Publication

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2024

Classification of Single-Photon Emitters in Confocal Fluorescence Microscope Images by Deep Convolutional Neural Networks

Dongbeom Kim, Seoyoung Paik, Jeongeun Park, Seung-Jae Hwang, Shinobu Onoda, Takeshi Ohshima, Dong-Hee Kim*, Sang-Yun Lee*

Advanced Quantum Technologies (2024). https://doi.org/10.1002/qute.202400173

Main text
Supporting Information
Advanced Science News article


Selective Initialization Mechanism of Silicon Vacancy Spin Qubits with S=3/2 in Silicon Carbide

Jeongeun Park, Seoyoung Paik, Seung-Jae Hwang, Di Liu, Öney O. Soykal, Joerg Wrachtrup, and Sang-Yun Lee*

Phys. Rev. Applied 21, 054005 (2024). https://doi.org/10.1103/PhysRevApplied.21.054005 

Main text
Supplemental Material

2021

Strong Zero-Phonon Transition from Point Defect-Stacking Fault Complexes in Silicon Carbide Nanowires

Jin Hee Lee, Woong Bae Jeon, Jong Sung Moon, Junghyun Lee, Sang-Wook Han, Zoltán Bodrog, Adam Gali, Sang-Yun Lee, and Je-Hyung Kim*

Nano Lett. 21, 9187 (2021). https://doi.org/10.1021/acs.nanolett.1c03013


High-Resolution, High-Contrast Optical Interface for Defect Qubits

Jong Sung Moon, Haneul Lee, Jin Hee Lee, Woong Bae Jeon, Dowon Lee, Junghyun Lee, Seoyoung Paik, Sang-Wook Han, Rolf Reuter, Andrej Denisenko, Jörg Wrachtrup, Sang-Yun Lee, and Je-Hyung Kim*

ACS Photonics 8, 2642 (2021). https://doi.org/10.1021/acsphotonics.1c00576


Thermometric quantum sensor using excited state of silicon vacancy centers in 4H-SiC devices

Tuan Minh Hoang,  Hitoshi Ishiwata, Yuta Masuyama, Yuichi Yamazaki,  Kazutoshi Kojima, Sang-Yun Lee,  Takeshi Ohshima,  Takayuki Iwasaki, Digh Hisamoto, and  Mutsuko Hatano*

Appl. Phys. Lett. 118, 044001 (2021). https://doi.org/10.1063/5.0027603


Carrier dynamics of silicon vacancies of SiC under simultaneous optically and electrically excitations

Yuichi Yamazaki*, Yoji Chiba,  Shin-ichiro Sato, Takahiro Makino, Naoto Yamada, Takahiro Satoh,  Kazutoshi Kojima,  Yasuto Hijikata, Hidekazu Tsuchida, Norihiro Hoshino, Sang-Yun Lee, and Takeshi Ohshima

Appl. Phys. Lett. 118, 021106 (2021). https://doi.org/10.1063/5.0028318

2020

Bright Nitrogen-Vacancy Centers in Diamond Inverted Nano-cones

Seong-Woo Jeon, Jung-Hyun Lee, Hojoong Jung, Sang-Wook Han, Young-Wook Cho, Yong-Su Kim, Hyang-Tag Lim, Yanghee Kim, Matthias Niethammer, Weon Cheol Lim, Jonghan Song, Shinobu Onoda, Takeshi Ohshima, Rolf Reuter, Andrej Denisenko, Joerg Wrachtrup, and Sang-Yun Lee†

ACS Photonics 7 2739 (2020). https://pubs.acs.org/doi/10.1021/acsphotonics.0c00813

2019

Coherent electrical readout of defect spins in 4H-SiC by photo-ionization at ambient conditions

