Article
Quantum Science & Technology
S. Auchter, C. Axline, C. Decaroli, M. Valentini, L. Purwin, R. Oswald, R. Matt, E. Aschauer, Y. Colombe, P. Holz, T. Monz, R. Blatt, P. Schindler, C. Roessler, J. Home
Summary: This study presents a highly scalable approach for fabricating a new generation of 3D ion traps using stacked wafers. The traps achieved a significant trapping depth and were characterized and evaluated comprehensively. This fabrication method has the potential to advance trapped-ion quantum computing.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Quantum Science & Technology
Felix Stopp, Henri Lehec, Ferdinand Schmidt-Kaler
Summary: In this experiment, we propose an alternative method for connecting trapped ion processor nodes using deterministic single ion transfer. The success rate of 95.1% achieved in our experiments demonstrates the potential for scalable ion trap quantum computing and advanced quantum sensing.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Quantum Science & Technology
U. Tanaka, M. Nakamura, K. Hayasaka, A. Bautista-Salvador, C. Ospelkaus, T. E. Mehlstaeubler
Summary: The microfabricated surface-electrode ion trap serves as a nanofriction emulator and is used to study the many-body dynamics of interacting systems. It allows for single-well and double-well trapping potentials in the radial direction, forming parallel ion strings suitable for the emulation of the Frenkel-Kontorova (FK) model. The trap is designed to create atomically accessible, self-assembled Coulomb systems with a wide tuning range for quantum simulations and nanofriction studies.
QUANTUM SCIENCE AND TECHNOLOGY
(2021)
Article
Instruments & Instrumentation
T. Dubielzig, S. Halama, H. Hahn, G. Zarantonello, M. Niemann, A. Bautista-Salvador, C. Ospelkaus
Summary: The study details the design, commissioning, and operation of an ultra-low-vibration closed-cycle cryogenic ion trap apparatus, showcasing its potential for implementing a small-scale ion-trap quantum processor or simulator. The system demonstrates successful trapping of Be-9(+) ions through its cooling power and vibration isolation system performance analysis.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Physics, Applied
Mizuki Shirao, Daniel Klawson, Sara Mouradian, Ming C. Wu
Summary: A one-dimensional focusing grating coupler array based in silicon nitride (SiN) was proposed for trapped ion qubit manipulation. The design was optimized to achieve high directionality, small beam diameter, and low crosstalk. Additionally, the impact of fabrication errors on system performance was also investigated through simulation analysis.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Multidisciplinary
Xueying Yang, Yi Xie, Jie Zhang, Manchao Zhang, Chunwang Wu, Wei Wu, Ting Chen, Ping-Xing Chen
Summary: In this study, we propose a scheme for manipulating phonon states using shortcuts to adiabaticity (STA) in ion traps. We experimentally demonstrate the effectiveness of this scheme by generating Fock states. Our results show that the STA manipulation of phonon states is 16 times faster than adiabatic evolution, and non-resonant excitation can be suppressed by laser bias frequency, which is confirmed by experimental results. Additionally, we investigate the robustness of STA and find that it is resilient to pulse shape deformation, bias noises, and stochastic noise.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Multidisciplinary
Marta Pita-Vidal, Arno Bargerbos, Rok Zitko, Lukas J. Splitthoff, Lukas Grunhaupt, Jaap J. Wesdorp, Yu Liu, Leo P. Kouwenhoven, Ramon Aguado, Bernard van Heck, Angela Kou, Christian Kraglund Andersen
Summary: Spin qubits in semiconductors are a promising platform for scalable quantum computing devices, but achieving multiqubit interactions over extended distances is challenging. Superconducting spin qubits encoded in Andreev levels provide an alternative with intrinsic spin-supercurrent coupling. This study demonstrates an electrostatically defined quantum dot Josephson junction with a spin-split doublet ground state, allowing for qubit manipulation and investigating the qubit performance using direct spin manipulation. Coupling the Andreev spin qubit with a superconducting transmon qubit shows strong coherent qubit-qubit coupling, a crucial step towards a hybrid architecture combining the advantages of both superconducting and semiconductor qubits.
