Article
Physics, Multidisciplinary
Or Katz, Christopher Monroe
Summary: Trapped atomic ion crystals serve as a leading platform in quantum simulations of spin systems, where programmable and long-range spin-spin interactions are achieved through excitations of phonons. In this study, we propose a complementary approach using phonons in trapped-ion crystals to simulate bosonic systems, mediated by excitations of trapped-ion spins. This scheme allows for high programmability across a dense graph of bosonic couplings, utilizing long-lived collective phonon modes in a trapped-ion chain. It is well-suited for tackling challenging problems such as boson sampling and simulations of long-range bosonic and spin-boson Hamiltonians.
PHYSICAL REVIEW LETTERS
(2023)
Review
Physics, Multidisciplinary
C. Monroe, W. C. Campbell, L-M Duan, Z-X Gong, A. Gorshkov, P. W. Hess, R. Islam, K. Kim, N. M. Linke, G. Pagano, P. Richerme, C. Senko, N. Y. Yao
Summary: Laser-cooled and trapped atomic ions provide an ideal platform for simulating interacting quantum spin models. By using optical fields to modulate the ions' Coulomb interaction, long-range and tunable spin-spin interactions can be produced. This quantum simulator allows for the study of complex equilibrium states and dynamical processes in many-body interacting quantum systems.
REVIEWS OF MODERN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Ze Yu, Tao Bo, Bo Liu, Zhendong Fu, Huan Wang, Sheng Xu, Tianlong Xia, Shiliang Li, Sheng Meng, Miao Liu
Summary: In this paper, we demonstrate a data-driven approach to discover MgB2-like superconductors and their related compounds. Through experimental synthesis and measurements, we confirm their superconducting properties. This study highlights the feasibility of material discovery through data analysis.
Article
Multidisciplinary Sciences
Ardita Kilaj, Jia Wang, Patrik Stranak, Max Schwilk, Uxia Rivero, Lei Xu, O. Anatole von Lilienfeld, Jochen Kupper, Stefan Willitsch
Summary: Identifying a concerted or stepwise mechanism in Diels-Alder reactions is experimentally challenging. The authors demonstrate the coexistence of both mechanisms in the reaction of 2,3-dibromobuta-1,3-diene with propene ions, revealing an interesting mechanistic borderline case with a simultaneous competition of concerted and stepwise reaction pathways. This finding is rationalised by combining a conformationally controlled molecular beam with trapped ions and quantum-chemical calculations.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Condensed Matter
Saheli Banerjee, Alka B. Garg, Himanshu K. Poswal
Summary: This article reports the synthesis, characterization, and high pressure investigation of the technologically important rare earth orthotantalate EuTaO4. The researchers successfully synthesized a single phase polycrystalline sample of EuTaO4 using a solid state reaction method and investigated its structural and vibrational properties using synchrotron based x-ray powder diffraction and Raman spectroscopic techniques. The experimental findings show a reversible isostructural phase transition under high pressure, accompanied by an increase in coordination number.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Chemistry, Physical
Bing Yuan, Bruce G. Aitken, Sabyasachi Sen
Summary: A novel reentrant structural transition in a S-rich arsenic sulfide liquid is discovered, which has implications for the understanding of liquid-liquid transitions in glass-forming liquids. The investigation of this transition and its effect on viscosity provides insights into the thermodynamics of liquid-liquid transitions and has potential applications in the development of novel glass functionalities.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Jonas Hafner, Simone Benaglia, Filipe Richheimer, Marco Teuschel, Franz J. Maier, Artner Werner, Sebastian Wood, Daniel Platz, Michael Schneider, Klaudia Hradil, Fernando A. Castro, Ricardo Garcia, Ulrich Schmid
Summary: This study demonstrates that the semi-crystalline morphology of ferroelectric copolymer P(VDF-TrFE) significantly influences its Curie transition, involving changes in both crystal symmetry and morphology. Quantitative multi-scale characterizations reveal the complex nature of Curie transition in ferroelectric polymeric materials with an intermixture of crystalline and amorphous regions.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Condensed Matter
Spencer Schryver, Aneer Lamichhane
Summary: By examining the Gibbs free energies of CsPbBr3 using lattice dynamics simulation with quasi-harmonic and quasi-anharmonic phonons, this study investigates the polymorph stabilities and phase transitions. The existence of additional polymorphs is ruled out, and three well-known phase transitions are successfully replicated. The quasi harmonic approximation accurately predicts the phase transitions in CsPbBr3, and the intrinsic anharmonicity of the high temperature cubic phase gives it stability. The impact of temperature from symmetry breaking to the melting point is discussed and investigated.
