# IEEE Journal of Selected Topics in Quantum Electronics

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Displaying Results 1 - 25 of 29
• ### Frontcover

Publication Year: 2016, Article Sequence Number: 0001701
| |PDF (283 KB)
• ### IEEE Journal of Selected Topics in Quantum Electronics

Publication Year: 2016, Article Sequence Number: 0001801
| |PDF (95 KB)

Publication Year: 2016, Article Sequence Number: 0001802
| |PDF (200 KB)
• ### Guest Editorial Introduction to the Issue on Parity Time Photonics

Publication Year: 2016, Article Sequence Number: 0200502
| |PDF (251 KB) | HTML
• ### Modal Gain Analysis of Parity-Time-Symmetric Distributed Feedback Lasers

Publication Year: 2016, Article Sequence Number: 1500207
Cited by:  Papers (3)
| |PDF (2471 KB) | HTML

Parity-time (PT) symmetry has been demonstrated in the frame of classic optics and its applications in laser science have resulted in interesting mode selection mechanisms. PT symmetry breaking gratings (also called unidirectional Bragg gratings) have strong reflection when light is injected from one end, but they are transparent when injected from the other end. Such gratings are obtained through... View full abstract»

• ### Design Considerations for Single-Mode Microring Lasers Using Parity-Time-Symmetry

Publication Year: 2016, Article Sequence Number: 1500307
| |PDF (1841 KB) | HTML

Coupled microring arrangements with balanced gain and loss, also known as parity-time symmetric systems, are investigated both analytically and experimentally. In these configurations, stable single-mode lasing can be achieved at pump powers well above threshold. This self-adaptive mode management technique is broadband and robust to small fabrication imperfections. The results presented in this p... View full abstract»

• ### Asymmetric Light Transmission in PT-Symmetric Microring Resonators

Publication Year: 2016, Article Sequence Number: 3600106
| |PDF (472 KB) | HTML

We propose a new type of add-drop microring resonator made of gain and loss materials. Microring resonators are compact, narrow band, and optical channel dropping filters. In such linear systems, light transmission to side-coupled signal waveguides is always symmetric. However, we prove that properly arranging a gain and loss modulation in the microring resonator provides a new functionality: asym... View full abstract»

• ### ${\cal P}{\cal T}$-Symmetric Waveguides With Tunable Parameters

Publication Year: 2016, Article Sequence Number: 4402710
Cited by:  Papers (1)
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We propose a physical setting for a PT-symmetric waveguide with spatially varying parameters and mode structure. The system consists of a mixture of isotopes of Rubidium Λ-atoms loaded in a cell with Bragg cladding and exposed to laser fields ensuring Raman excitations, controlling the real and imaginary parts of the refractive index of the system. It is shown that the system parameters can... View full abstract»

• ### Tailoring Spectral Properties of Binary PT-Symmetric Gratings by Duty-Cycle Methods

Publication Year: 2016, Article Sequence Number: 4402807
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We explore the frequency selective functionalities of a nonuniform PT-symmetric Bragg grating with modulated complex index profile. We start by assessing the possibility to achieve an efficient apodization of the PT-symmetric Bragg grating spectral response by using direct adaptations of the conventional apodization techniques. A particular emphasis is put on the binary type structures with differ... View full abstract»

• ### Constant Intensity Supermodes in Non-Hermitian Lattices

Publication Year: 2016, Article Sequence Number: 4403506
Cited by:  Papers (1)
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We study the existence of a novel class of waves, with constant intensity (CI) in coupled non-Hermitian photonic systems. These generalized plane waves exist only in optical structures that are composed of gain and loss (in both linear and nonlinear domains). In the framework of coupled mode theory, we examine the properties of such supermodes in finite waveguide lattices. In particular, CI-superm... View full abstract»

• ### Design Considerations for Single-Mode Microring Lasers Using Parity–Time Symmetry

Publication Year: 2016, Article Sequence Number: 1500107
Cited by:  Papers (2)
| |PDF (2163 KB) | HTML

Coupled microring arrangements with balanced gain and loss, also known as parity-time symmetric systems, are investigated both analytically and experimentally. In these configurations, stable single-mode lasing can be achieved at pump powers well above threshold. This self-adaptive mode management technique is broadband and robust to small fabrication imperfections. The results presented in this p... View full abstract»

• ### Unidirectional Bragg Gratings Using Parity-Time Symmetry Breaking in Plasmonic Systems

Publication Year: 2016, Article Sequence Number: 4600712
Cited by:  Papers (1)
| |PDF (3833 KB) | HTML

Optical systems following concepts of parity-time (PT) symmetry have attracted significant attention because of their extraordinary behavior such as unidirectional reflectance or power oscillation. PT symmetric optical systems are realized by judiciously manipulating the complex refractive index to produce even- and odd-symmetric distributions for the real and imaginary indices, respectively. We p... View full abstract»

• ### Optimization of Biased PT-Symmetric Plasmonic Directional Couplers

Publication Year: 2016, Article Sequence Number: 4600907
Cited by:  Papers (1)
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We study a plasmonic directional coupler with a metallic cladding and dielectric core in the presence of balanced gain and loss, and demonstrate that such a photonic structure can possess the parity-time (PT) symmetry even when optical losses in metal are taken into account. We analyze the modal dispersion of the coupler when losses in metal are negligible and then study how substantially increase... View full abstract»

