Electromagnetically induced transparency wikipedia. Slow light technique has significant potential applications in many contemporary photonic device developments for integrated alloptical circuit, such as buffers, regenerators, switches and interferometers. Electromagnetically induced transparency eit is a phenomenon in which the presence of a nonradiative coherence leads to destructive quantum interference, causing an otherwise absorbing transition to become transparent. Electromagnetically induced transparency is a technique for eliminating the effect of a medium on a propagating beam of electromagnetic radiation. Planar metamaterial analogue of electromagnetically induced. We analyse the impact of the guiding effect and of the temperature on the properties of the eit phenomenon. Pdf electromagnetically induced transparency researchgate. We demonstrate how rydberg atoms and the phenomena of electromagnetically induced transparency can be used to aid in the recording of a musical instrument in real. Electromagnetically induced transparency eit firstly appeared in three level atomic system. Apr 18, 2016 introduction 3 a weak probe normally experiences absorption shown in blue. When one frequency component of the light field is much stronger than the other, it is referred to as a coupling or drive field, and the reduction of the absorption of the weaker probe field is called electromagnetically induced transparency. Electromagnetically induced transparency eit is a coherent optical nonlinearity which renders a medium transparent within a narrow spectral range around an absorption line. Hence, we get the name electromagnetically induced transparency. We have experimentally studied the propagation of two optical fields in a dense rubidium rb gas in the case when an additional microwave field is coupled to the hyperfine levels of rb atoms.
In addition, the dispersion properties are also a ected, giving rise to many useful applications such as e ective nonlinear frequency conversion, slow light and nonlinear mixing. It is shown that such driving reduces essentially the interaction of the gammaquantum with nuclei. Simultaneous observations of electromagnetically induced. Active control of electromagnetically induced transparency in. Extreme dispersion is also created within this transparency window which leads to slow light, described below.
Entropy free fulltext electromagnetically induced transparency. We report the observation of electromagnetically induced transparency eit of a mechanical field, where a. Abstract we report here simultaneous experimental observation of electromagnetically induced transparency eit and electromagnetically induced absorption eia in a multilevel vtype system in d 2 transition of 87 rb, i. Stopped light greater than 1 second using electromagnetically. Electromagnetically induced transparency eit is a technique for making an otherwise opticallythick medium transparent to laser radiation. Quantum information processing structures and methods use photons and fourlevel matter systems in electromagnetically induced transparency eit arrangements for one and twoqubit quantum gates, twophoton phase shifters, and bell state measurement devices. A realtime guitar recording using rydberg atoms and.
Electromagnetically induced transparency is a technique for eliminating the effect of medium on a propagating beam of electromagnetic radiation. Electromagnetically induced transparency in metamaterials at nearinfrared frequency jingjing zhang1, sanshui xiao1, claus jeppesen2, anders kristensen2 and niels asger mortensen1 1 dtu fotonik department of photonics engineering, technical university of denmark, dk2800 kongens lyngby, denmark. An outofplane reconfigurable microcantilever is the active element for resonator control. Active modulation of electromagnetically induced transparency. The eshaped metasurface supports a strong toroidal dipolar resonance with high quality q factor, which is verified by decomposed scattered powers for multipole moments using a cartesian coordinate. Electromagnetically induced transparency in media with. In this report we investigate the exotic phenomena of electrically induced transparency eit with a slightly historic view.
Azimuthal modulation of electromagnetically induced. Quantum control of light using electromagnetically induced transparency s591 transfer of quantum states from photons to atoms and vice versa. Electromagnetically induced transparency controlled by a. Electromagnetically induced grating eig is an optical interference phenomenon where an interference pattern is used to build a dynamic spatial diffraction grating in matter. Quantum control of light using electromagnetically induced. Electromagnetically induced transparency at a chiral. Electromagnetically induced transparency the concept of eit was first given by harris et al in 1990. Marangos3 1 fachbereich physik, technische universit at kaiserslautern,d67663 germany 2 institute of quantum electronics, ethh onggerberg, hpt g12, ch8093 z urich, switzerland. While the phenomenon is a gold standard in atomic quantum optics, it is hard to probe in bulk condensed matter and difficult to control in quantumconfined systemsprerequisites for exploitation in devices.
Electromagnetically induced transparency in a propagating. Electromagnetically induced transparency springerlink. Moreover, it is necessary to have a quantum memory that is capable of storing, releasing and manipulating quantum states at the level of individual quanta. Osa analog of electromagnetically induced transparency in. The interference is produced by the radiofrequency rf field driving the spin of the excited nuclear state in resonance. In this paper, we present an efficient coupling mechanism of an electromagnetically induced transparency like eitlike effect in an alldielectric nanometamaterial. It is in essence a quantum interference effect that. The change of interaction results in the rf induced transparency and in the decrease of the velocity of the gammaquantum. We study the electromagnetically induced transparency eit phenomenon in a hollowcore fibre filled with rubidium gas. Other names used to refer to this situation are dark resonance and coherent population trapping. Download video download transcript electromagnetically induced transparency eit and autlertownes splitting ats are two similar yet distinct phenomena that modify the transmission of a weak probe field through an absorption medium in the presence of a coupling field, featured in a variety of threelevel atomic systems. Theoretically, a 100% transmission can be achieved.