Matthias Niethammer, Matthias Widmann, Torsten Rendler, Naoya Morioka, Yu-Chen Chen, Rainer Stöhr, Jawad Ul Hassan, Shinobu Onoda, Takeshi Ohshima, Sang-Yun Lee, Amlan Mukherjee, Junichi Isoya, Nguyen Tien Son, Jörg Wrachtrup

Nature Communications 10, 5569 (2019) https://www.nature.com/articles/s41467-019-13545-z

arXiv:1903.12236 (2019). https://arxiv.org/abs/1903.12236

 

Electrical charge state manipulation of single silicon vacancies in a silicon carbide quantum optoelectronic device

Matthias Widmann*, Matthias Niethammer, Dmitry Yu. Fedyanin, Igor A. Khramtsov, Torsten Rendler, Ian D. Booker, Jawad Ul Hassan, Naoya Morioka, Yu-Chen Chen, Ivan G. Ivanov, Nguyen Tien Son, Takeshi Ohshima, Michel Bockstedte, Adam Gali, Cristian Bonato, Sang-Yun Lee* & Jörg Wrachtrup

Nano Letters 19, 7173 (2019) https://doi.org/10.1021/acs.nanolett.9b02774

arXiv:1906.05964 (2019). https://arxiv.org/abs/1906.05964

 

Creation of Color Centers in SiC PN Diodes Using Proton Beam Writing

Yoji Chiba, Yuichi Yamazaki *, Takahiro Makino, Shinichiro Sato, Naoto Yamada, Takahiro Satoh, Kazutoshi Kojima, Sang-Yun Lee, Yasuto Hijikata, Takeshi Ohshima

Materials Science Forum 963, 709 (2019) https://doi.org/10.4028/www.scientific.net/MSF.963.709

 

High-fidelity spin and optical control of single silicon vacancy centres in silicon carbide

Roland Nagy, Matthias Niethammer, Matthias Widmann, Yu-Chen Chen, Péter Udvarhelyi, Christian Bonato, Jawad Ul Hassan, Robin Karhu, Ivan G. Ivanov, Nguyen Tien Son, Jeronimo R. Maze, Takeshi Ohshima, Öney Soykal, Ádám Gali, Sang-Yun Lee*, Florian Kaiser*, and Jörg Wrachtrup

Nature Communications 10, 1954 (2019) https://doi.org/10.1038/s41467-019-09873-9

arXiv:1810.10296 https://arxiv.org/abs/1810.10296

 

Emergence of the geometric phase from quantum measurement back-action

Young-Wook Cho, Yosep Kim, Yeon-Ho Choi, Yong-Su Kim, Sang-Wook Han, Sang-Yun Lee, Sung Moon, and Yoon-Ho Kim

Nature Physics 15, 665-670 (2019) https://doi.org/10.1038/s41567-019-0482-z

 

Spectrally stable defect qubits with no inversion symmetry for robust spin-to-photon interface

Péter Udvarhelyi, Roland Nagy, Florian Kaiser, Sang-Yun Lee, Jörg Wrachtrup, Adam Gali

Physical Review Applied 11, 44022 (2019) https://link.aps.org/doi/10.1103/PhysRevApplied.11.044022

arXiv:1811.02037 https://arxiv.org/abs/1811.02037

 

Revealing hidden quantum steerability using local filtering operations

Tanumoy Pramanik, Young-Wook Cho, Sang-Wook Han, Sang-Yun Lee, Yong-Su Kim, Sung Moon

Physical Review A 99, 030101(R) (2019) https://doi.org/10.1103/PhysRevA.99.030101

 

Experimental comparison of various quantum key distribution protocols under reference frame rotation and fluctuation

Yoon, Juhwan, Juhwan Yoon, Tanumoy Pramanik, Byung-Kwon Park, Young-Wook Cho, Sang-Yun Lee,Sangin Kim, Sang-Wook Han, Sung Moon, Yong-Su Kim

Optics Communications 441, 64 (2019) https://doi.org/10.1016/j.optcom.2019.02.039

