Article
Physics, Applied
Yesenia Angelica Garcia Jomaso, David Ley Dominguez, Francisco Javier Pena Espinoza, Elizabeth Mendoza Sandoval, Arturo Reyes Almanza, Naser Qureshi, Cesar Leonardo Ordonez-Romero, Giuseppe Pirruccio
Summary: The use of metasurfaces to engineer the response of magnetic materials is demonstrated in this study. One- and two-dimensional magnonic crystals with arbitrary symmetry are fabricated to engineer the amplitude-frequency characteristic of magnetostatic surface spin waves in a magnetic material. The technique involves the microablation of the sample surface using focused femtosecond laser pulses. Control over the shape, size, symmetry, and lattice parameter of the crystal are achieved by raster scanning the incident laser spot on the sample surface. The interaction of the spin waves with different lattice types is revealed by the measured transmission characteristics.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Applied
Ryo Iguchi, Vitaliy I. I. Vasyuchka, Burkard Hillebrands, Ken-ichi Uchida
Summary: The spin-wave dynamics in a one-dimensional magnonic crystal (MC) with respect to heat radiation due to damping of the spin waves is investigated. The heat induced by the excitation and propagation of spin waves is measured using lock-in thermography (LIT) technique. The frequency or wave number of the spin waves notably affects the temperature distribution induced by the spin-wave excitation.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
Nikolai Kuznetsov, Huajun Qin, Lukas Flajsman, Sebastiaan van Dijken
Summary: This study reports experimental results on spin-wave propagation, transmission gap tuning, and mode conversion in straight, curved, and Y-shaped yttrium iron garnet waveguides with submicrometer-wide airgrooves. The study observes forbidden frequency gaps in straight waveguides and narrowing of the gaps in curved and Y-shaped waveguides. The findings show that the spin-wave transmission signal is strongly suppressed inside the gaps and remains high at allowed frequencies for all waveguide types.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Multidisciplinary Sciences
Justyna Rychly-Gruszecka, Jakob Walowski, Christian Denker, Tobias Tubandt, Markus Muenzenberg, Jaroslaw W. Klos
Summary: In this study, the influence of geometrical parameters on the fundamental spin-wave mode in planar 1D magnonic crystals is investigated. The results show that the width of stripes and the width of gaps between them can affect the spin-wave frequencies by confining the spin waves inside the stripes and freeing the spin waves to a different extent on the edges of stripes. The frequency of the fundamental mode can be tuned by adjusting the geometrical parameters.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Electrical & Electronic
Abdulqader Nael Mahmoud, Frederic Vanderveken, Christoph Adelmann, Florin Ciubotaru, Sorin Cotofana, Said Hamdioui
Summary: This study introduces a novel conversion-free SW gate cascading scheme that achieves SW amplitude normalization through a directional coupler, reducing energy consumption and enabling the design of simple circuits and SW multipliers. The results show that the proposed approach offers higher energy efficiency compared to conventional methods and 16nm CMOS designs.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2021)
Article
Materials Science, Multidisciplinary
Jingyuan Zhou, Mateusz Zelent, Zhaochu Luo, Valerio Scagnoli, Maciej Krawczyk, Laura J. Heyderman, Susmita Saha
Summary: This study reports on the formation of magnetostatic modes in an artificial magnetic structure, and reveals that the mode formation is related to the geometric scaling of the fractal structure. Experimental results show that the evolution of precessional motion is linked to the progression in geometric structures and results in a modification of the demagnetizing field. Additionally, a scaled spatial distribution of modes at the ferromagnetic resonance frequency has been observed. These findings provide guiding principles for the use of magnetic fractals in magnonics applications.
Article
Physics, Applied
Gianluca Gubbiotti, Alexandr Sadovnikov, Evgeny Beginin, Sergey Nikitov, Danny Wan, Anshul Gupta, Shreya Kundu, Giacomo Talmelli, Robert Carpenter, Inge Asselberghs, Iuliana P. Radu, Christoph Adelmann, Florin Ciubotaru
Summary: This research investigates the characteristics of spin waves in vertical meander-shaped Co40Fe40B20 thin films using Brillouin-light-scattering spectroscopy. The study reveals the presence of frequency band gaps at specific wave numbers, which can be controlled by changing the geometrical parameters of the film.
