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Quantum information dynamics in a high-dimensional parity-time-symmetric system
-order exceptional point. By tracking the coherent, nonunitary evolutionNon-Hermitian systems with parity-time (PT) symmetry give rise to exceptional points (EPs) with exceptional properties that ...
Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
- 2020 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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Complex symmetric Hamiltonians and exceptional points of order four and five
A systematic elementary linear-algebraic construction of non-Hermitian Hamiltonians H = H(gamma) possessing exceptional points gamma = gamma((EP)) of higher orders is proposed. The implementation of the method lead...
Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
- 2018 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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Liouvillian exceptional points of any order in dissipative linear bosonic systems: Coherence functions and switching between PT and anti-PT symmetries
Usually, when investigating exceptional points (EPs) of an open Markovian can become of any higher order m >= n defined in the infinite Hilbert space. These higher-order LEPs can be identified ...
Optics (including laser optics and quantum optics)
- 2020 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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Dynamically crossing diabolic points while encircling exceptional curves: A programmable symmetric-asymmetric multimode switch
photonic system, by dynamically winding around an exceptional point (EP) a controlled. However, for multimode systems with higher-order EPs or multiple low-order EPs that this difficulty can be overcome b...
Optics (including laser optics and quantum optics)
- 2023 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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Generalized Bose-Hubbard Hamiltonians exhibiting a complete non-Hermitian degeneracy
The method of construction of the tridiagonal and symmetric complex-matrix Hamiltonians H-(N)(z) exhibiting an exceptional point (EP) degeneracy of the Nth (i.e., maximal) order at a preselected parameter z = z((EPN)) = 1 i...
Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
- 2019 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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ON ONE ESTIMATE FOR SOLUTIONS OF TWO-POINT BOUNDARY VALUE PROBLEMS FOR HIGHER-ORDER STRONGLY SINGULAR LINEAR DIFFERENTIAL EQUATIONS
For higher-order strongly singular diferential equations with deviating arguments, the estimates for solutions of two-point conjugated and right-focal boundary value problems are established....
BA - Obecná matematika
- 2013 •
- Jx
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Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Angle conditions for discrete maximum principles in higher-order FEM
of a triangular domain for orders of approximation three and higher. This extends the result [Computing 27, 145-154(1981)] that the Laplace equation discretiyed bz the higher-order FEM sarisfies the DMP on a patch...
BA - Obecná matematika
- 2010 •
- D
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D - Stať ve sborníku
Generating high-order quantum exceptional points in synthetic dimensions
methods for constructing high-order exceptional points (EPs) in dissipative systems higher-order moments of system operators, e.g., of a quadratic two-mode system Hamiltonians (NHHs) with high-order
Optics (including laser optics and quantum optics)
- 2021 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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Complex time method for quantum dynamics when an exceptional point is encircled in the parameter space
as an exceptional point is encircled in the parameter space of the Hamiltonian. The basic idea of the complex time method is using complex contour integration to perform the first-order of an exceptional point...
Optics (including laser optics and quantum optics)
- 2022 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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Exceptional points near first- and second-order quantum phase transitions
of exceptional points (EPs) of the Hamiltonian in the complex-extended parameter domain. Analyzing first-and second-order QPTs in the Lipkin-Meshkov-Glick model we find an exponentially and polynomially close approach of E...
Physical sciences
- 2018 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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