2018

Robust and efficient control of spin probes in a complex (biological) environment. Towards sensing of fast temperature fluctuations

Philipp Konzelmann, Torsten Rendler, Ville Bergholm, Andrea Zappe, Veronika Pfannenstill, Marwa Garsi, Florestan Ziem, Matthias Niethammer, Matthias Widmann, Sang-Yun Lee, Philipp Neumann, Jörg Wrachtrup

New Journal of Physics 20, 123013 (2018) http://stacks.iop.org/1367-2630/20/i=12/a=123013

arXiv:1808.04087 https://arxiv.org/abs/1808.04087

 

Informationally symmetrical Bell state preparation and measurement

Yong-Su Kim, Tanumoy Pramanik, Young-Wook Cho, Ming Yang, Sang-Wook Han , Sang-Yun Lee, Min-Sung Kang, and Sung Moon

Optics Express 26, 29539 (2018) https://doi.org/10.1364/OE.26.029539

 

Electrically controllable position-controlled color centers created in SiC pn junction diode by proton beam writing

Y. Yamazaki*, Y. Chiba, T. Makino, S. -I. Sato, N. Yamada, T. Satoh, Y. Hijikata, K. Kojima, S.-Y. Lee, T. Ohshima

Journal of Materials Research 33 (20), 3355-3361, 2018 https://doi.org/10.1557/jmr.2018.302

 

Experimental preparation and characterization of four-dimensional quantum states using polarization and time-bin modes of a single photon

Jinwon Yoo, Yujun Choi, Young-Wook Cho, Sang-Wook Han, Sang-Yun Lee, Sung Moon, Kyunghwan Oh, Yong-Su Kim

Optics Communications 419, 30-35 (2018) https://doi.org/10.1016/j.optcom.2018.02.071

 

Bright single photon sources in lateral silicon carbide light emitting diodes

Matthias Widmann*, Matthias Niethammer, Takahiro Makino, Torsten Rendler, Stefan Lasse, Takeshi Ohshima, Jawad Ul Hassan, Nguyen Tien Son, Sang-Yun Lee* & Jörg Wrachtrup

Applied Physics Letters 112, 231103 (2018) https://doi.org/10.1063/1.5032291

‣⁋Selected as “Editor’s pick”

 

Room Temperature Electrical Control of Single Photon Sources at 4H-SiC Surface

Shin-ichiro Sato*, Tomoya Honda, Takahiro Makino, Yasuto Hijikata, Sang-Yun Lee, and Takeshi Ohshima

ACS Photonics 5 (8), 3159-3165, 2018 https://doi.org/10.1021/acsphotonics.8b00375

 

Material platforms for spin-based photonic quantum technologies

Mete Atatüre, Dirk Englund, Nick Vamivakas, Sang-Yun Lee, and Joerg Wrachtrup

Nature Review Materials 3, 38-51 (2018) http://dx.doi.org/10.1038/s41578-018-0008-9

 

Quantum properties of dichroic silicon vacancies in silicon carbide

Roland Nagy, Matthias Widmann, Matthias Niethammer, Durga B.R. Dasari, Ilja Gerhardt, Öney O. Soykal, Marina Radulaski, Takeshi Ohshima, Jelena Vučković, Nguyen Tien Son, Ivan G. Ivanov, Sophia E. Economou, Cristian Bonato, Sang-Yun Lee*, Jörg Wrachtrup

Phys. Rev. Applied 9, 034022 (2018) https://doi.org/10.1103/PhysRevApplied.9.034022

arXiv:1707.02715 https://arxiv.org/abs/1707.02715

 

Direct quantum process tomography via measuring sequential weak values of incompatible observables

Yosep Kim, Yong-Su Kim, Sang-Yun Lee, Sang-Wook Han, Sung Moon, Yoon-Ho Kim & Young-Wook Cho

