung, "Classical and quantum experiments using hybrid Si3N4-LiNbO3 Photonic Chip," IEEE Photon. Tech. Lett. 37, 173 (2025)
13. G. Sim, S.-W. Jeon, Do. D. Kang, Y. S. Lee, Y. Kim, K. Oh, S. –W. Han, and H. Jung, "Tantalum pentoxide on a fused quartz substrate platform for advanced photonic integrated circuits," Opt. Mat. Exp. 14, 2972 (2024)
14. K. Kwon, H. Heo, D. Lee, H. Kim, H.-S. Jang, W. Shin, H.-T. Lim, Y.-S. Kim, S.-W. Han, S. Kim, H. Shin, H. Kwon, H. Jung, "Photon-pair generation using inverse-designed thin-film lithium niobate mode converters," APL Photonics 9, 056108 (2024)
15. H.-S. Jang, D. Lee, H. Heo, Y.-S. Kim, H.-T. Lim, S.-W. Jeon, S. Moon, S. Kim, S.-W. Han, and H. Jung, “Aluminum nitride waveguide beam splitters for integrated quantum photonic circuits,” Photonics Research, 11, 1196 (2023)
16. T.-Y. Hwang, J. Lee, S.-W. Jeon, Y.-S. Kim, Y.-W. Cho, H.-T. Lim, S. Moon, S.-W. Han, Y.-H. Choa, and H. Jung, “Sub-10 nm Precision Engineering of Solid-State Defects via Nanoscale Aperture Array Mask,” Nano Lett. 22, 1672 (2022)
17. H. Jung, S.-P. Yu, D. R. Carlson, T. E. Drake, T. C. Briles, S. B. Papp, “Tantala Kerr-nonlinear integrated photonics,” Optica 8, 811 (2021).
18. S.-W. Jeon, K. Kwon, S.-W. Han, Y.-S. Kim, Y.-W. Cho, H.-T. Lim, S. M., Heedeuk Shin, and H. Jung, “Diamond photonic crystal mirror with a partial bandgap by two 2D photonic crystal layers,” Optics Express, 28, 39048 (2020).
19. H. Jung, Z. Gong, X. Liu, X. Guo, C. Zou, and H. X. Tang, “Stokes and anti-Stokes Raman scatterings from frequency comb lines in poly-crystalline aluminum nitride microring resonators,” Optics Express, 27, 22246 (2019)
20. B. Paulson*, H. Jung*, J. Hwang, S. Hong, S. Lee, J. K. Kim, and K. Oh, “High sensitivity temperature measurement via mask-free hybrid polymer long period fiber grating,” Optics Express, 26, 16125 (2018). (*co-first author)
21. H. Jung, X. Guo, N. Zhu, S. B. Papp, S. A. Diddams, and H. X. Tang, “Phase-dependent interference between frequency doubled comb lines in a χ(2) phase-matched AlN microring,” Optics Letters, 41, 3747 (2016).
22. H. Jung and H. X. Tang, “Aluminum nitride as nonlinear optical material for on-chip frequency comb generation and frequency conversion,” Nanophotonics, 5, 263 (2016).
23. H. Jung, M. Poot, and H. X. Tang, “In-resonator variation of waveguide cross-sections for dispersion control of aluminum nitride micro-rings,” Optics Express, 23, 30634 (2015).
24. H. Jung, R. Stoll, X. Guo, D. Fischer, and H. X. Tang, “Green, red, and IR frequency comb line generation from single IR pump in AlN microring resonator,” Optica, 1, 396 (2014).
25. H. Jung, K. Y. Fong, C. Xiong, and H. X. Tang “Electrical tuning and switching of optical microcomb generated in aluminum nitride micro-ring resonators”, Optics Letters, 39, 84 (2014).
26. P. T. Lin*, H. Jung*, L. C. Kimerling, A. Agarwal, and H. X. Tang, “Low-loss aluminum nitride thin film for mid-infrared microelectronics,” Laser Photon. Rev. 8, L23 (2014). (*co-first author)
27. H. Jung, C. Xiong, K. Y. Fong, X. Zhang, and H. X. Tang “Optical frequency comb generation from aluminum nitride microring resonator,” Optics Letters, 38, 2810 (2013).
