Tailoring PT-symmetric soliton switch

Govindarajan, A.; Sarma, Amarendra K.; Lakshmanan, M.

doi:10.1364/ol.44.000663

Cited by 38 publications

(29 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 186 ] PT symmetry-induced effects can be interesting in nonlinear switching of optical signals. [85,187] On the other side, lasers could provide important class of platforms to investigate nonlinear effects along with non-Hermitian physics, above the first lasing threshold, where lasers are nonlinear in nature. In this case, nonlinear modal interactions may play an important role.…”

Section: Pt Symmetry In Nonlinear Opticsmentioning

confidence: 99%

Parity‐Time Symmetry in Non‐Hermitian Complex Optical Media

et al. 2019

View full text Add to dashboard Cite

The explorations of the quantum-inspired symmetries in optical and photonic systems have witnessed immense research interests both fundamentally and technologically in a wide range of subjects of physics and engineering. One of the principal emerging fields in this context is non-Hermitian physics based on parity-time symmetry, originally proposed in the studies pertaining to quantum mechanics and quantum field theory, recently ramified into diverse set of areas, particularly in optics and photonics. The intriguing physical effects enabled by non-Hermitian physics and PT symmetry have enhanced significant applications prospects and engineering of novel materials. In addition, it has observed increasing research interests in many emerging directions beyond optics and photonics. This Review paper attempts to bring together the state of the art developments in the field of complex non-Hermitian physics based on PT symmetry in various physical settings along with elucidating key concepts and background and a detailed perspective on new emerging directions. It can be anticipated that this trendy field of interest can be indispensable in providing new perspectives in maneuvering the flow of light in the diverse physical platforms in optics, photonics, condensed matter, opto-electronics and beyond, and offer distinctive applications prospects in novel functional materials.

show abstract

Section: Pt Symmetry In Nonlinear Opticsmentioning

confidence: 99%

Parity‐Time Symmetry in Non‐Hermitian Complex Optical Media

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Presently, the notion of P T -symmetry is reckoned as one of the research areas to be subjected to an intense investigation by the scientific community (See Refs. [26][27][28][29][30][31][32][33][34][35][36] and therein). This notion would have remained as an unrealistic subject in real physical settings forever if not for the fact that the fundamental postulates of P T -symmetry can be translated from quantum mechanics to optics [26,37,38].…”

Section: Introductionmentioning

confidence: 99%

Low-power optical bistability in $\mathcal{PT}$-symmetric chirped Bragg gratings with four-wave mixing

Sudhakar,

Raja,

Govindarajan

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

The central theme of this article is the analysis of the usefulness of introducing four-wave mixing or modulation of Kerr nonlinearity in a nonuniform grating structure with gain and loss. To do so, we propose an inhomogeneous system in which the nonlinearity of the P T -symmetric grating is modulated. It is proven that the proposed scheme can be fruitful only if the nonlinearity and its associated modulation terms are assumed to be self-defocusing ones. In order to cut down the intensity required for the steering, the sign of chirping is taken to be negative and the wavelength of operating light is considered to be higher than the Bragg wavelength. Alongside these settings, launching the light from the rear end of the device dramatically reduces the critical intensity to a value of 0.015 (approximately) which must be the lowest switching intensity ever reported in the context of nonlinear P T -symmetric gratings. The ramplike stable states in the broken P T -symmetric regime prevail even in the company of modulation in the nonlinearity index for both of the light incident directions.

show abstract

“…Among these developments, PT -symmetric laser [10], the realization of anti PT -symmetry in microcavity [11,12] and the ultrasensitive electromagnetic sensors [13] are worth mentioning. The careful balancing of loss and gain is now being overcome through gain-free route by using appropriate designed passive systems [14][15][16]. Recent observation of unbroken and broken phases of PT -symmetry in photonic condensates near-equilibrium condition, has opened further avenues for both physical and technological applications [17].…”

Section: Introductionmentioning

confidence: 99%

PT-symmetry and supersymmetry: interconnection of broken and unbroken phases

et al. 2021

View full text Add to dashboard Cite

The broken and unbroken phases of P T and supersymmetry in optical systems are explored for a complex refractive index profile in the form of a Scarf potential, under the framework of supersymmetric quantum mechanics. The transition from unbroken to the broken phases of P T -symmetry, with the merger of eigenfunctions near the exceptional point is found to arise from two distinct realizations of the potential, originating from the underlying supersymmetry. Interestingly, in P T -symmetric phase, spontaneous breaking of supersymmetry occurs in a parametric domain, possessing non-trivial shape invariances, under reparametrization to yield the corresponding energy spectra. One also observes a parametric bifurcation behaviour in this domain. Unlike the real Scraf potential, in P T -symmetric phase, a connection between complex isospecrtal superpotentials and modified Korteweg-de Vries equation occurs, only with certain restrictive parametric conditions. In the broken P T -symmetry phase, supersymmetry is found to be intact in the entire parameter domain yielding the complex energy spectra, with zero-width resonance occurring at integral values of a potential parameter.

show abstract

Tailoring PT-symmetric soliton switch

Cited by 38 publications

References 18 publications

Parity‐Time Symmetry in Non‐Hermitian Complex Optical Media

Parity‐Time Symmetry in Non‐Hermitian Complex Optical Media

Low-power optical bistability in $\mathcal{PT}$-symmetric chirped Bragg gratings with four-wave mixing

PT-symmetry and supersymmetry: interconnection of broken and unbroken phases

Contact Info

Product

Resources

About