Nature Communications 9, 192 (2018) https://doi.org/10.1038/s41467-017-02511-2


2017

Scalable Quantum Photonics with Single Color Centers in Silicon Carbide

Marina Radulaski, Matthias Widmann, Matthias Niethammer, Jingyuan Linda Zhang, Sang-Yun Lee, Torsten Rendler, Konstantinos G. Lagoudakis, Nguyen Tien Son, Erik Janzén, Takeshi Ohshima, Jörg Wrachtrup, and Jelena Vučković

Nano Lett. 17, 1782–1786 (2017). http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.6b05102

arXiv:1612.02874 https://arxiv.org/abs/1612.02874

2016

Vector Magnetometry Using Silicon Vacancies in 4H-SiC Under Ambient Conditions

Matthias Niethammer, Matthias Widmann, Sang-Yun Lee*, Pontus Stenberg, Olof Kordina, Takeshi Ohshima, Nguyen Tien Son, Erik Janzén, Jörg Wrachtrup

Phys. Rev. Applied 6, 034001 (2016) http://dx.doi.org/10.1103/PhysRevApplied.6.034001

arXiv:1606.01301 http://arxiv.org/abs/1606.01301

 

Enhancing quantum sensing sensitivity by a quantum memory

Sebastian Zaiser, Torsten Rendler, Ingmar Jakobi, Thomas Wolf, Sang-Yun Lee, Samuel Wagner, Ville Bergholm, Thomas Schulte-Herbrüggen, Philipp Neumann & Jörg Wrachtrup

Nature Communications 7, 12279 (2016) http://www.nature.com/articles/ncomms12279

2015

Vector magnetometry based on S=3/2 electronic spins

Sang-Yun Lee*, Matthias Niethammer, Jörg Wrachtrup

Phys. Rev. B 92, 115201 (2015). http://dx.doi.org/10.1103/PhysRevB.92.115201

arXiv:1505.06914 (2015). http://arxiv.org/abs/1505.06914

 

Single molecule DNA detection with an atomic vapor notch filter

Denis Uhland, Torsten Rendler, Matthias Widmann, Sang-Yun Lee, Jörg Wrachtrup, Ilja Gerhardt

EPJ Quantum Technol. 2, 20 (2015). http://dx.doi.org/10.1140/epjqt/s40507-015-0033-1

arXiv:1502.07568 (2015). http://arxiv.org/abs/1502.07568

 

Coherent control of single spins in ​silicon carbide at room temperature

Matthias Widmann, Sang-Yun Lee*, Torsten Rendler, Nguyen Tien Son, Helmut Fedder, Seoyoung Paik, Nan Zhao, Li-Ping Yang, Sen Yang, Ian Booker, Andrej Denisenko, Mohammad Jamali, S. Ali Momenzadeh, Ilja Gerhardt, Takeshi Ohshima, Adam Gali, Erik Janzén, Jörg Wrachtrup

Nature Materials 14, 164–168 (2015). http://dx.doi.org/10.1038/nmat4145

  Featured in a News and Views by Andrea Morello in Nature Materials; “Quantum spintronics: Single spins in silicon carbide”. Nature Materials 14, 135–136 (2015) http://dx.doi.org/10.1038/nmat4171

arXiv:1407.0180 (2014). http://arxiv.org/abs/1407.0180


2014

Electron Spin Decoherence in Silicon Carbide Nuclear Spin Bath

Li-Ping Yang, Christian Burk, Matthias Widmann, Sang-Yun Lee, Jörg Wrachtrup, Nan Zhao

Physical Review B 90, 241203 (2014). http://link.aps.org/doi/10.1103/PhysRevB.90.241203

arXiv:1409.4646 (2014). http://arxiv.org/abs/1409.4646

 

