Article
Physics, Applied
Yuan Li, He Ma, Yu Wang, Jun Ding, Limei Qi, Yulan Fu, Ran Ning, Lu Rong, Dayong Wang, Xinping Zhang
Summary: With the growing need for broadband wireless communication, high-resolution radar, security inspection, and biological analysis, terahertz (THz) technology has made significant progress in recent years. This progress has been possible due to the development of various THz functional devices, with metasurface being widely applied in these devices. However, constructing flexible THz metasurface devices remains a challenge due to the lack of flexibility in traditional semiconductor and metal materials. In this study, a two-dimensional material called MXene was used to create flexible metasurfaces with frequency filtering and polarization functions. These metasurfaces, combined with vanadium dioxide, showed excellent amplitude modulation performance under electrical stimulation. The flexibility and high integration of this active metasurface make it useful in THz imaging and sensing systems.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Zhuang Ren, Jinyi Xu, Jinming Liu, Bolin Li, Chun Zhou, Zhigao Sheng
Summary: This article demonstrates an active and smart electro-optic terahertz modulator based on strongly correlated electron oxide vanadium dioxide. By applying an external electric field, the transmission, reflection, absorption, and phase of terahertz waves can be efficiently modulated, with the ability to stabilize the antireflection condition.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Tingting Yuan, Jingwen Wu, Xujun Xu, Jianjun Liu, Yong Du
Summary: Based on the controllable conductivity of photosensitive semiconductors and the phase transition characteristic of vanadium oxide, a metamaterial absorber with switchable single-band and dual-band absorption in the terahertz region is designed. By adjusting the external pump light power and the conductivity of gallium arsenide and vanadium oxide, the absorptivity can be increased to above 99%. The designed absorber can be switched from triple-band to single-band absorption by changing the conductivity state of gallium arsenide and vanadium oxide. The absorber also exhibits excellent absorption characteristics for both TE and TM fields in a wide-angle incidence range.
RESULTS IN PHYSICS
(2023)
Article
Optics
Huan Liu, Wen Chen, Jing Ma, Shi-Yang Zhang, Hai-Ling He, Ya-Xian Fan, Zhi-Yong Tao
Summary: We present a method for actively controlling terahertz (THz) waves using a hybrid vanadium dioxide (VO2) periodic corrugated waveguide. By utilizing VO2's unique insulator-metal transition characteristic, our waveguide allows for mode switching through changes in the conductivity of embedded VO2 pads. This VO2-embedded hybrid THz waveguide has practical applications in THz modulators, sensors, and optical switches, providing an innovative technique for manipulating THz waves.
Article
Materials Science, Multidisciplinary
Chirag Saharan, Pawan S. S. Rana, Manish Kumar
Summary: In this study, the integration of an aluminum doped zinc oxide (AZO) anti-reflecting layer with vanadium dioxide (VO2) layer successfully improved the visible light transmission of thermochromic VO2. The experimental results demonstrated that the application of AZO/VO2 bilayer thin film for smart windows could achieve better visible light transmittance, making it a potential candidate for large-scale commercial use.
Article
Chemistry, Multidisciplinary
Xiao Wang, Detlef Rogalla, Aleksander Kostka, Alfred Ludwig
Summary: A thin-film materials library was fabricated in the V-Bi-O system using reactive co-sputtering. It was found that the solubility limit of Bi in VO2 is approximately 0.29 at%, and the phase transformation temperatures of VO2:Bi as well as the V5+/V4+ ratio are significantly affected by the Bi content.
Article
Materials Science, Multidisciplinary
Manish Kumar, Sunita Rani, Hyun Hwi Lee
Summary: A thin film of thermochromic VO2 was prepared on an m-Al2O3 substrate using RF magnetron sputtering. The epitaxial growth of monoclinic M-1 phase of VO2 on m-Al2O3 substrate was confirmed by synchrotron XRD measurements. The temperature-dependent XRD and electrical resistance measurements showed reversible metal-to-insulator transition at approximately 68°C.