PHYSICAL REVIEW APPLIED
(2021)
Article
Materials Science, Multidisciplinary
Ankang Liu, Alexander M. Finkel'stein
Summary: The magnonic crystal can generate a band gap using alternating current (ac) instead of direct current (dc), with the size of the gap depending on the frequency of the ac modulation and the dispersion of the spin wave. The resulting gap in the ac magnonic crystal is half the size of the one in the dc magnonic crystal with the same modulation amplitude.
Article
Materials Science, Multidisciplinary
K. G. Fripp, A. V. Shytov, V. V. Kruglyak
Summary: The study reveals strong chiral scattering of spin waves from mesoscale chiral magnonic resonators, which can be used as efficient spin-wave diodes and phase shifters. These applications are feasible when using available ferromagnetic materials for the resonators.
Article
Physics, Applied
Masashi Iwaba, Koji Sekiguchi
Summary: By designing a dynamic magnonic crystal, the control of spin-wave propagation in a YIG waveguide was achieved, enabling the switching of spin waves and offering a promising method for carrier-flow control in the construction of integrated magnonic circuits.
APPLIED PHYSICS EXPRESS
(2021)
Article
Physics, Applied
S. Hwang, Seungha Yoon, B. R. Kim, S. H. Han, B. K. Cho
Summary: The study examined the characteristics of parametric spin-wave pumping in three rectangular permalloy blocks with different in-plane aspect ratios. Micro-Brillouin light scattering spectroscopy was used to detect the intrinsic properties of the excited spin waves under various excitation conditions. Based on theoretical dispersion relations and BLS intensity, a parametric spin wave with a frequency of fsw=5.6 GHz was identified.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
S. A. Odintsov, S. E. Sheshukova, S. A. Nikitov, E. H. Lock, E. N. Beginin, A. V. Sadovnikov
Summary: This study presents the frequency-selective spin-wave propagation in a magnonic waveguide composed of two layers with different magnetization saturation. It demonstrates the multimode spin-wave propagation and shows strong nonreciprocity behavior.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Physics, Applied
Takashi Manago, Kanta Fujii, Kenji Kasahara, Kazuyuki Nakayama
Summary: The characteristics of spin waves propagating in Fibonacci magnonic quasi-crystals were investigated in micromagnetic simulations. It was found that these spin waves have a period of 1/3 of the characteristic Fibonacci sequence length and form mini band gaps reflected by MQCs. The properties of spin waves in MQCs depend on the propagation direction, leading to complex nonreciprocity characteristics. The study suggests that this could provide a new way to control nonreciprocity.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Ruoning Li, Na Xue, Xue Zhang, Mingjun Zhong, Yifan Wang, Na Li, Hao Tang, Shimin Hou, Yongfeng Wang
Summary: This study focuses on the spin excitation of magnetic Fe atoms in various Sierpin'ski triangles (STs) with different organic ligands. The results show that spin excitation of Fe atoms is observed in spectra when using certain ligands, paving the way for further research on tuning spin excitation using different functional groups.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
V. A. Gubanov, V. V. Kruglyak, S. E. Sheshukova, V. D. Bessonov, S. A. Nikitov, A. Sadovnikov
Summary: We investigate the propagation of spin waves along a magnonic waveguide by inducing a local decrease in magnetization using a focused laser spot. Utilizing the phase-sensitive Brillouin light scattering technique, we image how the spin waves propagate along the waveguide with a local heat landscape. Experimental results demonstrate frequency-selective signal propagation along the waveguide. Micromagnetic simulations reveal changes in intermodal interference after the heated area. The proposed method of reconfiguring the magnetization landscape has potential applications in magnonic devices with frequency-selective spin wave transport.
Article
Quantum Science & Technology
Logan E. Hillberry, Matthew T. Jones, David L. Vargas, Patrick Ra, Nicole Yunger Halpern, Ning Bao, Simone Notarnicola, Simone Montangero, Lincoln D. Carr
Summary: Cellular automata are classical bits that interact and display diverse emergent behaviors; quantum cellular automata (QCA) can exhibit complexity by following 'Goldilocks rules' that balance activity and stasis. These rules generate robust dynamical features, network structure, and persistent entropy fluctuations.
