Physics

<i>Colloquium</i>: Superheavy elements: Oganesson and beyond

Reviews of Modern Physics - Tue, 2019-01-22 11:00

Author(s): S. A. Giuliani, Z. Matheson, W. Nazarewicz, E. Olsen, P.-G. Reinhard, J. Sadhukhan, B. Schuetrumpf, N. Schunck, and P. Schwerdtfeger

Superheavy atoms and their nuclei are at the forefront of experimental and theoretical nuclear and atomic physics, and chemistry. Because of their large atomic numbers, traditional nuclear and atomic concepts have to be revised in superheavy systems. In this Colloquium the latest developments in the field are described and the route for future scientific explorations in this area of research is indicated.


[Rev. Mod. Phys. 91, 011001] Published Tue Jan 22, 2019

Categories: Journals, Physics

Optical phase-modulated nonlinear waves in a graphene waveguide

Author(s): G. T. Adamashvili and D. J. Kaup

The different mechanisms that bring about the creation of optical nonlinear waves in a waveguide containing a graphene monolayer (or graphene-like two-dimensional material) are studied in the general case when resonant and nonresonant nonlinearities are simultaneously included. The conditions for th...


[Phys. Rev. A 99, 013832] Published Tue Jan 22, 2019

Categories: Journals, Physics

Edge states in trimer lattices

Author(s): V. M. Martinez Alvarez and M. D. Coutinho-Filho

Topological phases of matter have attracted much attention over the years. Motivated by analogy with photonic lattices, here we examine the edge states of a one-dimensional trimer lattice in the phases with and without inversion symmetry protection. In contrast to the Su-Schrieffer-Heeger model, we ...


[Phys. Rev. A 99, 013833] Published Tue Jan 22, 2019

Categories: Journals, Physics

Dynamically modulated perfect absorbers

Author(s): Suwun Suwunnarat, Dashiell Halpern, Huanan Li, Boris Shapiro, and Tsampikos Kottos

We introduce the concept of multichannel dynamically modulated perfect absorbers (DMPAs), which are periodically modulated lossy interferometric traps that completely absorb incident monochromatic waves. The proposed DMPA protocols utilize a Floquet engineering approach which produces a variety of e...


[Phys. Rev. A 99, 013834] Published Tue Jan 22, 2019

Categories: Journals, Physics

Cross density of states and mode connectivity: Probing wave localization in complex media

Author(s): Antoine Canaguier-Durand, Romain Pierrat, and Rémi Carminati

We introduce the mode connectivity as a measure of the number of eigenmodes of a wave equation connecting two points at a given frequency. Based on numerical simulations of scattering of electromagnetic waves in disordered media, we show that the connectivity discriminates between the diffusive and ...


[Phys. Rev. A 99, 013835] Published Tue Jan 22, 2019

Categories: Journals, Physics

Pure and achromatic spin-orbit shaping of light from Fresnel reflection off space-variant anisotropic media

Author(s): Mikaël Ghadimi Nassiri and Etienne Brasselet

We propose an approach to achieve achromatic pure geometric phase shaping of light from anisotropic media by exploiting the fundamental laws of electromagnetic waves. Its practical implementation requires a cover layer made of a dispersive isotropic medium. The approach applies to any anisotropic ma...


[Phys. Rev. A 99, 013836] Published Tue Jan 22, 2019

Categories: Journals, Physics

Maxwell's fish-eye lenses under Schwartz-Christoffel mappings

Author(s): Sicen Tao, Yangyang Zhou, and Huanyang Chen

In this paper, we designed Maxwell's fish-eye lens in a square shape from a conformal mapping and constructed it into a waveguide and a photonic crystal. We studied the unidirectional self-imaging effect from both geometric optics and wave optics. Ray tracing and full-wave simulations were performed...


[Phys. Rev. A 99, 013837] Published Tue Jan 22, 2019

Categories: Journals, Physics

Interference between two independent multi-temporal-mode thermal fields

Author(s): Jie Su, Jiaming Li, Liang Cui, Xiaoying Li, and Z. Y. Ou

We construct a general theoretical model for analyzing the intensity correlation of the field formed by mixing two independent multi-temporal-mode thermal fields. In the model, we use the intensity correlation function g(2) to characterize the mode property of the mixed thermal field. We find that g...


[Phys. Rev. A 99, 013838] Published Tue Jan 22, 2019

Categories: Journals, Physics

Quantum theory of superfluorescence based on two-point correlation functions

Author(s): Andrei Benediktovitch, Vinay P. Majety, and Nina Rohringer

Irradiation of a medium by short intense pulses from x-ray (XUV) free-electron lasers can result in saturated photoionization of inner electronic shells. As a result an inversion of populations between core levels appears. The resulting fluorescent radiation can be amplified during its propagation t...


[Phys. Rev. A 99, 013839] Published Tue Jan 22, 2019

Categories: Journals, Physics

Cavity-free vacuum-Rabi splitting in circuit quantum acoustodynamics

Author(s): Andreas Ask, Maria Ekström, Per Delsing, and Göran Johansson

Artificial atoms coupled to surface acoustic waves (SAWs) have played a crucial role in the recent development of circuit quantum acoustodynamics. In this paper, we have investigated the interaction of an artificial atom and SAWs beyond the weak-coupling regime, focusing on the role of the interdigi...