Review
Materials Science, Multidisciplinary
Syed Imran Hussain Shah, Sungjoon Lim
Summary: Origami technology shows great potential for developing antennas in the microwave and terahertz regime, but faces challenges related to stability, robustness, and self-deployment. Solutions are needed to design more practical deployable origami antennas. Nanoscale origami antennas for terahertz and optical applications are also promising, but issues like high DNA cost and error rates in fabrication need to be addressed for advancement.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Physical
Tao Liu, Helei Dong, Hanyu Wang, Yanyan Niu, Xiangpeng Li, Lei Zhang, Jijun Xiong, Qiulin Tan
Summary: In this study, Pt-ITO thin-film thermocouples were fabricated using pulsed laser deposition on alumina ceramic substrates, and the microstructure and electrical properties were investigated. The results showed that the ITO thin films had a new type of nano cone structure, with a resistivity of only 2.76 x 10-4 omega center dot cm at a substrate temperature of 600 degrees C. The Pt-ITO thin-film thermocouples could work stably in the temperature range of 25-1300 degrees C and for a short time at 1400 degrees C. The average Seebeck coefficient was more than 50 mu V/degrees C at 1300 degrees C, and the response time was less than 435 mu s. These findings provide important insights for the potential application of Pt-ITO TFTCs in high-temperature measurement, and confirm the feasibility of preparing superior thermoelectric semiconductor materials using pulsed laser deposition.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zhen Xu, Guofang Qin, Ayrton A. Bernussi, Zhaoyang Fan
Summary: The metal-insulator transition (MIT) and infrared modulation characteristics of one-step deposited VO2 thin films on FTO/glass substrates were investigated, demonstrating the dynamic tuning of infrared transmission or abrupt infrared switching through voltage control. The results suggest that voltage driven VO2/FTO/glass systems could be promising candidates for smart window and infrared switching applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Bharathi Rajeswaran, Arun M. Umarji
Summary: This study compares the effects of two synthesis methods, Chemical Vapor Deposition (CVD) and Ultrasonic Nebulized Spray Pyrolysis of Aqueous Combustion Mixture (UNSPACM), on the Semiconductor-Metal Transition (SMT) characteristics of VO2 thin films. The SMT characteristics of the films were measured electrically and optically. The CVD films showed lower resistance ratio and SMT strength, while the films synthesized via UNSPACM had rougher surfaces. The observed behavior is attributed to morphology and off-stoichiometry resulting from the deposition process.
Article
Materials Science, Multidisciplinary
Manish Kumar, Saurabh Singh, Weon Cheol Lim, Keun Hwa Chae, Hyun Hwi Lee
Summary: N+ ion implantation induces modifications in the structural and electronic properties of VO2 films. Lower fluence of N+ ions shifts the phase transition temperatures of VO2 films towards room temperature, while higher fluence of N+ ions significantly alters the crystalline structure of VO2 thin film, exhibiting metallic behavior.
Article
Physics, Applied
Hong Wang, Yuting Zhang, Fangrong Hu, Mingzhu Jiang, Longhui Zhang, Wentao Zhang, Jiaguang Han
Summary: In this paper, an active dual-control electromagnetically induced transparency (EIT) analog is realized by using vanadium dioxide (VO2) metasurface on a sapphire substrate. The insulator-to-metal-transition (IMT) of VO2 can result in the reconstruction of the metasurface and control the EIT resonance when electrically stimulated. Experimental results show a modulation depth of 87.7% and a group delay of 2.7 ps at the central frequency of 0.56THz. This work paves a way for the development of THz modulators, switches, and slow light devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Charles Otieno Ogolla, Yannik Loth, Tobias Haeger, Cedric Kreusel, Manuel Runkel, Thomas Riedl, Benjamin Butz, Anna Katharina Wigger, Stephan Schaeffer, Peter Haring Bolivar
Summary: In this study, THz-sSNOM was used for nanoscale imaging of CsPbBr3 thin films, and the local THz nanoscale conductivity was derived using a scattering model. The analysis of the obtained signals confirmed the presence of halide vacancies (VBr) and Pb-Pb bonds at the CsPbBr3 grain boundaries, which resulted in charge carrier trapping and nonradiative recombination. This study establishes THz-sSNOM as a powerful analysis platform for thin-film semiconductors like LHPs.
