Electromagnetically induced holographic imaging in hybrid artificial molecule

Abstract

We propose two schemes of holographic imaging with an object that has no any macro structure itself. The tunable electromagnetically induced grating (EIG) is such a kind of object. We obtain an EIG based on the periodically modulated strong susceptibility in a three-level ladder-type hybrid artificial molecule, which is comprised of a semiconductor quantum dot and a metal nanoparticle coupled via the Coulomb interaction. The holographic interference pattern is detected either directly in the way of classical holographic imaging with a coherent field being the imaging light, or indirectly and nonlocally in the way of two-photon coincidence measurement with a pair of entangled photons playing the role of imaging light. This work provides a practical prototype of electromagnetically induced transparency-based holographic solid-state devices for all-optical classical and quantum information processing.

Dual-Mode On-to-Off Modulation of Plasmon-Induced Transparency and Coupling Effect in Patterned Graphene-Based Terahertz Metasurface

“…, in which the inter-loss coefficient is γ i1(2) = ω 1(2) /(2Q i1(2) ) and the extra-loss coefficient is γ o1(2) = ω 1(2) /(2Q o1(2) ). Additionally, Q i1(2) = Re(n eff )/Im(n eff ) [29] is the inter-loss quality factor, which can be obtained by effective refractive index n eff = β/k 0 . The intra-loss quality factor can be obtained by 1/Q t1(2) = 1/Q i1(2) + 1/Q o1(2) , with Q t1(2) = f/Δf being the quality factor of the whole system (Δf is 3 dB bandwidth).…”

“…Consequently, graphene-based plasmonic optics has been used in many applications, for example, light-sensing [15,16], absorption [17][18][19], switching [20], and other fascinating phenomena such as nonlinear optics [21,22] and plasmoninduced transparency (PIT) [23][24][25][26]. The PIT effect, which is the result of destructive interference between the superradiation mode and the subradiation mode, has produced a variety of plasmonic applications, for example, plasmonic switching [20,27], slow-light propagation [28], holographic imaging [29], and optical storage [30]. To achieve such a complex interaction between the light and the matter, the PIT can be obtained in heterogeneous graphene ribbons [31], single-layer or multilayer graphene [32][33][34], and graphene-based metasurfaces [35].…”

Gain-phase grating via double tunneling in quantum dot molecules

“…Electromagnetically induced grating (EIG) [1] as a kind of artificial periodic structure that can effectively diffract light to other directions based on electromagnetically induced transparency (EIT) has been widely studied due to its potential applications such as optical bistability [2], all-optical switching and routing [3], biphoton waveform shaping [4], light storage [5], Talbot effect [6], holographic imaging [7], and four-wave mixing [8]. In EIT medium, the space-dependent dispersion and absorption could be achieved via replacing the traveling-wave driving field by the standing-wave field and the weak probe light could be diffracted to the other directions.…”

Electromagnetically induced grating via Kerr nonlinearity and spontaneously generated coherence in a Doppler broadened four-level N-type atomic system

“…EIG phenomena can make an opaque medium a grating element by employing the electromagnetic field in the medium and has a variety of applications i.e. holographic imaging [7], Talbot effect [8], light storage [9] switching and routing [10]. Due to the spatial modulation of the SW control field, the amplitude of the incident probe field is also affected periodically, which ultimately led toward higher-order diffraction of probe field incident on it.…”