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The spectral singularity (SS) and coherent perfect absorption (CPA) have been extensively studied over the last one and half decade for different non-Hermitian potentials in non-Hermitian standard quantum mechanics (SQM) governed by…

Quantum Physics · Physics 2019-08-06 Mohammad Hasan , Bhabani Prasad Mandal

We present the design and performance of a non-imaging concentrator for use in broad-band polarimetry at millimeter through submillimeter wavelengths. A rectangular geometry preserves the input polarization state as the concentrator couples…

Instrumentation and Methods for Astrophysics · Physics 2023-07-19 A. Kogut , D. J. Fixsen , R. S. Hill

Black phosphorus (BP), a relative new plasmonic two-dimensional (2D) material, offers unique photonic and electronic properties. In this work, we propose a new tunable and broadband ultrathin coherent perfect absorber (CPA) device operating…

Optics · Physics 2020-08-10 Tianjing Guo , Christos Argyropoulos

In radiative B decays to final states containing one spin zero meson, one spin one meson and a photon, the photon polarization can be measured from the angular distribution of the final state. The P-odd, C-even components of this…

High Energy Physics - Phenomenology · Physics 2007-05-23 David Atwood , Tim Gershon , Masashi Hazumi , Amarjit Soni

We analyze a scheme for controlling coherent photon absorption by cavity electromagnetically induced transparency (EIT) in a three-level atom-cavity system. Coherent perfect absorption (CPA) can occur when time-reversed symmetry of lasing…

Optics · Physics 2021-09-01 Miaodi Guo

We study phase conjugation in a nonlinear composite slab when the counter propagating pump waves are completely absorbed by means of coherent perfect absorption. Under the undepleted pump approximation the coupling constant and the phase…

Optics · Physics 2016-11-29 K. Nireekshan Reddy , Achanta Venu Gopal , S. Dutta Gupta

We show that, contrary to what is claimed in Ref. [J. Jeffers, Phys. Rev. Lett. 123, 143602 (2019)], there is no nonlocal coherent absorption by the two lossy beam splitters considered in detail in the treatment of the setup presented in…

Quantum Physics · Physics 2019-12-18 Pablo L. Saldanha

We investigate a unique type of zero-index medium with both gain and loss (ZIMGL), whose effective permittivity and permeability are purely imaginary and of opposite signs. We show analytically that, by using a slab of ZIM-GL with equal…

Optics · Physics 2016-12-28 Ping Bai , Kun Ding , Gang Wang , Jie Luo , Zhao-Qing Zhang , C. T. Chan , Ying Wu , Yun Lai

A status report on the topic Compton scattering and polarizabilities is presented with emphasis on the scalar t-channel as entering into dispersion theory. Precise values for the polarizabilities are obtained leading to $\alpha_p = 12.0\pm…

High Energy Physics - Phenomenology · Physics 2013-06-26 Martin Schumacher , Michael D. Scadron

Plasmonics offer an exciting way to mediate the interaction between light and matter, allowing strong field enhancement and confinement, large absorption and scattering at resonance. However, simultaneous realization of ultra-narrow band…

Optics · Physics 2016-01-06 Zhengdong Yong , Senlin Zhang , Chengsheng Gong , Sailing He

An example of a coherent measurement for the direct evaluation of the degree of polarization of a single-mode optical beam is presented. It is applied to the case of great practical importance where depolarization is caused by polarization…

Quantum Physics · Physics 2015-06-26 N. Gisin

Assuming 3-$\nu$ mixing, massive Majorana neutrinos and neutrinoless double-beta (\betabeta-) decay generated only by the (V-A) charged current weak interaction via the exchange of the three Majorana neutrinos, we briefly review the…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Pascoli , S. T. Petcov , T. Schwetz

We consider the effect of electromagnetic coupling between localized surface plasmons in a metallic nanoparticle (NP) and excitons or weakly interacting electron-hole pairs in a semiconductor matrix where the NP is embedded. An expression…

Mesoscale and Nanoscale Physics · Physics 2018-10-08 Rui M. S. Pereira , Joel Borges , Georgui V. Smirnov , Filipe Vaz , Mikhail I. Vasilevskiy

The total number of electrons in a classical microplasma can be non-intrusively measured through elastic in-phase coherent microwave scattering (CMS). Here, we establish a theoretical basis for the CMS diagnostic technique with an emphasis…

The status of CP violation and the CKM matrix is reviewed. Direct CP violation in B decay has been established and the measurement of sin(2beta) in \psi K modes reached 5% accuracy. I discuss the implications of these, and of the possible…

High Energy Physics - Phenomenology · Physics 2014-11-17 Zoltan Ligeti

We present a theoretical study of a novel polarization beam splitter (PBS), different to conventional time-reversal symmetry one, where can be totally reflected at two opposite sides with one specific linearly polarized light incident and…

Optics · Physics 2024-02-29 Jeng Yi Lee

We propose a new method to measure the absolute photon absorption cross section of neutral molecules in a molecular beam. It is independent of our knowledge of the particle beam density, nor does it rely on photo-induced fragmentation or…

Quantum Physics · Physics 2008-12-31 Stefan Nimmrichter , Klaus Hornberger , Hendrik Ulbricht , Markus Arndt

Radio pulsar polarization exhibits a number of complex phenomena that are classified into the realm of `beyond the rotating vector model' (RVM). It is shown that these effects can be understood in geometrical terms, as a result of coherent…

High Energy Astrophysical Phenomena · Physics 2019-06-26 J. Dyks

Recently observed anomalies in the $B_s \to J/\psi \phi$ decay and the like-sign dimuon asymmetry $A^b_{sl}$ hint at possible new physics (NP) in the $\bsbsbar$ mixing. We parameterize the NP with four model-independent quantities: the…

High Energy Physics - Phenomenology · Physics 2015-05-28 Amol Dighe , Diptimoy Ghosh , Anirban Kundu , Sunando Kumar Patra

The CPA-laser is a coexisting state of coherent perfect absorption and lasing that was proposed in parity-time ($\cal PT$) symmetric photonic systems. In this work we show that the spectral signature of a CPA-laser displayed by the singular…

Optics · Physics 2017-01-11 Li Ge , Liang Feng