Molecular-sized fluorescent nanodiamonds

Igor I. Vlasov, Andrey A. Shiryaev, Torsten Rendler, Steffen Steinert, Sang-Yun Lee, Denis Antonov, Márton Vörös, Fedor Jelezko, Anatolii V. Fisenko , Lubov  F. Semjonova , Johannes Biskupek, Ute Kaiser, Oleg I. Lebedev, Ilmo Sildos, Philip.R. Hemmer, VitalyI Konov, Adam Gali and Jörg Wrachtrup

Nature Nanotechnology 9, 54-58 (2014). http://dx.doi.org/10.1038/nnano.2013.255

Featured in News and Views by Christoph Becher in Nature Nanotechnology; “Fluorescent nanoparticles: Diamonds from outer space”, Nature Nanotechnology 9, 16–17 (2014). http://dx.doi.org/10.1038/nnano.2013.287

2013~2009

Numerical study of spin-dependent transition rates within pairs of dipolar and exchange coupled spins with S=1/2 during magnetic resonant excitation

M. E. Limes, J. Wang, W. J. Baker, Sang-Yun Lee, B. Saam, C. Boehme

Physical Review B 87, 165204 (2013). http://dx.doi.org/10.1103/PhysRevB.87.165204

arXiv:1210.0950 (2012). http://arxiv.org/abs/1210.0950

 

Investigation of NV centers in diamond nanocrystallites and nanopillars

Emil Petkov, Cyril Popov, Torsten Rendler, Christo Petkov, Florian Schnabel, Helmut Fedder, Sang-Yun Lee, Wilhelm Kulisch, Johann Peter Reithmaier, Jörg Wrachtrup

physica status solidi (b) 250, 48-50 (2013). http://dx.doi.org/10.1002/pssb.201248384

 

Modulation frequency dependence of continuous-wave optically/electrically detected magnetic resonance

Sang-Yun Lee (이상윤)*, Seoyoung Paik (백서영), Dane R. McCamey, Christoph Boehme*

Physical Review B 86, 115204 (2012). http://dx.doi.org/10.1103/PhysRevB.86.115204

 

Electrically detected crystal orientation dependent spin-Rabi beat oscillation of c-Si(111)/SiO2 interface states

Seoyoung Paik, Sang-Yun Lee, Dane R. McCamey, Christoph Boehme

Physical Review B 84, 235305 (2011). http://dx.doi.org/10.1103/PhysRevB.84.235305

 

Tuning hyperfine fields in conjugated polymers for coherent organic spintronics

Sang-Yun Lee, Seo-Young Paik, Dane R. McCamey, Justin Yu, Paul L. Burn, John M. Lupton, and Christoph Boehme

Journal of the American Chemical Society 133 (7), 2019-2021 (2011). http://dx.doi.org/10.1021/ja108352d

 

Spin-dependent dynamics of polaron pairs in organic semiconductors

Dane R. McCamey*, Sang-Yun Lee*, Seoyoung Paik, J. M. Lupton, and C. Boehme

Physical Review B 82, 125206 (2010). http://dx.doi.org/10.1103/PhysRevB.82.125206

 

Spin-dependent processes in amorphous silicon-rich silicon-nitride

S.-Y. Lee, S.-Y. Paik, D. R. McCamey, J. Hu, F. Zhu, A. Madan, and C. Boehme

Applied Physics Letters 97, 192104 (2010). http://dx.doi.org/10.1063/1.3509406

 

T1- and T2-spin relaxation time limitations of phosphorous donor electrons near crystalline silicon to silicon dioxide interface defects

S.-Y. Paik, S.-Y. Lee, W. J. Baker, D. R. McCamey, and C. Boehme

Physical Review B 81, 075214 (2010). http://dx.doi.org/10.1103/PhysRevB.81.075214

 

Hyperfine-field mediated spin beating in electrostatically-bound charge carrier pairs

D. R. McCamey, K. J. van Schooten, W. J. Baker, S.-Y. Lee, S.-Y. Paik, J. M. Lupton, and C. Boehme

Physical Review Letters 104, 017601 (2010). http://dx.doi.org/10.1103/PhysRevLett.104.017601

