In this section, we investigate the non-Markovian framework, beginning with a thorough analysis of the one-photon model before extending to the two-photon scenario. This approach allows us to examine the manifestation of non-Markovian effects…
Category: 4. Physics
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Resolving the phase of Fano resonance wave packets with photoelectron frequency-resolved optical gating
Understanding and controlling electron dynamics at ultrafast timescales is a cornerstone of modern photonics and quantum control. Photoionization at energies lying between the numerous ionization thresholds of multi-electron systems invariably…
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Collapse of the standard ferromagnetic domain structure in hybrid Co/Molecule bilayers
Experiment: colossal enhancement of the coercive fields
We start by investigating the modifications induced to the in-plane magnetic properties of Co thin films (d = 3, 5, and 7 nm) interfaced with two different molecular species, namely…
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Highly stable two-level current fluctuation in complex oxide heterostructures
Two-level quantum system
Normal RTN is based on the presence of two energetically different but related states in an electronic system (Fig. 1a). The most well-known mechanism involves the TLS based on the charge trapping and detrapping of VO in…
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Quantum dynamics simulation of exciton-polariton transport
First, we study the quantum dynamics of EP transport an “ideal” organic microcavity model without static disorder (cf. Fig. 1a). The cavity and molecular parameters are chosen to closely resemble the Rhodamine microcavity model of ref. 17,…
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Hybrid critical line in the spin-1/2 XX chain with gamma interaction under transverse fields
We begin our study with the ground-state energy density and the energy gap. The ground-state energy density of the system is expressed as:
$$\begin{aligned} E_{G} = \frac{1}{4} \varepsilon _{0,k}, \end{aligned}$$
(6)
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Coherent control of covalent bonding by probe electromagnetic field and structured light pulses
Agarwal, G. S. & Kapale, K. T. Subwavelength atom localization via coherent population trapping Journal of Physics B: Atomic. Molecular and Optical Physics 39, 3437 (2006).
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Cavity-magnon polaritons strongly coupled to phonons
The polaromechanical system
The polaromechanical system is schematically shown in Fig. 1a, which consists of a 3D microwave cavity and a YIG sphere supporting both a magnon mode and a deformation vibration mode. The magnon mode couples to the…
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Long-lived zone-boundary magnons in an antiferromagnet
Sample growth and characterization
High-quality CoTiO3 single crystals were prepared using the floating zone method. Starting ceramic rods of CoTiO3 were prepared by solid state reaction of thoroughly mixed stoichiometric of CoO (99.99%, Alfa…
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Enhanced long wavelength Mermin-Wagner-Hohenberg fluctuations in active crystals and glasses
To explore the enhanced effect of long-wavelength phonon modes in active crystals and glasses, we first computed the mean squared displacement (MSD), 〈Δr2(t)〉 (see Methods for the definition), as a function of time. For the 2dmKA model…
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