Article
Materials Science, Multidisciplinary
Yizhu Hou, Xinfang Zhang, Wei Wu, Ting Zhang, Pingxing Chen, Zhijiao Deng
Summary: The surface-electrode ion trap is a promising device for quantum information processing, but faces challenges in micro-nano fabrication, especially in controlling electrode surface roughness. This paper presents a thick film micro-nano fabrication technology to control surface roughness, reducing it to 6.2 nm and providing a basis for further research on the influence of roughness on trap performance. The technology is not only suitable for various configurations of ion traps, but also applicable to other fields like MEMS, solar cells, and surface science.
Article
Physics, Applied
Joshua M. Wilson, Julia N. Tilles, Raymond A. Haltli, Eric Ou, Matthew G. Blain, Susan M. Clark, Melissa C. Revelle
Summary: Two novel techniques for in situ detection of RF breakdown in microfabricated surface ion traps were introduced. The experiments revealed that breakdown did not always occur immediately after increasing the voltage, but often happened minutes or even hours later.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Quantum Science & Technology
Changhyun Jung, Woojun Lee, Junho Jeong, Minjae Lee, Yunjae Park, Taehyun Kim, Dong-Il Dan Cho
Summary: The novel microfabricated ion trap chip successfully minimizes the impact of stray charges on trapped ions by utilizing a sloped loading slot design. Experimental results show a significant reduction in the magnitude of stray electric fields in the axial direction for the proposed ion trap chip compared to a previously reported ion trap chip.
QUANTUM SCIENCE AND TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Xianjing Zhou, Gerwin Koolstra, Xufeng Zhang, Ge Yang, Xu Han, Brennan Dizdar, Xinhao Li, Ralu Divan, Wei Guo, Kater W. Murch, David I. Schuster, Dafei Jin
Summary: This study presents an experimental realization of a qubit platform based on isolated single electrons trapped on an ultraclean solid neon surface. By integrating an electron trap in a circuit quantum electrodynamics architecture, strong coupling between a single electron and a single microwave photon is achieved. The results indicate that the electron-on-solid-neon qubit performs near the state of the art for a charge qubit.
Article
Physics, Multidisciplinary
Alto Osada, Atsushi Noguchi
Summary: Trapped-ion quantum technologies have been developed for decades and are used in various applications. Coherent manipulation of ions' oscillatory motions in an ion trap is crucial for quantum information processing. However, unwanted decoherence caused by fluctuating electric-field environment poses a challenge. Ablation loading with pulsed laser can reduce pollution and heat production. This paper demonstrates an efficient loading method for a single ion using laser ablation and successive photoionization, enabling deterministic single-ion loading and opening up new possibilities for functional ion-trap quantum devices.
JOURNAL OF PHYSICS COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Siyu Kang, Muhammad Shemyal Nisar, Yu Lu, Ning Chang, Yan Huang, Haibin Ni, Sergey M. M. Novikov, Yi Wang, Qiannan Cui, Xiangwei Zhao
Summary: This study introduces a new 3D biocompatible plasmonic tweezer for single living cell manipulation in solution. The key design involves a tapered tip with a three-layer surface structure, which enables reversible binding between functionalized surface and cell membrane through surface plasmon polaritons and thermally driven phase transition of the thermosensitive hydrogel. The 3D biocompatible plasmonic tweezer achieves selective capture, 3D pathway free transport, and position-controlled release of target cells, with excellent biocompatibility, low energy consumption, and high operational flexibility.
Article
Physics, Multidisciplinary
J. Stevens, D. Szombati, M. Maffei, C. Elouard, R. Assouly, N. Cottet, R. Dassonneville, Q. Ficheux, S. Zeppetzauer, A. Bienfait, A. N. Jordan, A. Auffeves, B. Huard
Summary: In this study, a quantum gate is implemented using a resonant drive field in a superconducting platform. The research shows that during the gate, the energy change in the drive field can exceed the energy that can be extracted by the qubit due to the measurement backaction.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Ming-Zhong Ai, Sai Li, Ran He, Zheng-Yuan Xue, Jin-Ming Cui, Yun-Feng Huang, Chuan-Feng Li, Guang-Can Guo
Summary: This study experimentally demonstrates the implementation of high-fidelity and robust holonomic quantum logic gates on trapped ions. The proposed method shows promise for fast and reliable quantum computation.
