Constructing optimal four-level designs via Gray map code
Sign Up to like & getrecommendations! Published in 2019 at "Metrika"
DOI: 10.1007/s00184-018-0685-9
Abstract: Recent research indicates that optimal designs can be constructed based on coding theory. This paper explores the use of Gray map code to construct optimal four-level designs. A general construction of four-level designs is described… read more here.
Keywords: optimal four; map code; level designs; gray map ... See more keywords
Separability and Entanglement in the Hilbert Space Reference Frames Related Through the Generic Unitary Transform for Four Level System
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-017-3658-2
Abstract: Quantum correlations in the state of four-level atom are investigated by using generic unitary transforms of the classical (diagonal) density matrix. Partial cases of pure state, X-state, Werner state are studied in details. The geometrical… read more here.
Keywords: state; reference; generic unitary; entanglement ... See more keywords
Theoretical Investigation of Tunable Goos-Hänchen Shifts in a Four-Level Quantum System
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-018-3763-x
Abstract: Goos-Hänchen (GH) shifts in the reflected and transmitted light have been discussed in a cavity with four-level quantum system. It is realized that the refraction index of intracavity medium can be negative by manipulating the… read more here.
Keywords: level quantum; nchen shifts; goos nchen; quantum system ... See more keywords
Phase Control of Electromagnetically Induced Phase Grating in a Four-Level Inverted Quantum System with Closed-Loop Configuration
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-021-04860-7
Abstract: In this paper, we investigated the electromagnetically induced phase grating in a four-level quantum system with closed loop configuration via relative phase between applied fields. We found that the diffraction intensity can be adjusted via… read more here.
Keywords: grating four; phase; induced phase; four level ... See more keywords
Controlling the sing and magnitude of Kerr nonlinearity in four-level N-type EIT medium
Sign Up to like & getrecommendations! Published in 2017 at "Optik"
DOI: 10.1016/j.ijleo.2017.06.028
Abstract: Abstract Third-order nonlinear susceptibility in a four-level system with N-type configuration is studied by applying the electromagnetically induced transparency (EIT). The system is irradiated with a weak probe and two strong coupling fields. Behaviour of… read more here.
Keywords: kerr nonlinearity; eit; magnitude kerr; four level ... See more keywords
Reliability analysis of the improved four-level assessment standardization for bearing capacity of timber components
Sign Up to like & getrecommendations! Published in 2021 at "Structures"
DOI: 10.1016/j.istruc.2021.04.055
Abstract: Abstract In practical timber engineering, various problems widely exist in the current reliability assessment for the bearing capacity of components. Improving the current assessment standards of timber components has important guiding significance for their design… read more here.
Keywords: four level; level; bearing capacity; timber components ... See more keywords
Two-channel optical bistability and multistability in a degenerate four-level atomic medium under a static magnetic field
Sign Up to like & getrecommendations! Published in 2024 at "Scientific Reports"
DOI: 10.1038/s41598-024-68891-w
Abstract: In this paper, we study the formation of optical bistability (OB) and optical multistability (OM) in a degenerate four-level atomic system by an external magnetic field that is excited by a probe laser field, a… read more here.
Keywords: field; four level; degenerate four; multistability degenerate ... See more keywords
Near dipole-dipole interaction induced control of high-precision three-dimensional atom localization via probe absorption in a four-level phase-coherent atomic medium
Sign Up to like & getrecommendations! Published in 2025 at "Scientific Reports"
DOI: 10.1038/s41598-025-94788-3
Abstract: It is newly proposed that the presence of the near dipole-dipole (NDD) interaction effect in an optically dense atomic ensemble may be very useful for controlling high-precision atom localization. In the present work based on… read more here.
Keywords: atom localization; dipole dipole; four level; near dipole ... See more keywords
Common‐Mode Voltage Analysis and Reduction Method for SiC‐Based Four‐Level Hybrid Clampled Converter
Sign Up to like & getrecommendations! Published in 2025 at "IET Power Electronics"
DOI: 10.1049/pel2.70074
Abstract: The hybrid clamped converter (HCC) is a novel high‐performance four‐level multilevel converter for medium‐voltage motor drives. However, the high common mode voltage (CMV) in motor drives will cause harmful shaft voltages and bearing currents, which… read more here.
Keywords: four level; method; common mode; cmv ... See more keywords
Adaptive four-level modeling of laser cooling of solids
Sign Up to like & getrecommendations! Published in 2021 at "Applied Physics Letters"
DOI: 10.1063/5.0070422
Abstract: X iv :2 10 9. 02 70 2v 1 [ ph ys ic s. op tic s] 6 S ep 2 02 1 Adaptive four-level modeling of laser cooling of solids Weiliang Jin, Cheng Guo,… read more here.
Keywords: level modeling; laser cooling; four level; adaptive four ... See more keywords
Interaction of four level closed loop atomic systems in the presence of two vector beams
Sign Up to like & getrecommendations! Published in 2023 at "Physica Scripta"
DOI: 10.1088/1402-4896/acd968
Abstract: In this manuscript, we have theoretically studied the four level closed loop atomic systems in the presence of two vector beams. A spatially dependent transparency for the probe vector beam is obtained based on the… read more here.
Keywords: vector; loop atomic; level closed; closed loop ... See more keywords