Article
Optics
Abdulrahman Mesgin Balow, Mehdi Khatir, Nasrin Amiri
Summary: A novel plasmonic nano-antenna array with stepped strips at the edge of contact electrodes is proposed for improved performance in optical-to-terahertz conversion efficiency. Simulations show that this photoconductive antenna can efficiently transmit light to LT GaAs substrate under an optical pump power of 50 mW without any reflection, generating an optical current of 215 nA and achieving broadband terahertz detection over the 0.1-8 THz frequency range with significant improvement over previous structures.
Article
Multidisciplinary Sciences
Alexander Keesling, Ahmed Omran, Harry Levine, Hannes Bernien, Hannes Pichler, Soonwon Choi, Rhine Samajdar, Sylvain Schwartz, Pietro Silvi, Subir Sachdev, Peter Zoller, Manuel Endres, Markus Greiner, Vladan Vuletic, Mikhail D. Lukin
Article
Optics
Donggyu Kim, Alexander Keesling, Ahmed Omran, Harry Levine, Hannes Bernien, Markus Greiner, Mikhail D. Lukin, Dirk R. Englund
Article
Multidisciplinary Sciences
A. Omran, H. Levine, A. Keesling, G. Semeghini, T. T. Wang, S. Ebadi, H. Bernien, A. S. Zibrov, H. Pichler, S. Choi, J. Cui, M. Rossignolo, P. Rembold, S. Montangero, T. Calarco, M. Endres, M. Greiner, V. Vuletic, M. D. Lukin
Article
Physics, Multidisciplinary
Harry Levine, Alexander Keesling, Giulia Semeghini, Ahmed Omran, Tout T. Wang, Sepehr Ebadi, Hannes Bernien, Markus Greiner, Vladan Vuletic, Hannes Pichler, Mikhail D. Lukin
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
Giacomo Torlai, Brian Timar, Evert P. L. van Nieuwenburg, Harry Levine, Ahmed Omran, Alexander Keesling, Hannes Bernien, Markus Greiner, Vladan Vuletic, Mikhail D. Lukin, Roger G. Melko, Manuel Endres
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
Polnop Samutpraphoot, Tamara Dordevic, Paloma L. Ocola, Hannes Bernien, Crystal Senko, Vladan Vuletic, Mikhail D. Lukin
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
Shankar G. Menon, Kevin Singh, Johannes Borregaard, Hannes Bernien
NEW JOURNAL OF PHYSICS
(2020)
Article
Quantum Science & Technology
Clarice D. Aiello, D. D. Awschalom, Hannes Bernien, Tina Brower, Kenneth R. Brown, Todd A. Brun, Justin R. Caram, Eric Chitambar, Rosa Di Felice, Karina Montilla Edmonds, Michael F. J. Fox, Stephan Haas, Alexander W. Holleitner, Eric R. Hudson, Jeffrey H. Hunt, Robert Joynt, Scott Koziol, M. Larsen, H. J. Lewandowski, Doug T. McClure, Jens Palsberg, Gina Passante, Kristen L. Pudenz, Christopher J. K. Richardson, Jessica L. Rosenberg, R. S. Ross, Mark Saffman, M. Singh, David W. Steuerman, Chad Stark, Jos Thijssen, A. Nick Vamivakas, James D. Whitfield, Benjamin M. Zwickl
Summary: Interest in establishing dedicated quantum information science and engineering (QISE) education programs has significantly increased in recent years. These programs are complex, resource-intensive, and require collaboration with a variety of stakeholders. This manuscript outlines the status of eighteen post-secondary education programs in QISE, provides guidance for developing new programs, and encourages the development of a comprehensive strategic plan to maximize investments in QISE.
