24 citations · 184 across the 35 of their papers we have counts for
35 papers
Negative refraction with low absorption using EIT in a four-level left-handed atomic system
Shun-Cai Zhao, Zheng-Dong Liu, Gen Li +1
We suggest a scheme for obtaining negative refraction with low absorption in a left-handed atomic system.Under the the appropriate conditions,the atomic system displays negative re…
Negative refraction with absorption suppressed by electromagneticly induced transparency in a left-handed atomic system
Shun-Cai Zhao
This paper intends to realize negative refraction with absorption suppressed by the electromagneticly induced transparency(EIT) in a dense four-level atomic system. Without the two…
Different roles of quantum interference in a quantum dot photocell with two intermediate bands
Shun-Cai Zhao, Jing-Yi Chen, Xin Li
It is generally believed that quantum interference can improve the transport of photo-generated carriers in a photocell, thereby improve the photoelectric conversion efficiency. In…
Left handness in a four-level atomic system
Shuncai Zhao, Zhengdong Liu
A scheme is proposed for realizing simultaneous negative permittivity and negative permeability based on quantum coherence in a four-level dense atomic system here.Under some param…
Transient energy backflow enhanced ergotropy in an open qubit quantum battery assisted by an auxiliary oscillator
Shun-Cai Zhao
Decoherence and dissipation in open quantum systems generally drive quantum batteries toward passive states, thereby reducing their extractable work (ergotropy). Here, we study a d…
Charge-transport enhanced by the quantum entanglement in the Photosystem II reaction center
Ling-Fang Li, Shun-Cai Zhao, Lu-Xin Xu
Revealing the role of quantum entanglement in charge-transport in the Photosystem II reaction center (PSII RC) is of great significance. In this work, we theoretically demonstrate…
2D isotropic negative permeability in a Λ-type three-level atomic system
Shuang-Ying Zhang, Shun-Cai Zhao, Ai-Ling Gong
A approach for two-dimensional(2D) negative permeability in a -type three-level atomic system interacting with a probe magnetic and the superposition of two orthogonal standing-…
Negative refraction index manipulated by a displaced squeezed Fock state in the mesoscopic dissipative left-handed transmission line
Hong-Wei Guo, Shun-Cai Zhao, Xiao-Jing Wei
Negative refractive index (NRI) of the mescopic dissipative left-handed transmission line (LHTL) is manipulated by the displaced squeezed Fock state (DSFS) and the dissipation pres…
2-D isotropic negative refractive index in a N-type four-level atomic system
Shun-Cai Zhao, Qi-Xuan Wu, Kun Ma
2-D(Two-dimensional) isotropic negative refractive index (NRI) is explicitly realized via the orthogonal signal and coupling standing-wave fields coupling the N-type four-level ato…
Effect of Spontaneously Generated Coherence and Detuning on 2D Atom Localization in Two Orthogonal Standing-Wave Fields
Shun-Cai Zhao, Qi-Xuan Wu, Ai-Ling Gong
Two-dimensional (2D) atom localization via the spontaneously generated coherence (SGC) and detunings associated with the probe and standing-wave driving fields in a three-level V-t…
Left-handedness with three zero-absorption windows tuned by the incoherent pumping field and inter-dot tunnelings in a GaAs/AlGaAs triple quantum dots system
Shun-Cai Zhao, Shuang-Ying Zhang, Qi-Xuan Wu +1
Left-handedness with three zero-absorption windows is achieved in a triple-quantum dot (TQD) system. With the typical parameters of a GaAs/AlGaAs heterostructure, the simultaneous…
Effect of spontaneously generated coherence on left-handedness in a degeneracy atomic system
Shun-Cai Zhao
A theoretical investigation is carried out into the effect of spontaneously generated coherence(SGC) on the left-handedness in a four-level Y-type atomic system with two highest ne…
Negative refraction without absorption via both coherent and incoherent fields in a four-level left-handed atomic system
Shun-Cai Zhao, Zheng-Dong Liu, Qi-Xuan Wu
This paper attempts a probe into negative refraction without absorption by means of an incoherent pump field and a strong coherent field coupling the dense four-level atomic system…
Zero absorption and large negative refractive index in a left-handed four-level atomic media
Shuncai Zhao, Zhengdong Liu, Qixuan Wu
In this paper,we have investigated three external fields interacting with the four-level atomic system described by the density-matrix approach.The atomic system exhibits left-hand…
Localization of cold atom within half-wavelength domain
Shun-Cai Zhao, Xin Li, Ping Yang
Simulating the cold atom with a three-level quantum system interacting with two orthogonal standing-wave fields, the localization within half-wavelength domain in the x-y…
Enhanced quantum yields and efficiency in a quantum dot photocell modeled by a multi-level system
Shun-Cai Zhao, Jing-Yi Chen
To absorb the photons below the band-gap energy effectively, we proposed a quantum dot (QD) photocell modeled by multi-level system for the quantum yields and photo-to-charge effic…
Radiative recombination rate suppressed in a quantum photocell with three electron donors
Jing-Yi Chen, Shun-Cai Zhao
The radiative recombination of electron-hole pairs represents a great challenge to the photon-to-charge efficiency in photocell. In this paper, we visit the radiative recombination…
Photovoltaic performances in a cavity-coupled double quantum dots photocell
Sheng-Qiang Zhong, Shun-Cai Zhao, Sheng-Nan Zhu
Revealing the quantum regime of photovoltaics is crucial to enhancing the internal quantum efficiency of a double quantum dots (DQDs) photocell housed in a cavity. In this study, t…
Algebraic analysis of electromagnetic chirality-induced negative refractive index in a four-level atomic system
Shun-Cai Zhao, Qi-Xuan Wu, Ai-Ling Gong
This paper presents a algebraic analysis of electromagnetic chirality-induced negative refractive index in a four-level atomic medium. According to analyze mathematically its argum…
Left-handedness in the balanced/unbalanced resonance conditions of a quantized composite right-left handed transmission line
Xiao-Jing Wei, Shun-Cai Zhao
Left-handedness signifies negative permittivity () and permeability ((μ_r)) in the same frequency band. The and are evaluated in a quantized co…
High quantum yields generated by a multi-band quantum dot photocell
Shun-Cai Zhao, Qi-Xuan Wu
We perform the quantum yields in a multi-band quantum dot (QD) photocell via doping an intermediate band (IB) between the conduction band (CB) and valence band (VB). Under two diff…
Negative refraction with little loss manipulated by the voltage and pulsed laser in double quantum dots
Shun-Cai Zhao, Xiao-fan Qian, Ya-Ping Zhang +1
The paper demonstrates that negative refractive index can be achieved via tuning the tunneling rate between a double quantum dots(QDs) system by applying a bias voltage, and a puls…
Dual peaks evoluting into single-peak for sub-wavelength 2-D atom localization in a V-type atomic system
Shun-Cai Zhao, Xin Li, Ping Yang
The atom localization of a V-type atomic system is discussed by the detunings associated with the probe and the two orthogonal standing-wave fields, and by the spontaneously genera…
Photovoltaic properties enhanced by the tunneling effect in a coupled quantum dot photocell
Sheng-Qiang Zhong, Shun-Cai Zhao, Sheng-Nan Zhu
Double quantum dots (DQDs) have emerged as versatile and efficient absorbing light devices owing to their more multiple adjusting parameters than the single QD's. Using the system-…