Yazar "Yüce, C." için listeleme
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Absorption and emission processes in noncommutative space
Yüce, C. (World Scientific Publ Co Pte LTD, 2006)Atom-field interaction and absorption, emission of photons in noncommutative space are investigated. We calculate the rate and the directional distribution of the radiation. The modified selection rules which govern allowed ... -
Bright soliton in an expulsive potential in a dipolar condensate
Yüce, C. (Elsevier Science BV, 2011)We study the stability of matter-wave bright solitons for a dipolar Bose-Einstein condensate in a harmonic potential which is transversely attractive and longitudinally expulsive. We map the regimes of stability as a ... -
Critical trap aspect ratios for dipolar BEC
Yüce, C. (Springer, 2011)We show that there exists critical trap aspect ratios for a trapped Bose-Einstein condensate with dipole-dipole interactions. We discuss the role of critical trap aspect ratios on both the critical angular velocity above ... -
Discrete parametric oscillation and nondiffracting beams in a Glauber-Fock oscillator
We consider a Glauber-Fock oscillator and show that diffraction can be managed. We show how to design arrays of waveguides where light beams experience zero diffraction. We find an exact analytical family of nondiffracting ... -
Discrete rogue waves in an array of waveguides
We study discrete rogue waves in an array of nonlinear waveguides. We show that very small degree of disorder due to experimental imperfection has a deep effect on the formation of discrete rogue waves. We predict long-living ... -
Dynamical control in a quasi-periodically modulated optical lattice
Yüce, C. (Epl Association, European Physical Society, 2013)We investigate quantum tunneling phenomena for an optical lattice subjected to a bichromatic ac force. We show that incommensurability of the frequencies leads to super Bloch oscillation. We propose directed super Bloch ... -
Edge states at the interface of non-Hermitian systems
Yüce, C. (Amer Physical Soc, 2018)Topological edge states appear at the interface of two topologically distinct Hermitian insulators. We study the extension of this idea to non-Hermitian systems. We consider PT-symmetric and topologically distinct non-Hermitian ... -
An exact treatment for the BEC with three-body recombination and time-dependent scattering length
Yüce, C. (Academic Press Inc Elsevier Science, 2007)In this study, Gross-Pitaevskii (GP) equation with three-body recombination and with a time-dependent scattering length is investigated. It is shown that GP equation admits an exact solution for a special choice of the ... -
Fast frictionless expansion of an optical lattice
Yüce, C. (Elsevier Science BV, 2012)We investigate fast frictionless expansion of an optical lattice with dynamically variable spacing (accordion lattice). We design an expansion trajectory that yields a final state identical to the initial state up to an ... -
Free electron in a laser field: The nonrelativistic solution
Yüce, C. (2006)Schrodinger equation for a charged particle interacting with the plane-wave electromagnetic field is solved exactly. The exact analytic solution and the perturbative solution up to second order are compared -
Majorana edge modes with gain and loss
Yüce, C. (Amer Physical Soc, 2016)We consider a non-Hermitian generalization of the Kitaev model and study the existence of stable Majorana zero energy modes. We show that they exist in the limit of zero chemical potential even if balanced gain and loss ... -
Off-axis vortex in a rotating dipolar Bose-Einstein condensate
We consider a singly quantized off-axis straight vortex in a rotating dipolar ultracold gas in the Thomas-Fermi (TF) regime. We derive analytic results for small displacements and perform numerical calculations for large ... -
PT symmetric Aubry-Andre model
Yüce, C. (Elsevier, 2014)PT symmetric Aubry-Andre model describes an array of N coupled optical waveguides with position-dependent gain and loss. We show that the reality of the spectrum depends sensitively on the degree of quasi-periodicity for ... -
PT symmetric Floquet topological phase in SSH model
Türker, Z.; Tombuloğlu, S.; Yüce, C. (Elsevier Science BV, 2018)We consider periodically modulated Su-Schrieffer-Heeger (SSH) model with gain and loss. This model, which can be realized with current technology in photonics using waveguides, allows us to study Floquet topological ... -
Scattering from a PT symmetric standing wave
Yüce, C. (Elsevier, 2012)We study the Kapitza-Dirac diffraction of a free beam particle in the presence of a PT symmetric standing wave. We discuss that the momentum and total probability are not conserved in the non-Hermitian scattering process. ... -
Self-accelerating matter waves
Yüce, C. (World Scientific Publ Co Pte LTD, 2015)The free particle Schrodinger equation admits a nontrivial self-accelerating Airy wave packet solution. Recently, the Airy beams that freely accelerate in space was experimentally realized in photonics community. Here, we ... -
Self-accelerating parabolic cylinder waves in 1-D
Yüce, C. (Elsevier Science BV, 2016)We introduce a new self-accelerating wave packet solution of the Schrodinger equation in one dimension. We obtain an exact analytical parabolic cylinder wave for the inverted harmonic potential. We show that truncated ... -
Self-acceleration in non-Hermitian systems
Yüce, C.; Türker, Z. (Elsevier Science BV, 2017)We study self-acceleration in PT and non-PT symmetric systems. We find some novel wave effects that appear uniquely in non-Hermitian system. We explore self-accelerating waves with constant intensity and integrable ... -
Self-oscillating beams in a photonic lattice
Yüce, C. (Epl Association, European Physical Society, 2016)We study self-acceleration in a parabolic tight-binding lattice and construct a self-accelerating wave packet in k-space. As opposed to accelerating Airy wave packets in free space, self-acceleration occurs in k-space and ... -
Shortcuts to adiabaticity for growing condensates
Özçakmaklı, Z.; Yüce, C. (IOP Publishing LTD, 2012)We investigate fast frictionless expansion for growing Bose-Einstein condensates described by the Gross-Pitaevskii gain equation. We show that fast frictionless expansion can be generalized to a condensate continuously ...