[Phys. Rev. A 99, 013840] Published Tue Jan 22, 2019

Categories: Journals, Physics

Arrays of dark optical traps on a toroidal surface

Author(s): Jakub Bělín, V. E. Lembessis, A. Lyras, O. Aldossary, and Johannes Courtial

We have theoretically constructed light fields that can generate optical potentials representing rectangular arrays of dark optical traps on the surface of a torus. The arrays are not diffraction limited, and their period can in principle be deeply subwavelength. We discuss the challenges anticipate...


[Phys. Rev. A 99, 013841] Published Tue Jan 22, 2019

Categories: Journals, Physics

Correlation functions with single-photon emitters under noisy resonant continuous excitation

Author(s): E. Baudin, R. Proux, M. Maragkou, Ph. Roussignol, and C. Diederichs

To characterize the statistics and indistinguishability of a source, it is common to measure the correlation functions of the emitted field using various interferometers. Here, we present a theoretical framework for the computation of the correlation functions of a two-level system that is resonantl...


[Phys. Rev. A 99, 013842] Published Tue Jan 22, 2019

Categories: Journals, Physics

Enhancing quadratic optomechanical coupling via a nonlinear medium and lasers

Author(s): Jian-Song Zhang, Ming-Cui Li, and Ai-Xi Chen

We propose a scheme to significantly increase quadratic optomechanical couplings of optomechanical systems with the help of a nonlinear medium and two driving lasers. The nonlinear medium is driven by one laser, and the optical cavity mode is driven by a strong laser. We derive an effective Hamilton...


[Phys. Rev. A 99, 013843] Published Tue Jan 22, 2019

Categories: Journals, Physics

Glassy Properties of Anderson Localization: Pinning, Avalanches, and Chaos

Author(s): G. Lemarié

I present the results of extensive numerical simulations, which reveal the glassy properties of Anderson localization in dimension two at zero temperature: pinning, avalanches, and chaos. I first show that strong localization confines quantum transport along paths that are pinned by disorder but can...


[Phys. Rev. Lett. 122, 030401] Published Tue Jan 22, 2019

Categories: Journals, Physics

Viewpoint: Crystalline Metals Effortlessly Fit the Mold

APS Physics - Tue, 2019-01-22 11:00

Author(s): Suveen N. Mathaudhu

Molding crystalline metals like silver into nanopillar structures is both possible and easier to achieve for narrower pillars, in contrast with other materials.


[Physics 12, 3] Published Tue Jan 22, 2019

Categories: Physics

Synopsis: Many-Body Localization Goes to Work

APS Physics - Tue, 2019-01-22 11:00

Disordered systems exhibiting many-body localization have unique thermal properties that could be utilized in a quantum engine.


[Physics] Published Tue Jan 22, 2019

Categories: Physics

Initializing a permutation-invariant quantum error-correction code

PRA: Quantum information - Tue, 2019-01-22 11:00

Author(s): Chunfeng Wu, Yimin Wang, Chu Guo, Yingkai Ouyang, Gangcheng Wang, and Xun-Li Feng

Recently, there has been growing interest in using quantum error correction in practical devices. A central issue in quantum error correction is the initialization of quantum data into a quantum error-correction code. Most studies have concentrated on generating quantum codes based on their encoding...


[Phys. Rev. A 99, 012335] Published Tue Jan 22, 2019

Categories: Journals, Physics

Positive-partial-transpose square conjecture for $n=3$

PRA: Quantum information - Tue, 2019-01-22 11:00

Author(s): Lin Chen, Yu Yang, and Wai-Shing Tang

We present the positive-partial-transpose (PPT) square conjecture introduced by M. Christandl Banff International Research Station Workshop: Operator Structures in Quantum Information Theory (Banff International Research Station, Alberta, 2012). We prove the conjecture in the case n=3 as a consequen...


[Phys. Rev. A 99, 012337] Published Tue Jan 22, 2019

Categories: Journals, Physics

Recovering noise-free quantum observables

PRA: Quantum information - Tue, 2019-01-22 11:00

Author(s): Matthew Otten and Stephen K. Gray

We introduce a technique for recovering noise-free observables in noisy quantum systems by combining the results of many slightly different experiments. Our approach is applicable to a variety of quantum systems, but we illustrate it with applications to quantum information and quantum sensing. The ...


[Phys. Rev. A 99, 012338] Published Tue Jan 22, 2019

Categories: Journals, Physics

Comment on “Optimal convex approximations of quantum states”

PRA: Quantum information - Tue, 2019-01-22 11:00

Author(s): Xiao-Bin Liang, Bo Li, and Shao-Ming Fei

In a recent paper, M. F. Sacchi [Phys. Rev. A 96, 042325 (2017)] addressed the general problem of approximating an unavailable quantum state by the convex mixing of different available states. For the case of qubit mixed states, we show that the analytical solutions in some cases are invalid. In thi...


[Phys. Rev. A 99, 016301] Published Tue Jan 22, 2019

Categories: Journals, Physics
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