We propose a conductively coupled terahertz metallic metamaterial exhibiting analog of electromagnetically induced transparency eit. Stopped light with storage times greater than 1 second using electromagnetically induced transparency in a solid presented by. Electromagnetically induced transparency of interacting rydberg. A pronounced coupling induced reflectance peak is observed within a broad resonance spectrum. Electromagnetically induced transparency by nmr by hyungbin son submitted to the department of physics on may 8, 2003, in partial fulfillment of the requirements for the degree of bachelor of science in physics abstract electromagnetically induced transparency eit is a quantum nonlinear optical interfer. Autlertownes splitting ats and electromagnetically induced transparency eit both yield transparency in an absorption profile, but only eit yields strong transparency for a weak pump field due to fano interference. Electromagnetically induced transparency semantic scholar. Electromagnetically induced transparency for gammaquanta.
Nov 08, 2019 electromagnetically induced transparency, as a quantum interference effect to eliminate optical absorption in an opaque medium, has found extensive applications in slow light generation, optical storage, frequency conversion, optical quantum memory as well as enhanced nonlinear interactions at the fewphoton level in all kinds of systems. The electromagnetically induced transparency eit is a phenomena at which the presence of a control field converts an initially opaque medium into a transparent one, at certain frequencies. Transparence induite electromagnetiquement wikipedia. Eit arises in excitonic transitions of singlelayer transition. Mar 16, 2011 a phenomenon known as electromagnetically induced transparency has been the subject of much research in atomic systems, as it makes it possible to slow down and stop light. However, the eit phenomenon in atomic system requires stable optical pumping and ultralow. Electromagnetically induced transparency eit is a quantum interference effect arising from different transition pathways of optical fields. It has been been exploited to either control or eliminate the effect that certain materials have on. Pdf electromagnetically induced transparency aabhaas. Modelling and simulation of electromagnetically induced. Optics in coherent media michael fleischhauer1, atac imamoglu2, and jonathan p.
Pdf on jun 27, 2010, kowalski krzysztof, cao long v. The structure consists of an optically bright dipole antenna and an optically dark quadrupole antenna, which are cutout structures in a thin gold film. When a strong coupling laser field is used to drive a resonant transition in a threelevel atomic system, the absorption of a weak probe laser field can be reduced or eliminated provided the two resonant transitions are coherently coupled to a. Eit may also be used, but under more limited condi. A second coupling beam induces eit and creates a window in the absorption region red. Controlling of absorption and dispersion spectrum via. Osa electromagnetically induced transparency in an all. An analog of electromagnetically induced transparency eit in an asymmetric eshaped alldielectric metasurface was proposed and numerically demonstrated in the near infrared spectral region. In this paper, we show that electromagnetically induced transparency eit can be realized in mediums with rydberg excitons. By actively tuning the dark mode of a metamaterial, guet al. Article on electromagnetically induced transparency controlled by a microwave field. The subject of this paper is the electromagnetically induced transparency eit, the phenomenon belonging to the category of the coherent effects.
Emphasis is placed on the experimental work reported in this field since 1990. Experimental demonstration of electromagnetically induced. Empirically discriminating eit from ats is important but so far has been subjective. The basic idea is to use two lasers or electromagnetic fields whose frequency difference is equal to a raman or twophoton transition of the atom or molecule. Oct 23, 2012 metamaterial analogues of electromagnetically induced transparency provide interesting optical components and applications. With realistic, reliable parameters which show good agreement with optical and electrooptical experiments, as well as the proper choice of rydberg exciton states in the cu2o crystal, we indicate how the eit can be performed. Nov, 2019 electromagnetically induced transparency eit arises because of quantum interference between electronic transitions. Aug 26, 2018 continuous resonance frequency tuning of coupled metal resonators, which exhibit an electromagnetically induced transparency eit analog in the terahertz region, is experimentally demonstrated and t. Within the transparency window, both absorption and. Users may download and print one copy of any publication from the public portal for the purpose of. Electromagnetically induced transparency experimental. Pdf electromagnetically induced transparency in optical. Electromagnetically induced transparency in metamaterials at. Electromagnetically induced transparency and slow light with.
Transition from electromagnetically induced transparency to. Electromagnetically induced transparency eit is a coherent optical nonlinearity which renders a medium transparent within a narrow spectral range around an. In this way the optical properties of a medium can be dramatically modified, leading to electromagnetically induced transparency and related effects, which have placed gasphase systems at the center of recent advances in the development of media with radically new optical properties. Starting with an introduction to the phenomena of eit, we state the vuv problem and go on to describe the solution given by. This effect was theoretically predicted, and experimentally observed in the 1990s. They then discuss pulse propagation and the adiabatic evolution of. This enables observation of regions of spatially dependent electromagnetically induced transparency eit. Metamaterial analogues of electromagnetically induced transparency eit have been.
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