Review
Multidisciplinary Sciences
C. Gonzalez-Ballestero, M. Aspelmeyer, L. Novotny, R. Quidant, O. Romero-Isart
Summary: The control and manipulation of levitated nano- and micro-objects in vacuum, utilizing scientific achievements in various disciplines, offer great potential for both scientific research and technological applications. Recent experimental successes, such as achieving motional ground-state cooling of optically levitated nanoparticles, have opened up attractive research directions ranging from fundamental quantum physics to commercial sensors. Levitodynamics, as a multidisciplinary research area, is devoted to understanding, controlling, and utilizing levitated nano- and micro-objects in vacuum.
Article
Materials Science, Multidisciplinary
Sangeet S. Kumar, Meera M. Parish, Jesper Levinsen
Summary: We theoretically investigate the scenario of a semiconductor quantum well in a microcavity, where optically excited electron-hole pairs can form exciton polaritons via the exchange of microcavity photons rather than Coulomb interactions. Using a diagrammatic theory, we determine the spectral response of the semiconductor microcavity and obtain the conditions under which an exciton is bound by photon exchange. Our results are in good agreement with a recent experiment on doped quantum wells.
Article
Physics, Multidisciplinary
Manoj Kumar Nandi, Sarika Maitra Bhattacharyya
Summary: The study introduces a new measure of the structure of liquid, softness of mean-field potential, which is sensitive to small changes. It correlates this softness with supercooled liquid dynamics and predicts universal behaviors such as linear proportionality with temperature and inverse proportionality with activation barrier. The research shows a strong dependence of fragility liquid dynamics on softness, while strong liquids have weaker dependence on softness.
PHYSICAL REVIEW LETTERS
(2021)
Article
Immunology
Casper Alabanza, Victor Gavrilov, Taylor Scott, Rong Sylvie Yang, Daniel B. Gowetski, Jason G. Gall, Q. Paula Lei
Summary: An enzyme linked immunosorbent assay (ELISA) method was developed to analyze the assembly of a tetravalent mosaic influenza nanoparticle (NP) vaccine, Flumos-v1. The optimized zwittergent treatment was used to fully dissociate the influenza NP and quantify the hemagglutinin trimers.
Article
Chemistry, Multidisciplinary
Shi-Jie Hou, Yi-Fan Yang, Zhong-hua Cui, Lorenz S. Cederbaum
Summary: Anions play an important role in chemistry, but their excited states are generally unstable. This study focused on two promising prototype candidates, Li@C-12 and Li@C-20 anions, and found stable doubly-excited states in addition to stable singly-excited states. The discovery provides insights into designing anions with stable valence singly- and doubly-excited states, and potential applications are mentioned.
Article
Physics, Multidisciplinary
Adam Overvig, Nanfang Yu, Andrea Alu
Summary: The study introduces quasi-bound states in the continuum (QBICs) born of chiral perturbations, encoding arbitrary elliptical polarization states and enabling geometric phase engineering. Metasurfaces with ultrasharp spectral features are designed as a result, shaping impinging wave fronts with near-unity efficiency. The findings extend Fano resonances beyond their conventional limits, opening opportunities for nanophotonics, classical and quantum optics, and acoustics.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
M. O. Brown, S. R. Muleady, W. J. Dworschack, R. J. Lewis-Swan, A. M. Rey, O. Romero-Isart, C. A. Regal
Summary: This study demonstrates the measurement and reconstruction of quantum mechanical states through the direct measurement of position and momentum. By using optical tweezers to measure the momentum and trap harmonic evolution, we have successfully observed non-classical motional states and demonstrated some of their quantum properties. This research is important for quantum information, metrology, and the study of quantum behavior in massive levitated particles.
Article
Physics, Multidisciplinary
Satoya Imai, Nikolai Wyderka, Andreas Ketterer, Otfried Guehne
Summary: In this study, systematic methods are presented to analyze different forms of entanglement in multiparticle quantum systems through random measurements and moments of probability distributions. Criteria for various forms of entanglement in three-qubit systems and multiqubit systems are optimized using second moments of randomized measurements. Additionally, criteria for detecting bound entangled states in higher-dimensional two-particle systems and higher moments are provided.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Maksim Kunitski, Qingze Guan, Holger Maschkiwitz, Jorg Hahnenbruch, Sebastian Eckart, Stefan Zeller, Anton Kalinin, Markus Schoeffler, Lothar Ph H. Schmidt, Till Jahnke, Dorte Blume, Reinhard Doerner
Summary: The research explores the modulation of interactions between helium atoms in a helium dimer using ultrashort laser fields, demonstrating dissociation and alignment of wave packets. By controlling atomic interactions with external fields, new branches in physics are opened up and provide a technique for studying exotic and otherwise hardly accessible quantum systems.
Article
Physics, Multidisciplinary
Zongping Gong, Lorenzo Piroli, J. Ignacio Cirac
Summary: In modern quantum chaos theory, a fundamental result is the upper bound on the growth of out-of-time-order correlators, which is related to the operator-space entanglement entropy of the evolution operator. For one-dimensional quantum cellular automata (QCA), there exists a lower bound on quantum chaos quantified by such entanglement entropy, equal to twice the index of the QCA. This rigorous bound rules out the possibility of any sublinear entanglement growth behavior and shows that many-body localization is forbidden for unitary evolutions displaying nonzero index.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Evaldo M. F. Curado, Sofiane Faci, Jean-Pierre Gazeau, Diego Noguera
Summary: This study examines the conditions for state discrimination using squeezed coherent states and compares them with the conditions using standard coherent states. The minimum bound for quantum error probability, known as the Helstrom bound, is also considered.
Article
Materials Science, Multidisciplinary
Zixi Fang, Chen Fang, Kai Zhang
Summary: In this paper, we systematically investigate impurity-induced bound states in one-dimensional non-Hermitian systems. By constructing an impurity potential diagram, the minimal impurity potential required to generate bound states and the distribution of bound states are revealed. It is found that a finite impurity potential is required to generate bound states in the absence of Bloch saddle points.
Article
Multidisciplinary Sciences
Saba Zia Hassan, Jonas Tauch, Milaim Kas, Markus Noetzold, Henry Lopez Carrera, Eric S. Endres, Roland Wester, Matthias Weidemueller
Summary: This study investigates the AED reactions between hydroxyl anions and rubidium atoms, revealing different dynamics for collisions with ground and excited state rubidium. The experimental results are in good agreement with ab initio calculations, and steric effects are revealed.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Seth L. Filbrun, Teng-Xiang Huang, Fei Zhao, Kuangcai Chen, Bin Dong, Ning Fang
Summary: The system combines different imaging modes and spectral analysis methods for studying plasmon coupling mechanisms of gold nanorods on a mirror. Total internal reflection scattering microscopy reveals multiple coupling modes not observed in reflected dark-field microscopy.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Tailei Qi, Fei Han, Wenbo Liu, Zijie Yan
Summary: By increasing the particle size, the sign of optical torque in optical matter dimers can be reversed, which provides new strategies for creating light-driven nanomotors.