28. H. Jung, Y. G. Seo, W. Ha, D.-K. Kim, S. H. Park, and K. Oh, “Mask-free hybrid long-period fiber grating fabrication by self-assembled periodic polymerization in silica hollow optical fiber,” Optics Letters, 34, 2745 (2009). (Selected in the Virtual Journal of Nanoscale Science & Technology (AIP, APS)).
29. H. Jung, W. Shin, J. K. Kim, S. H. Park, D.-K. Ko, J. Lee and K. Oh, “Bending and Strain Sensitivities in a Helicoidal Long-Period Fiber Gratings,” IEEE Photonics Technology Letters, 21, 1232 (2009).
B. Co-author papers
1. D. Lee, S.-W. Jeon, C.-H. Yi, Y. Kim, Y. Choi, S.-H. Lee, J. Cha, S.-B. Shim, J. Suh, I.-Y. Kim, D. D. Kang, H. Jung, C. Jeong, J.-p. Ahn, H. C. Park, S.-W. Han, C. Kim, “Diamond molecular balance: ultra-wide range Nanomechanical mass spectrometry from MDa to TDa,” Nano Letters 25, 10497 (2025).
2. C. Kim, M. Bae, M. Choi, S. Lee, M. Lee, C. Kim, H. Jung, H. Chung, H. Kwon, "Freeform thin-film lithium niobate mode converter for photon-pair generation," Nanophotonics 14, 1949 (2025)
3. H. Hwang, K. Ko, M. R. N, K. Moon, J. J. Ju, S.-W. Han, H. Jung, M.-K. Seo, H. Lee, "A wide-spectrum mid-infrared electro-optic intensity modulator employing a two-point coupled lithium niobate racetrack resonator," APL Photonics, 10, 016116 (2025)
4. K. Kwon, H. Shin, H.‑S. Jang, H. Heo, H. Jung, "Investigation of fundamental photonic devices and effect of post‑cleaning using potassium hydroxide on lithium niobate chip," J. of the Korean Physical Society, 86, 85 (2025)
5. H. Hwang, M. R. Nurrahman, H. Heo, K. Ko, K. Moon, J. J. Ju, S.-W. Han, H. Jung, H. Lee, M.-K. Seo, "Hyperband electro-optic modulator based on a two-pulley coupled lithium niobate racetrack resonator," Opt. Lett. 49, 658 (2024)
6. H. Hwang, H. Heo, K. Ko, M. R. Nurrahman, K. Moon, J. J. Ju, S.-W. Han, H. Jung, H. Lee, M.-K. Seo, "Electro-optic control of the external coupling strength of a high-quality-factor lithium niobate micro-resonator," Opt. Lett. 47, 6149 (2022)
7. J. Rehman, S. Hong, S. Lee, Y. Kim, Y. Cho, H. Jung, S. Moon, H. Shin, S. Han, and H. Lim, "Optimal strategy for multiple-phase estimation under practical measurement with multimode NOON states," Phys. Rev. A, 106, 0327612 (2022)
8. M. K. Woo, C. H. Park, B. K. Park, H. Jung, D. Kang, S.-W. Jeon, S. Kim, and S.-W. Han, "Plug-and-play QKD architecture with a self-optical pulse train generator," Opt. Express 30, 29461 (2022)
9. C.-H. Park, M.-K. Woo, B.-K. Park, S.-W. Jeon, H. Jung, S. Kim and S.-W. Han, "Experimental Demonstration of an Efficient Mach–Zehnder Modulator Bias Control for Quantum Key Distribution Systems," Electronics 11, 2207 (2022)
10. C. H. Park, M. K. Woo, B. K. Park, Y.-Su. Kim, H. Baek, S.-W. Lee, H.-T. Lim, S.-W. Jeon, H. Jung, S. Kim, and S.-W. Han, “2×N twin-field quantum key distribution network configuration based on polarization, wavelength, and time division multiplexing,” npj Quantum Inf. 8, 48 (2022)
11. S. Hong, J. Rehman, Y.-S. Kim, Y.-W. Cho, S.-W. Lee, H. Jung, S. Moon, S.-W. Han, and H.-T. Lim, “Quantum enhanced multiple-phase estimation with multi-mode N00N states," Nat. Comm. 12, 5211 (2021)
12. S.-P. Yu, D. C. Cole, H. Jung, G. T. Moille, K. Srinivasan, and S. B. Papp, “Spontaneous Pulse Formation in Edge-Less Photonic Crystal Resonators,” Nature Photonics, 15, 461 (2021).