• ### Solitary Waves of a $\mathcal {P}$ $\mathcal {T}$-Symmetric Nonlinear Dirac Equation

Publication Year: 2016, Article Sequence Number: 5000109
Cited by:  Papers (4)
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In this study we consider we consider a prototypical example of a PT-symmetric Dirac model. We discuss the underlying linear limit of the model and identify the threshold of the PT-phase transition in an analytical form. We then focus on the examination of the nonlinear model. We consider the continuation in the PT-symmetric model of the solutions of the corresponding Hamiltonian model and find th... View full abstract»

• ### Phase Transition in $\mathcal {PT}$ Symmetric Active Plasmonic Systems

Publication Year: 2016, Article Sequence Number: 5000206
Cited by:  Papers (4)
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Surface plasmon polaritons (SPPs) are coherent electromagnetic surface waves trapped on an insulator-conductor interface. The SPPs decay exponentially along the propagation due to conductor losses, restricting the SPPs propagation length to few microns. Gain materials can be used to counterbalance the aforementioned losses. We provide an exact expression for the gain, in terms of the optical prope... View full abstract»

• ### Resonant Combinatorial Frequency Generation Induced by a PT-Symmetric Periodic Layered Stack

Publication Year: 2016, Article Sequence Number: 5000307
Cited by:  Papers (3)
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The nonlinear interaction of waves in PT-symmetric periodic stacks with an embedded nonlinear anisotropic dielectric layer illuminated by plane waves of two tones is examined. The three-wave interaction technique is applied to study the nonlinear processes. It is shown that the intensity of the three-wave mixing process can be significantly enhanced in resonant cavities based on PT-symmetric perio... View full abstract»

• ### Optical PT-Symmetric Counterparts of Ordinary Metals

Publication Year: 2016, Article Sequence Number: 5000409
Cited by:  Papers (2)
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How one can fabricate the Parity-Time (PT) symmetric siblings of commonly used metals in the visible? This paper tries to give an answer to that question by providing the features of the active media, which conjugately pair the complex permittivities of the ordinary metals (Copper, Aluminum, Silver, Gold, Platinum) at the optical frequencies. The frequency response model of the quantum dots (QDs) ... View full abstract»

• ### Tunability and Robustness of Dirac Points of Photonic Nanostructures

Publication Year: 2016, Article Sequence Number: 5000509
Cited by:  Papers (1)
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We study the tunability and robustness of photonic Dirac points (DPs) in plasmonic nanostructures. The tunability of the DP is demonstrated in graphene-based photonic superlattices by adjusting the graphene permittivity via the optical Kerr effect or electrical doping. The robustness of DPs is demonstrated in plasmonic lattices by showing that even very high levels of disorder are unable to locali... View full abstract»

• ### Passive PT-Symmetric Metasurfaces With Directional Field Scattering Characteristics

Publication Year: 2016, Article Sequence Number: 5000608
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We show that passive parity-time (PT) symmetric metasurfaces can be utilized to appropriately engineer the resulting far-field characteristics. Such PT-symmetric structures are capable of eliminating diffraction orders in specific directions, while maintaining or even enhancing the remaining orders. A systematic methodology is developed to implement this class of metasurfaces in both one-dimension... View full abstract»

• ### Unidirectional Perfect Absorber

Publication Year: 2016, Article Sequence Number: 5000706
Cited by:  Papers (5)
| |PDF (415 KB) | HTML

We show an interplay between Fano resonances and a judicious absorption mechanism leads to a unidirectional perfect absorber, which can be controlled in both direction and frequency. Critical coupling phenomenon created by interference, separates the left- and right-side of the system. At the same time, Fano resonance causes a divergence in the delay time of photons traveling through the loss part... View full abstract»

• ### Parity-Time Symmetry in Acoustics: Theory, Devices, and Potential Applications

Publication Year: 2016, Article Sequence Number: 5000809
Cited by:  Papers (2)
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Parity-time (PT) symmetric systems based on balanced distributions of gain and loss have attracted significant attention in wave physics, enabling the possibility of compensating material losses in photonic systems, and of inducing exceptional scattering phenomena, offering new possibilities for wave manipulation. A successful transition of these theoretical concepts to devices and practical appli... View full abstract»

• ### Propagation of Gaussian Beams in the Presence of Gain and Loss

Publication Year: 2016, Article Sequence Number: 5000906
Cited by:  Papers (2)
| |PDF (1027 KB) | HTML

We consider the propagation of Gaussian beams in a waveguide with gain and loss in the paraxial approximation governed by the Schrödinger equation. We derive equations of motion for the beam in the semiclassical limit that are valid when the waveguide profile is locally well approximated by quadratic functions. For Hermitian systems, without any loss or gain, these dynamics are given by Ha... View full abstract»

• ### Indium Phosphide Integrated Photonics

Publication Year: 2016, Article Sequence Number: 9802401
| |PDF (60 KB)
• ### Semiconductor Nanocrystal Optoelectronics

Publication Year: 2016, Article Sequence Number: 9802501
| |PDF (58 KB)
• ### Semiconductor Lasers

Publication Year: 2016, Article Sequence Number: 9802601
| |PDF (74 KB)

## Aims & Scope

Papers published in the IEEE Journal of Selected Topics in Quantum Electronics fall within the broad field of science and technology of quantum electronics of a device, subsystem, or system-oriented nature.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Luke F. Lester
Virginia Polytechnic Institute & State University