FUNDAMENTAL RESEARCH
(2022)
Article
Chemistry, Analytical
Seokjun Hong, Minjae Lee, Hongjin Cheon, Taehyun Kim, Dong-Il Dan Cho
Article
Multidisciplinary Sciences
Seokjun Hong, Minjae Lee, Yeong-Dae Kwon, Dong-il Dan Cho, Taehyun Kim
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2017)
Article
Engineering, Electrical & Electronic
Seokjun Hong, Yeongdae Kwon, Changhyun Jung, Minjae Lee, Taehyun Kim, Dong-il Dan Cho
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
(2018)
Article
Physics, Multidisciplinary
Rachel Noek, Taehyun Kim, Emily Mount, So-Young Baek, Peter Maunz, Jungsang Kim
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2013)
Article
Optics
Caleb Knoernschild, Taehyun Kim, Peter Maunz, Stephen G. Crain, Jungsang Kim
Article
Optics
Rachel Noek, Geert Vrijsen, Daniel Gaultney, Emily Mount, Taehyun Kim, Peter Maunz, Jungsang Kim
Article
Optics
Taehyun Kim, Peter Maunz, Jungsang Kim
Article
Physics, Applied
Moonjoo Lee, Minjae Lee, Seokjun Hong, Klemens Schuppert, Yeong-Dae Kwon, Taehyun Kim, Yves Colombe, Tracy E. Northup, Dong-Il Dan Cho, Rainer Blatt
PHYSICAL REVIEW APPLIED
(2019)
Article
Physics, Applied
Minjae Lee, Junho Jeong, Yunjae Park, Changhyun Jung, Taehyun Kim, Dong-il Cho
Summary: This paper introduces an ion shuttling method for a MEMS-fabricated surface ion trap, where calculated voltage sets are used to achieve successful ion transportation experiments.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2021)
Article
Optics
Junki Kim, Junho Jeong, Changhyun Jung, Minjae Lee, Yunjae Park, Dong-il Dan Cho, Taehyun Kim
Article
Chemistry, Multidisciplinary
Yunjae Park, Hyunseok Oh, Seungwoo Yoo, Taehyun Kim, Dongil Dan Cho
Summary: This study introduces an FPGA-based feedback controller for reducing RF signal amplitude fluctuations and improving control precision of axial secular frequency.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Analytical
Yunjae Park, Changhyun Jung, Myeongseok Seong, Minjae Lee, Dongil Dan Cho, Taehyun Kim
Summary: A new method utilizing a pre-calibrated voltage divider to measure the absolute amplitude of large RF voltages in ion traps is proposed, eliminating uncertainty caused by numerical simulations. Experimental validation showed the effectiveness of the method, making it applicable to most ion trap experiments.
Article
Quantum Science & Technology
Changhyun Jung, Woojun Lee, Junho Jeong, Minjae Lee, Yunjae Park, Taehyun Kim, Dong-Il Dan Cho
Summary: The novel microfabricated ion trap chip successfully minimizes the impact of stray charges on trapped ions by utilizing a sloped loading slot design. Experimental results show a significant reduction in the magnitude of stray electric fields in the axial direction for the proposed ion trap chip compared to a previously reported ion trap chip.
QUANTUM SCIENCE AND TECHNOLOGY
(2021)
Article
Physics, Applied
Changhyun Jung, Junho Jeong, Seungwoo Yoo, Taehyun Kim, Dongil Dan Cho
Summary: This paper presents a method for estimating the locations of laser-induced stray charges on surface-electrode ion traps. The electric potential changes caused by these stray charges are theoretically modeled, and the resulting shift in the trapped ion's secular frequency is derived. By measuring the secular frequency shift at multiple ion positions, the method can uniquely determine the locations of the stray charges. Experimental evaluation confirms the accuracy of the method, and it can be applied to characterizing stray charges and designing experiments to minimize their occurrence.
PHYSICAL REVIEW APPLIED
(2023)