SOLID STATE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Shitao Wu, Junyan Li, Yang Ling, Tu Sun, Yaqi Fan, Jihong Yu, Osamu Terasaki, Yanhang Ma
Summary: Phase transitions of materials involve significant changes in properties, and understanding the fundamental mechanisms requires tracing and identifying structural changes at the atomic scale. However, direct observation of three-dimensional structural transformations in single nanocrystals is rare. In this study, an in situ three-dimensional electron diffraction approach was developed for structural analysis of single nanocrystals, combining three-dimensional electron diffraction with in situ transmission electron microscopy. The feasibility of the method was demonstrated by investigating the metal-insulator transition of vanadium dioxide crystals, with the observation of local domains exhibiting four-fold rotation symmetry along the a-axis.
CHEMISTRY OF MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
T. Kanikirmizi, T. Izgi, N. Bayri, H. Gencer, V. S. Kolat, M. Pektas, S. Atalay
Summary: The influence of ruthenium doping on the magnetic and magnetocaloric properties of Pr0.67Ca0.33Mn1 - xRuxO3 (x = 0, 0.05, 0.1, 0.15, 0.2, 0.3, 0.5) compounds has been investigated. It was found that Ru doping destroyed the CO antiferromagnetic and induced ferromagnetism. The lattice parameters and magnetization measurements indicated the presence of mixed valence states of Ru3+ and Ru4+. The Curie temperature and magnetization values showed a slight increase until x = 0.15 before decreasing significantly with further Ru doping.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Physics, Multidisciplinary
Jim Skulte, Phatthamon Kongkhambut, Sahana Rao, Ludwig Mathey, Hans Kessler, Andreas Hemmerich, Jayson G. Cosme
Summary: We form a condensate in a dark state of momentum states in a pumped and shaken cavity-BEC system. The system consists of an ultracold quantum gas in a high-finesse cavity, pumped transversely by a phase-modulated laser. The dark state concept provides a general approach to efficiently prepare complex many-body states in an open quantum system, as demonstrated through time-of-flight and photon emission measurements.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Filippo M. Gambetta, Chi Zhang, Markus Hennrich, Igor Lesanovsky, Weibin Li
Summary: Conical intersections between electronic potential energy surfaces are crucial for studying nonadiabatic processes in the excited states of large molecules. By utilizing trapped Rydberg ions, these conical intersections can be engineered and their dynamics simulated on larger length and timescales, providing a highly controllable system. The presence of a conical intersection affects both nuclear and electronic dynamics, resulting in the inhibition of nuclear motion, and these effects can be monitored in real time through spectroscopic measurements.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Xinyu Zhang, Lidong Dai, Haiying Hu, Meiling Hong, Chuang Li
Summary: In this study, the vibrational and electrical transport properties of SnS2 were investigated under different conditions. The results showed that the coupled structural-electronic transition in SnS2 occurred at different pressures depending on the environment. Additionally, the theoretical calculations agreed well with the experimental results, indicating a decrease in the bandgap energy of SnS2 with increasing pressure.
Article
Chemistry, Multidisciplinary
Hsiao-Wen Chen, Chu-Yun Huang, Guo-Jiun Shu, Hsiang-Lin Liu
Summary: This study investigates the temperature-dependent optical properties of Delafossite CuFeO2, revealing anomalies in structural phase transitions, lattice dynamics, and electronic structure at 11 K. These findings highlight a profound connection between these factors and provide key information for device design and fabrication based on CuFeO2.