QUANTUM SCIENCE AND TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Tamara Dordevic, Polnop Samutpraphoot, Paloma L. Ocola, Hannes Bernien, Brandon Grinkemeyer, Ivana Dimitrova, Vladan Vuletic, Mikhail D. Lukin
Summary: The study demonstrates an efficient quantum optical interface using two atoms in individually controlled optical tweezers, achieving entanglement generation, fast nondestructive readout, and full quantum control. By using dynamical decoupling, the entangled state was successfully verified, potentially enabling an integrated optical interface for atomic quantum processors.
Article
Physics, Multidisciplinary
Kevin Singh, Shraddha Anand, Andrew Pocklington, Jordan T. Kemp, Hannes Bernien
Summary: This study introduces a dual-element atom array with individual control of single rubidium and cesium atoms. Continuous operation mode is achieved by continuously reloading one atomic element while maintaining an array of the other. These results provide possibilities for auxiliary-qubit-assisted quantum protocols and continuously operating quantum processors.
Article
Multidisciplinary Sciences
K. Singh, C. E. Bradley, S. Anand, V. Ramesh, R. White, H. Bernien
Summary: Scaling up quantum processors is challenging due to the errors involved. One proposed solution involves using auxiliary spectator qubits as probes of noise to enable real-time correction of data qubit errors. In this study, using cesium spectator qubits, we corrected phase errors on rubidium data qubits and suppressed correlated errors within the execution of the quantum circuit. This protocol establishes important tools for scaling neutral-atom quantum processors.
Article
Physics, Multidisciplinary
William Huie, Shankar G. Menon, Hannes Bernien, Jacob P. Covey
Summary: This study introduces a new platform for quantum network nodes, utilizing large atom arrays interfaced with telecommunication-band photons to enhance entanglement rate between nodes and achieve high-fidelity quantum gate operations. By using intermediate nodes as quantum repeaters, entanglement distribution over a distance of 1500 km is demonstrated, laying out a blueprint for a transcontinental quantum network.
PHYSICAL REVIEW RESEARCH
(2021)
Proceedings Paper
Computer Science, Hardware & Architecture
Jonathan M. Baker, Andrew Litteken, Casey Duckering, Henry Hoffmann, Hannes Bernien, Frederic T. Chong
Summary: Quantum technologies face challenges in scaling due to hardware limitations, leading to a reliance on heavy compiler optimization for software approaches. Exploring new technologies, such as Neutral Atom (NA) systems, presents advantages but also drawbacks that require enhanced compiler methods. Resilience against atom loss is crucial for reducing total computation time.
2021 ACM/IEEE 48TH ANNUAL INTERNATIONAL SYMPOSIUM ON COMPUTER ARCHITECTURE (ISCA 2021)
(2021)
Article
Quantum Science & Technology
David Awschalom, Karl K. Berggren, Hannes Bernien, Sunil Bhave, Lincoln D. Carr, Paul Davids, Sophia E. Economou, Dirk Englund, Andrei Faraon, Martin Fejer, Saikat Guha, Martin Gustafsson, Evelyn Hu, Liang Jiang, Jungsang Kim, Boris Korzh, Prem Kumar, Paul G. Kwiat, Marko Loncar, Mikhail D. Lukin, David A. B. Miller, Christopher Monroe, Sae Woo Nam, Prineha Narang, Jason S. Orcutt, Michael G. Raymer, Amir H. Safavi-Naeini, Maria Spiropulu, Kartik Srinivasan, Shuo Sun, Jelena Vuckovic, Edo Waks, Ronald Walsworth, Andrew M. Weiner, Zheshen Zhang
Summary: Quantum interconnects (QuICs) face special challenges in transferring fragile quantum states, and the diversity of QIT platforms in different fields presents additional challenges for building the quantum internet. As quantum systems scale up, the quantum interconnect bottleneck emerges as a major challenge for QIT.
Article
Materials Science, Multidisciplinary
T. J. Huffman, D. J. Lahneman, S. L. Wang, T. Slusar, Bong-Jun Kim, Hyun-Tak Kim, M. M. Qazilbash
