Search Results - "Graefe, Eva Maria"

Mixed-state evolution in the presence of gain and loss by Brody, Dorje C, Graefe, Eva-Maria

“…A model is proposed that describes the evolution of a mixed state of a quantum system for which gain and loss of energy or amplitude are present. Properties of…”
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A non-Hermitian PT-symmetric kicked top by Mudute-Ndumbe, Steve, Graefe, Eva-Maria

“…A non-Hermitian PT-symmetric version of the kicked top is introduced to study the interplay of quantum chaos with balanced loss and gain. The classical…”
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Information Geometry of Complex Hamiltonians and Exceptional Points by Dorje C. Brody, Eva-Maria Graefe

“…Information geometry provides a tool to systematically investigate the parameter sensitivity of the state of a system. If a physical system is described by a…”
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Semiclassical Husimi Distributions of Schur Vectors in Non-Hermitian Quantum Systems by Hall, Joseph, Malzard, Simon, Graefe, Eva-Maria

“…We construct a semiclassical phase-space density of Schur vectors in non-Hermitian quantum systems. Each Schur vector is associated to a single Planck cell…”
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PT symmetry dips into two-photon interference by Graefe, Eva-Maria

“…Measurements of the Hong–Ou–Mandel effect in a quantum system with PT-symmetric losses composed of coupled waveguides and single photons produce some…”
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Husimi Dynamics Generated by non-Hermitian Hamiltonians by Holmes, Katherine, Rehman, Wasim, Malzard, Simon, Graefe, Eva-Maria

“…The dynamics generated by non-Hermitian Hamiltonians are often less intuitive than those of conventional Hermitian systems. Even for models as simple as a…”
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Breakdown of adiabatic transfer of light in waveguides in the presence of absorption by Graefe, Eva-Maria, Mailybaev, Alexei A., Moiseyev, Nimrod

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Semiclassical quantization for a bosonic atom-molecule conversion system by Graefe, Eva-Maria, Graney, Maria, Rush, Alexander

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Propagation of Gaussian Beams in the Presence of Gain and Loss by Graefe, Eva-Maria, Rush, Alexander, Schubert, Roman

“…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…”
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Quantum-classical correspondence for a non-Hermitian Bose-Hubbard dimer by Graefe, Eva-Maria, Korsch, Hans Jürgen, Niederle, Astrid Elisa

“…We investigate the many-particle and mean-field correspondence for a non-Hermitian N-particle Bose-Hubbard dimer where a complex on-site energy describes an…”
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Bloch oscillations of Bose-Einstein condensates: Quantum counterpart of dynamical instability by Kolovsky, Andrey R., Korsch, Hans Jürgen, Graefe, Eva-Maria

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PT -symmetric sinusoidal optical lattices at the symmetry-breaking threshold by Graefe, Eva-Maria, Jones, H. F.

“…The PT-symmetric potential V{sub 0}[cos(2{pi}x/a)+i{lambda}sin(2{pi}x/a)] has a completely real spectrum for {lambda}{<=}1 and begins to develop complex…”
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Wave-packet evolution in non-Hermitian quantum systems by Graefe, Eva-Maria, Schubert, Roman

“…The quantum evolution of the Wigner function for Gaussian wave packets generated by a non-Hermitian Hamiltonian is investigated. In the semiclassical limit…”
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Six-dimensional space-time from quaternionic quantum mechanics by Brody, Dorje C., Graefe, Eva-Maria

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Quantum Chaos on Display by Graefe, Eva-Maria

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Intensity landscapes in elliptical and oval billiards with a circular absorbing region by Holmes, Katherine, Hall, Joseph, Graefe, Eva-Maria

“…Billiard models of single particles moving freely in two-dimensional regions enclosed by hard walls, have long provided ideal toy models for the investigation…”
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Semiclassical Husimi distributions for non-Hermitian quantum systems by Hall, Joseph, Malzard, Simon, Graefe, Eva-Maria

“…Phys. Rev. Lett., 131, 040402 (2023) We construct a semiclassical phase-space density of Schur vectors in non-Hermitian quantum systems. Each Schur vector is…”
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Phase-space measurements, decoherence and classicality by Brody, Dorje C, Graefe, Eva-Maria, Melanathuru, Rishindra

“…The emergence of classical behaviour in quantum theory is often ascribed to the interaction of a quantum system with its environment, which can be interpreted…”
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Landau-Zener transitions through a pair of higher order exceptional points by Melanathuru, Rishindra, Malzard, Simon, Graefe, Eva-Maria

“…Non-Hermitian quantum systems with explicit time dependence are of ever-increasing importance. There are only a handful of models that have been analytically…”
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Bloch oscillations in a Bose-Hubbard chain with single-particle losses by Longstaff, Bradley, Graefe, Eva-Maria

“…J. Phys. B: At. Mol. Opt. Phys. 53 (2020) 195302 We theoretically investigate Bloch oscillations in a one-dimensional Bose-Hubbard chain, with single-particle…”
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