QUANTUM SCIENCE AND TECHNOLOGY
(2021)
Article
Education, Scientific Disciplines
Abraham Asfaw, Alexandre Blais, Kenneth R. Brown, Jonathan Candelaria, Christopher Cantwell, Lincoln D. Carr, Joshua Combes, Dripto M. Debroy, John M. Donohue, Sophia E. Economou, Emily Edwards, Michael F. J. Fox, Steven M. Girvin, Alan Ho, Hilary M. Hurst, Zubin Jacob, Blake R. Johnson, Ezekiel Johnston-Halperin, Robert Joynt, Eliot Kapit, Judith Klein-Seetharaman, Martin Laforest, H. J. Lewandowski, Theresa W. Lynn, Corey Rae H. McRae, Celia Merzbacher, Spyridon Michalakis, Prineha Narang, William D. Oliver, Jens Palsberg, David P. Pappas, Michael G. Raymer, David J. Reilly, Mark Saffman, Thomas A. Searles, Jeffrey H. Shapiro, Chandralekha Singh
Summary: The paper provides a roadmap for constructing a quantum engineering education program to meet the workforce needs of the United States and international community. Through a workshop and drawing on best practices, the researchers make specific findings and recommendations, including the design of a first quantum engineering course accessible to all STEM students and the education and training methods for producing quantum-proficient engineers.
IEEE TRANSACTIONS ON EDUCATION
(2022)
Article
Physics, Multidisciplinary
Justin Q. Anderson, P. A. Praveen Janantha, Diego A. Alcala, Mingzhong Wu, Lincoln D. Carr
Summary: We report the experimental verification of cubic-quintic complex Ginzburg-Landau (CQCGL) physics in a single driven, damped system. Different types of complex dynamical behavior and pattern formation are observed, including periodic breathing, complex recurrence, spontaneous spatial shifting, and intermittency. These behaviors are observed in self-generated spin wave envelopes circulating within a dispersive, nonlinear yttrium iron garnet waveguide. The stable and long-lasting nature of these behaviors makes them promising for technological applications.
NEW JOURNAL OF PHYSICS
(2022)
Article
Optics
Zachary C. Coleman, Lincoln D. Carr
Summary: We obtained the exact analytical solution for a continuously driven qutrit in different configurations, and calculated the linear susceptibility in each system. We identified regimes of transient gain without inversion and identified parameter values for specific effects such as superluminal, vanishing, and negative group velocity for the probe field.
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2022)
Article
Physics, Multidisciplinary
Mark J. Ablowitz, Joel B. Been, Lincoln D. Carr
Summary: This article presents a new class of integrable fractional nonlinear evolution equations that describe dispersive transport in fractional media. These equations can be constructed from nonlinear integrable equations using a widely generalizable mathematical process and have been applied to fractional extensions of the Korteweg-deVries and nonlinear Schrodinger equations.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Mark J. Ablowitz, Joel B. Been, Lincoln D. Carr
Summary: The inverse scattering transform allows explicit construction of solutions to many physically significant nonlinear wave equations, and can be extended to fractional nonlinear evolution equations characterized by anomalous dispersion. Using symmetries present in the linear scattering problem, these equations can be connected with a scalar family of nonlinear evolution equations, of which fractional mKdV, fsineG, and fsinhG are special cases.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Article
Multidisciplinary Sciences
Eric B. Jones, Logan E. Hillberry, Matthew T. Jones, Mina Fasihi, Pedram Roushan, Zhang Jiang, Alan Ho, Charles Neill, Eric Ostby, Peter Graf, Eliot Kapit, Lincoln D. Carr
Summary: This study demonstrates the implementation of Quantum Cellular Automata (QCA) on a digital quantum processor, simulating a one-dimensional Goldilocks rule on chains of superconducting qubits. The results show the formation of small-world mutual information networks and provide measurements of population dynamics and complex network measures. These findings contribute to the understanding of complexity in quantum systems.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Mark J. Ablowitz, Joel B. Been, Lincoln D. Carr
Summary: In this manuscript, a new fractional integrable discrete nonlinear Schrodinger equation is discovered and linearized. Special soliton solutions are found and compared with the closely related fractional averaged discrete nonlinear Schrodinger equation, showing similar behavior for positive fractional parameter and small amplitude waves.