13. D. Lee, Y.-W. Cho, H.-T. Lim, S.-W. Han, H. Jung, S. Moon, and Y.-S. Kim, "Characterizing Bell state analyzer using weak coherent pulses", Quantum Information Processing 20, 149 (2021).
14. T. Pramanik, D. Lee, Y.-W. Cho, H.-T. Lim, S.-W. Han, H. Jung, S. Moon, K. J. Lee, and Y.-S. Kim, “Equitable multiparty quantum communication without a trusted third party,” Physical Review Applied, 14, 064074 (2020).
15. S.-W Jeon, J. Lee, H. Jung, S.-W. Han, Y.-W. Cho, Y.-S. Kim, H.-T. Lim, Y. Kim, M. Niethammer, W. C. Lim, J. Song, S. Onoda, T. Ohshima, R. Reuter, A. Denisenko, J. Wrachtrup, and S.-Y. Lee, “Bright Nitrogen-Vacancy Centers in Diamond Inverted Nanocones,” ACS Photonics, 7, 2739 (2020).
16. M. K. Woo, B. K. Park, Y.-S. Kim, Y.-W. Cho, H. Jung, H.-T. Lim, S. Kim, S. Moon and S.-W. Han, “One to Many QKD Network System Using Polarization-Wavelength Division Multiplexing,” IEEE Access, 8, 194007 (2020).
17. D. Lee, S. Hong, Y.-W. Cho, H.-T. Lim, S.-W. Han, H. Jung, S. Moon, K. J. Lee, and Y.-S. Kim, “Reference-frame-independent, measurement-device-independent quantum key distribution using fewer quantum states,” Optics Lett. 45, 2624 (2020).
18. Y.-H. Choi, S. Hong, T. Pramanik, H.-T. Lim, Y.-S. Kim, H. Jung, S.-W. Han, S. Moon, and Y.-W. Cho, “Demonstration of simultaneous quantum steering by multiple observers via sequential weak measurements,” Optica, 7, 675 (2020).
19. S. Yu, H. Jung, T. C. Briles, K. Srinivasan, and S. B. Papp, “Photonic-crystal-reflector nano-resonators for Kerr-frequency combs,” ACS Photonics, 6, 2083 (2019).
20. X. Guo, C.-L. Zou, H. Jung, Z. Gong, A. Brunch, L. Jiang, and H. X. Tang, “Efficient generation of a near-visible frequency comb via Cherenkov-like radiation from a Kerr microcomb,” Phys. Rev. Applied. 10, 014012 (2018).
21. J. Chiles, N. Nader, D. D Hickstein, S. P. Yu, T. C. Briles, D. Carlson, H. Jung, J. M. Shainline, S. Diddams, S. B. Papp, S. W. Nam, R. P. Mirin, “Deuterated silicon nitride photonic devices for broadband optical frequency comb generation,” Optics Lett. 43, 1527-1530 (2018).
22. D. D. Hickstein, H. Jung, D. R. Carlson, A. Lind, I. Coddington, K. Srinivasan, G. Ycas, D. C. Cole, A. Kowligy, C. Fredrick, E. Lamb, N. Newbury, H. Tang, S. A. Diddams, and S. B. Papp, “Ultrabroadband supercontinuum generation and frequency comb stabilization using on-chip waveguides with both cubic and quadratic nonlinearities,” Phys. Rev. Applied 8, 014025 (2017).
23. A. Bruch, K. Xiong, H. Jung, X. Guo, C. Zhang, J. Han, and H. Tang, “Electrochemically Sliced Low Loss AlGaN Optical Microresonators,” Applied Physics Letters, 110, 021111 (2017).
24. X. Guo, C.-L. Zou, C. Schuck, H. Jung, R. Cheng, and H. Tang, “Parametric down-conversion photon-pair source on a nanophotonic chip,” Light: Science & Applications, 6, e16249 (2017).
25. X. Guo, C.-L. Zou, H. Jung, and H. X. Tang, “On-Chip Strong Coupling and Efficient Frequency Conversion between Telecom and Visible Optical Modes,” Phys. Rev. Lett. 117, 123902 (2016).
