Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Kim, Jehyun"'
Autor:
Jang, Wonjin, Kim, Jehyun, Park, Jaemin, Cho, Min-Kyun, Jang, Hyeongyu, Sim, Sangwoo, Jung, Hwanchul, Umansky, Vladimir, Kim, Dohun
Spins in solid systems can inherently serve as qubits for quantum simulation or quantum information processing. Spin qubits are usually prone to environmental magnetic field fluctuations; however, a spin qubit encoded in a decoherence-free-subspace (
Externí odkaz:
http://arxiv.org/abs/2409.19683
Autor:
Park, Joon Young, Shin, Young Jae, Shin, Jeacheol, Kim, Jehyun, Jo, Janghyun, Yoo, Hyobin, Haei, Danial, Hyun, Chohee, Yun, Jiyoung, Huber, Robert M., Gupta, Arijit, Watanabe, Kenji, Taniguchi, Takashi, Park, Wan Kyu, Shin, Hyeon Suk, Kim, Miyoung, Kim, Dohun, Yi, Gyu-Chul, Kim, Philip
Atomically thin van der Waals (vdW) films provide a novel material platform for epitaxial growth of quantum heterostructures. However, unlike the remote epitaxial growth of three-dimensional bulk crystals, the growth of two-dimensional (2D) material
Externí odkaz:
http://arxiv.org/abs/2405.20597
Autor:
Kumar, Ravi, Haug, André, Kim, Jehyun, Yutushui, Misha, Khudiakov, Konstantin, Bhardwaj, Vishal, Ilin, Alexey, Watanabe, Kenji, Taniguchi, Takashi, Mross, David F., Ronen, Yuval
Bilayer graphene has emerged as a key platform for non-Abelian fractional quantum Hall (FQH) states, exhibiting multiple half-filled plateaus with large energy gaps. Here, we report four unexpected quarter-filled states and complete the sequence of h
Externí odkaz:
http://arxiv.org/abs/2405.19405
Autor:
Kim, Jehyun, Dev, Himanshu, Kumar, Ravi, Ilin, Alexey, Haug, André, Bhardwaj, Vishal, Hong, Changki, Watanabe, Kenji, Taniguchi, Takashi, Stern, Ady, Ronen, Yuval
Quasi-particles in fractional quantum Hall states are collective excitations that carry fractional charge and anyonic statistics. While the fractional charge affects semi-classical characteristics such as shot noise and charging energies, the anyonic
Externí odkaz:
http://arxiv.org/abs/2402.12432
Autor:
Song, Younguk, Yun, Jonginn, Kim, Jehyun, Jang, Wonjin, Jang, Hyeongyu, Park, Jaemin, Cho, Min-Kyun, Sohn, Hanseo, Usami, Noritaka, Miyamoto, Satoru, Itoh, Kohei M., Kim, Dohun
Publikováno v:
npj Quantum Inf. 10, 77 (2024)
Engineered spin-electric coupling enables spin qubits in semiconductor nanostructures to be manipulated efficiently and addressed individually. While synthetic spin-orbit coupling using a micromagnet is widely used for driving qubits based on single
Externí odkaz:
http://arxiv.org/abs/2310.12603
Autor:
Jung, Hwanchul, Park, Dongsung T., Lee, Seokyeong, Kim, Uhjin, Yang, Chanuk, Kim, Jehyun, Umansky, V., Kim, Dohun, Sim, H. -S., Chung, Yunchul, Choi, Hyoungsoon, Choi, Hyung Kook
Publikováno v:
Nat Commun 14, 415 (2023)
The resemblance between electrons and optical waves has strongly driven the advancement of mesoscopic physics. However, electron waves have yet to be understood in open cavity structures which have provided contemporary optics with rich insight towar
Externí odkaz:
http://arxiv.org/abs/2303.08386
Autor:
Jang, Wonjin, Kim, Jehyun, Park, Jaemin, Kim, Gyeonghun, Cho, Min-Kyun, Jang, Hyeongyu, Sim, Sangwoo, Kang, Byoungwoo, Jung, Hwanchul, Umansky, Vladimir, Kim, Dohun
Publikováno v:
Nature Communications 14, 2948 (2023)
Multielectron semiconductor quantum dots (QDs) provide a novel platform to study the role of Coulomb correlations in finite quantum systems and their impact on many-body energy spectra. An example is the formation of interaction-driven, spatially loc
Externí odkaz:
http://arxiv.org/abs/2207.11655
Autor:
Yun, Jonginn, Park, Jaemin, Jang, Hyeongyu, Kim, Jehyun, Jang, Wonjin, Song, Youngwook, Cho, Min-Kyun, Sohn, Hanseo, Jung, Hwanchul, Umansky, Vladimir, Kim, Dohun
Publikováno v:
npj Quantum Inf 9, 30 (2023)
We report the simultaneous operation and two-qubit coupling measurement of a pair of two-electron spin qubits that are actively decoupled from quasistatic nuclear noise in a GaAs quadruple quantum dot array. Coherent Rabi oscillations of both qubits
Externí odkaz:
http://arxiv.org/abs/2206.04321
Autor:
Kim, Jehyun, Yun, Jonginn, Jang, Wonjin, Jang, Hyeongyu, Park, Jaemin, Song, Youngwook, Cho, Min-Kyun, Shim, Sangwoo, Sohn, Hanseo, Jung, Hwanchul, Umansky, Vladimir, Kim, Dohun
We report energy selective tunneling readout-based Hamiltonian parameter estimation of a two-electron spin qubit in a GaAs quantum dot array. Optimization of readout fidelity enables a single-shot measurement time of 16 on average, with adaptive init
Externí odkaz:
http://arxiv.org/abs/2203.01101
Autor:
Jang, Wonjin, Cho, Min-Kyun, Jang, Hyeongyu, Kim, Jehyun, Park, Jaemin, Kim, Gyeonghun, Kang, Byoungwoo, Jung, Hwanchul, Umansky, Vladimir, Kim, Dohun
Publikováno v:
Nano Lett. 21, 4999-5005 (2021)
We report a single-shot-based projective readout of a semiconductor hybrid qubit formed by three electrons in a GaAs double quantum dot. Voltage-controlled adiabatic transitions between the qubit operations and readout conditions allow high-fidelity
Externí odkaz:
http://arxiv.org/abs/2101.11864