Article
Education & Educational Research
Nathan Crossette, Lincoln D. Carr, Bethany R. Wilcox
Summary: Social network analysis (SNA) was used to quantitatively study student collaboration in three courses during the COVID-19 pandemic. Results varied widely between the courses, with strong correlations between centrality measures and performance in the remote course at the Colorado School of Mines, weaker correlations in the two hybrid courses at the University of Colorado Boulder, and nearly no correlations in one of the courses. The study also investigated the effect of missing nodes on correlations and found that the measured correlations were not spurious.
PHYSICAL REVIEW PHYSICS EDUCATION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Arya Dhar, Daniel Jaschke, Lincoln D. Carr
Summary: The bilinear-biquadratic model is a promising candidate for studying spin-1 systems and designing quantum simulators based on its underlying Hamiltonian. It contains various phases, including the valuable and exotic Haldane phase. We investigate the Kibble-Zurek physics of linear quenches into the Haldane phase and propose ideal quench protocols to minimize defects in the final state.
Article
Mathematics, Interdisciplinary Applications
Bhuvanesh Sundar, Mattia Walschaers, Valentina Parigi, Lincoln D. Carr
Summary: The study focuses on investigating the ground states of spin models defined on networks and their responses to network attacks, quantifying complexity and responses through calculating distributions of network measures. The emergent networks in the ground state do not meet the usual criteria for complexity, with attacks rescaling properties by a constant factor. The findings suggest that complex spin networks are not more robust to attacks than non-complex spin networks, contrary to classical networks.
JOURNAL OF PHYSICS-COMPLEXITY
(2021)
Article
Quantum Science & Technology
Yuri Alexeev, Dave Bacon, Kenneth R. Brown, Robert Calderbank, Lincoln D. Carr, Frederic T. Chong, Brian DeMarco, Dirk Englund, Edward Farhi, Bill Fefferman, Alexey Gorshkov, Andrew Houck, Jungsang Kim, Shelby Kimmel, Michael Lange, Seth Lloyd, Mikhail D. Lukin, Dmitri Maslov, Peter Maunz, Christopher Monroe, John Preskill, Martin Roetteler, Martin J. Savage, Jeff Thompson
Summary: The development of quantum computers and the discovery of scientific applications should be considered together by co-designing full-stack quantum computer systems and applications to accelerate their development. In the next 2-10 years, quantum computers for science face significant challenges and opportunities.
Article
Quantum Science & Technology
Ehud Altman, Kenneth R. Brown, Giuseppe Carleo, Lincoln D. Carr, Eugene Demler, Cheng Chin, Brian DeMarco, Sophia E. Economou, Mark A. Eriksson, Kai-Mei C. Fu, Markus Greiner, Kaden R. A. Hazzard, Randall G. Hulet, Alicia J. Kollar, Benjamin L. Lev, Mikhail D. Lukin, Ruichao Ma, Xiao Mi, Shashank Misra, Christopher Monroe, Kater Murch, Zaira Nazario, Kang-Kuen Ni, Andrew C. Potter, Pedram Roushan, Mark Saffman, Monika Schleier-Smith, Irfan Siddiqi, Raymond Simmonds, Meenakshi Singh, I. B. Spielman, Kristan Temme, David S. Weiss, Jelena Vuckovic, Vladan Vuletic, Jun Ye, Martin Zwierlein
Summary: Quantum simulators are a rapidly developing technology that utilizes entanglement and many-particle behavior to explore and solve scientific, engineering, and computational problems. With over 300 quantum simulators in operation worldwide, recent advances promise a golden age of quantum simulators that have the potential to address societal challenges and draw from various fields of study. Investment in a national quantum simulator program is seen as crucial to advancing this field and realizing practical applications of quantum machines.
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
Physics, Multidisciplinary
Alexey B. Ustinov, Andrei Drozdovskii, Andrey A. Nikitin, Alexander A. Semenov, Dmytro A. Bozhko, Alexander A. Serga, Burkard Hillebrands, Erkki Lahderanta, Boris A. Kalinikos
COMMUNICATIONS PHYSICS
(2019)