26. S. Lee, J. Park, Y. Jeong, H. Jung, and K. Oh, “Guided Wave Analysis of Hollow Optical Fiber for Mode Coupling Device Applications,” IEEE J. Lightwave Technol. 27, 4919 (2009).
27. S. Y. Choi, F. Rotermund, H. Jung, K. Oh, and D. I. Yeom, “Femtosecond mode-locked fiber laser employing a hollow optical fiber filled with carbon nanotube dispersion as saturable absorber,” Optics Express, 17, 21788, (2009).
Patents
1. Hojoong Jung, Sang Wook Han, Hyeongsoon Jang, Hyungjun Heo, "Etching mask for fabrication 3D mode converter and method for manufacturing optical waveguide using the same," 10-2023-0186330, South Korea, 18/955339, USA.
2. Su-Peng Yu, Scott B. Papp, David Carlson, Kartik Srinivasan, Hojoong Jung, “Tantala ring resonator and method for fabricating nonlinear photonic devices,” Patent, US 2021/0055627 A1, USA. (https://patents.justia.com/inventor/scott-b-papp)
3. Hojoong Jung, Sang Wook Han, Hyung Jun Heo, Han Suek Lee, Min Kyo Seo, Hyeon Hwang, "Method for etching lithiumniobate and method for forming lithiumniobate pattern using the same," 10-2022-0042690, South Korea, 18/114295, USA.
4. Hojoong Jung, Sang Wook Han, Hyung Jun Heo "Device for quantum key distribution based on lithium niobate, and apparatus having the same, and system having the same," Patent 10-2766752, South Korea.
5. Sang Wook Han, Hojoong Jung, Min Ki Woo, Chang Hoon Park, "Method for generating decoy signal using optical amplifier and communication apparatus performing the same," 10-2022-0156276, South Korea.
6. Min Ki Woo, Chang Hoon Park, Hojoong Jung, Sang Wook Han, "Communicating apparatus for supporting quantum key distribution between a plurality of communication device and multiple quantum key distribution system," 10-2022-0156278, South Korea.
7. Sang Wook Han, Yong Su Kim, Hyeon Jun Baek, Seung Woo Lee, Seung Woo Jeon, Hojoong Jung, Chang Hoon Park, "Bias voltage control apparatus for light intensity modulator and method thereof," 10-2021-0078699, South Korea
8. Hyang Tag Lim, Seong Jin Hong, Yong Su Kim, Seung Woo Lee, Hojoong Jung, Sung Wook Moon, Sang Wook Han, "Method and apparatus for generating multi-mode NOON state," 10-2021-0056258, South Korea
9. Sang Wook Han, Yong Su Kim, Hyeon Jun Baek, Seung Woo Lee, Hyang Tag Lim, Seung Woo Jeon, Hojoong Jung, Chang Hoon Park, "2-by-N Quantum key distribution system and communication device thereof for QKD," 10-2021-0078705, South Korea
10. Sang Wook Han, Sung Wook Moon, Yong Su Kim, Seung Woo Lee, Hyang Tag Lim, Hojoong Jung, Young Wook Cho, Il Young Kim, "Device for quantum key distribution, and apparatus having the same, and system having the same," 10-2020-0127401, South Korea
11. Yong Su Kim, Dong Hwa Lee, Young Wook Cho, Hyang Tag Lim, Sang Wook Han, Hojoong Jung, Sung Wook Moon, "Reference-frame-independent Measurement-device-independent quantum-key-distribution communication system using fewer quantum states," 10-2020-0060465, South Korea
12. Hojoong Jung, Tae Yeon Hwang, Sung Wook Moon, Sang Wook Han, Yong Su Kim, Young Wook Cho, Hyang Tag Lim, Seung Woo Lee, Jung Hyun Lee, Seung Woo Jeon, " Method for forming ion implantation mask and vacancy center using the same," 10-2020-0124081, South Korea
13. Sang Wook Han, Seung Woo Jeon, Sung Wook Moon, Yong Su Kim, Hyang Tag Lim, Hojoong Jung, Young Wook Cho, "Inverted nano-cone structure for photonic device and the method for manufacturing the same," 10-2020-0033552, South Korea
14. Kyunghwan Oh, Hojoong Jung, Yong Gon Seo, “Optical fiber comprising Long-period Fiber Grating, and preparation method thereof,” Patent, 1010792360000, Oct. 2011, South Korea.