Article
Multidisciplinary Sciences
Zahid Hasan, M. Atikur Rahman, Dipta Kumar Das, Hasan Khaled Rouf
Summary: In this study, the structural, electronic, optical, mechanical, and thermodynamic properties of pure BaTiO3 and Ca doped BaTiO3 were compared using first-principles and density-functional-theory calculations. It was found that Ca doping changed the bandgap properties and improved the absorption ability of BaTiO3, making it a suitable candidate for photorefractive and optoelectronic devices.
SCIENTIFIC REPORTS
(2023)
Article
Quantum Science & Technology
Guin-Dar Lin, L. -M. Duan
QUANTUM INFORMATION PROCESSING
(2016)
Article
Chemistry, Physical
Guin-Dar Lin, Susanne F. Yelin
Article
Physics, Multidisciplinary
S. Korenblit, D. Kafri, W. C. Campbell, R. Islam, E. E. Edwards, Z-X Gong, G-D Lin, L-M Duan, J. Kim, K. Kim, C. Monroe
NEW JOURNAL OF PHYSICS
(2012)
Article
Optics
G. -D. Lin, S. F. Yelin
Article
Optics
Ching-Kit Chan, Guin-Dar Lin, Susanne F. Yelin, Mikhail D. Lukin
Article
Optics
T. H. Chang, G-D Lin, H. H. Jen
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2019)
Article
Optics
T. H. Chang, G-D Lin, H. H. Jen
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2020)
Article
Physics, Multidisciplinary
P. Y. Wen, K. -T. Lin, A. F. Kockum, B. Suri, H. Ian, J. C. Chen, S. Y. Mao, C. C. Chiu, P. Delsing, F. Nori, G. -D. Lin, I. -C. Hoi
PHYSICAL REVIEW LETTERS
(2019)
Article
Multidisciplinary Sciences
Kuan-Ting Lin, Ting Hsu, Chen-Yu Lee, Io-Chun Hoi, Guin-Dar Lin
SCIENTIFIC REPORTS
(2019)
Article
Physics, Multidisciplinary
Yu-Ching Shen, Guin-Dar Lin
NEW JOURNAL OF PHYSICS
(2020)
Article
Nanoscience & Nanotechnology
Wen-Han Png, Ting Hsu, Tze-Wei Liu, Guin-Dar Lin, Ming-Shien Chang
IEEE NANOTECHNOLOGY MAGAZINE
(2022)
Article
Chemistry, Multidisciplinary
Wei-Ju Lin, Yong Lu, Ping Yi Wen, Yu-Ting Cheng, Ching-Ping Lee, Kuan Ting Lin, Kuan Hsun Chiang, Ming Che Hsieh, Ching-Yeh Chen, Chin-Hsun Chien, Jia Jhan Lin, Jeng-Chung Chen, Yen Hsiang Lin, Chih-Sung Chuu, Franco Nori, Anton Frisk Kockum, Guin Dar Lin, Per Delsing, Io-Chun Hoi
Summary: This study demonstrates the efficient loading of coherent-state microwave photons with an optimal temporal waveform onto a single superconducting artificial atom. The loading efficiency of 94.2% is achieved by using a weak coherent state and an exponentially rising waveform that matches the decoherence time of the artificial atom. The high loading efficiency is attributed to time-reversal symmetry.
Article
Physics, Multidisciplinary
Chen-Yu Lee, Kuan-Ting Lin, Guin-Dar Lin
Summary: We propose a tunable phonon laser prototype with a large trapped ion array, where some of the ions are effectively pinned by optical tweezers, isolating a subset of ions that mimics an acoustic cavity. The cavity loss can be controlled by the tweezer strength and the number of pinned ions. By pumping the resonator with blue-sideband lasers, we investigate the lasing dynamics of the cavity motional modes and report mode competition and multistability in multimode resonators. This work provides a platform for acoustic quantum state manipulation, paving the way towards phonon-mediated quantum computing, communications, and metrology.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Optics
H. H. Jen, M-S Chang, G-D Lin, Y-C Chen
Article
Optics
Yen-Yu Lai, Guin-Dar Lin, Jason Twamley, Hsi-Sheng Goan