 

Pulsed electrically detected magnetic resonance in organic semiconductors

C. Boehme, D. R. McCamey, K. J. van Schooten, W. J. Baker, S.-Y. Lee, S.-Y. Paik, J. M. Lupton

physica status solidi (b) 246, 11-12, 2750-2755 (2009). http://dx.doi.org/10.1002/pssb.200982357

 

Experimental discrimination of geminate and non-geminate recombination in a-Si:H

T. W. Herring, S.-Y. Lee, D. R. McCamey, P. C. Taylor, K. Lips, J. Hu, F. Zhu, A. Madan, and C. Boehme

Physical Review B 79, 195205 (2009). http://dx.doi.org/10.1103/PhysRevB.79.195205


Before 2009

High energy(MeV) ion-irradiated pi-conjugated polyaniline: Transition from insulating state to carbonized conducting state

S. K. Park, S. Y. Lee, C. S. Lee, H. M. Kim, J. Joo, Y. W. Beag, S. K. Koh

Journal of Applied Physics 96, 1914-1918 (2004). http://link.aip.org/link/doi/10.1063/1.1769603

 

Conducting Polymer Nanotube and Nanowire Synthesized by Using Nanoporous Template: Synthesis, Characteristics, and Applications

J. Joo, K. T. Park, B. H. Kim, M. S. Kim, S. Y. Lee, C. K. Jeong, J. K. Lee, D. H. Park, W. K. Yi, S. H. Lee and K. S. Ryu

Synthetic Metals 135-136, 7-9 (2003). http://dx.doi.org/10.1016/S0379-6779(02)01021-4

 

Low Dielectric Constant of MeV Ion-Implanted Poly(vinylidene fluoride)

Sang-Yun Lee, Bo-Hyun Kim, Soung-Kyu Park, Jinsoo Joo, Yowng-Whoan Beag, Seok-Keun Koh

Macromolecular Research 11(1), 9-13 (2003). http://dx.doi.org/10.1007/BF03218271

 

Studies of pentacene-based thin film devices produced by cluster beam deposition methods

J. K. Lee, J. M. Koo, S. Y. Lee, T. Y. Choi, J. Joo, J. -Y. Kim, and J. -H. Choi

Optical Materials 21 (1-3), 451-454 (2003). http://dx.doi.org/10.1016/S0925-3467(02)00181-7

 

Uniaxial Stretching of Polypyrrole Cast Film

Kitae Song, Sang Yun Lee, Jin Soo Joo, Jun Young Lee

Molecular Crystals and Liquid Crystals 370, 305-308 (2001). http://dx.doi.org/10.1080/10587250108030094

 

Electrical, magnetic, and structural properties of lithium salt doped polyaniline

C. K. Jeong, J. H. Jung, B. H. Kim, S. Y. Lee, D. E. Lee, S. H. Jang, K. S. Ryu, J. Joo

Synthetic Metals 117, 99-103 (2001). http://dx.doi.org/10.1016/S0379-6779(00)00546-4

 

Charge transport and applications to the secondary batteries of lithium salt doped polyaniline

J. H. Jung, B. H. Kim, D. E. Lee, S. Y. Lee, B. W. Moon, J. Joo, S. H. Chang, K. S. Ryu

Journal of the Korean Physical Society 37, 396-401 (2000).

 

Physical characterization of electrochemically and chemically synthesized polypyrroles

J. Joo, J. K. Lee, S. Y. Lee, K. S. Jang, E. J. Oh, A. J. Epstein

Macromolecules 33, 5131-5136 (2000). http://dx.doi.org/10.1021/ma991418o

 

Effects of MeV Ion Implantation on Poly(vinylidene fluoride)

S. Y. LEE, B. H. KIM, S. K. PARK and J. JOO, Y. W. BEAG and S. K. KO

New Physics: Sae Mulli 42 180~186 (2001).