Entanglement in ladder-plus-Y double quantum dot structure via entropy

Al-Ameri, Hakeem H.; Abdullah, M.; Al-Khursan, Amin H.

doi:10.1364/ao.58.000369

Cited by 23 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As it deals with material properties, this work begins with the calculation of QD energy subbands and then the momenta of transitions to get the results of each structure depending on its specified parameters from the beginning. The WL effect, a quasi-continuum state, on the QD transitions is viewed through the orthogonalized plane wave (OPW), which is inevitable in the QD transitions 34 , 35 . Such calculations are the figure of merit recognizing this work.…”

Section: Resultsmentioning

confidence: 99%

“…This high may relate to two reasons: First, the WL washes out modes other than the condensated main mode 46 . Second, the high flexibility of manipulating DQD states compared to QD states results in more optical properties for DQD 26 , 34 , 47 . From Fig.…”

Section: Resultsmentioning

confidence: 99%

“…This work uses our laboratory software (MAOUD-37) written under MATLAB. It is checked with experimental results in 36 and used in many publications that deal with optical properties like 34,35,37,38 . Some of them deal with plasmonic nanostructures [39][40][41] .…”

Section: Resultsmentioning

confidence: 99%

“…For example, is the momentum for the WL-QD transition in the VB. It is given by 34 , where , are the total wavefunctions of the QD state and WL VB, respectively, while and are those in the -direction, , are the normalization constants of the wavefunctions in the z-direction. Define, …”

Section: Theorymentioning

confidence: 99%

See 3 more Smart Citations

Energy absorbed from double quantum dot-metal nanoparticle hybrid system

Akram

Abdullah

Al-Khursan

2022

Sci Rep

View full text Add to dashboard Cite

This work proposes the double quantum dot (DQD)-metal nanoparticle (MNP) hybrid system for a high energy absorption rate. The structure is modeled using density matrix equations that consider the interaction between excitons and surface plasmons. The wetting layer (WL)-DQD transitions are considered, and the orthogonalized plane wave (OPW) between these transitions is considered. The DQD energy states and momentum calculations with OPW are the figure of merit recognizing this DQD-MNP work. The results show that at the high pump and probe application, the total absorption rate $$({Q}_{tot})$$ ( Q tot ) of the DQD-MNP hybrid system is increased by reducing the distance between DQD-MNP. The high $${Q}_{tot}$$ Q tot obtained may relate to two reasons: first, the WL washes out modes other than the condensated main mode. Second, the high flexibility of manipulating DQD states compared to QD states results in more optical properties for DQD. The $${Q}_{DQD}$$ Q DQD is increased at a small MNP radius on the contrary to the $${Q}_{MNP}$$ Q MNP which is increased at a wider MNP radius. Under high tunneling, a broader blue shift in the $${Q}_{tot}$$ Q tot due to the destructive interference between fields is seen and the synchronization between $${Q}_{MNP}$$ Q MNP and $${Q}_{DQD}$$ Q DQD is destroyed. $${Q}_{tot}$$ Q tot for the DQD-MNP is increased by six orders while $${Q}_{DQD}$$ Q DQD is by eight orders compared to the single QD-MNP hybrid system. The high absorption rate of the DQD-MNP hybrid system comes from the transition possibilities and flexibility of choosing the transitions in the DQD system, which strengthens the transitions and increases the linear and nonlinear optical properties. This will make the DQD-MNP hybrid systems preferable to QD-MNP systems.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

See 2 more Smart Citations

Energy absorbed from double quantum dot-metal nanoparticle hybrid system

Akram

Abdullah

Al-Khursan

2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Such molecules are applicable volunteers for quantum coherence-based studies, because of ease of integration, controlling size and energy level spacing as well as their large bandwidth 34 . In this regard, it has been shown that the optical properties of such systems can depend on the interdot tunneling effect, which has been used for controlling optical bistability 35 , entanglement 36 , 37 , light propagation 38 , 39 and orbital angular momentum transfer 40 . Notice that the QDMs cannot exhibit vibrational or rotational features and they indeed display somewhat different properties with respect to usual molecules.…”

Section: Introductionmentioning

confidence: 99%

Tunneling-induced optical limiting in quantum dot molecules

Veisi

Kazemi

Mahmoudi

2020

Sci Rep

View full text Add to dashboard Cite

We present a convenient way to obtain an optical power limiting behavior in a quantum dot molecule system, induced by an interdot tunneling. Also, the effect of system parameters on the limiting performance is investigated; interestingly, the tunneling rate can affect the limiting performance of the system so that the threshold of the limiting behavior can be a function of the input voltage, allowing the optimization of the limiting action. Furthermore, by investigating the absorption of the probe field, it is demonstrated that the optical limiting is due to a reverse saturable absorption mechanism; indeed, analytical results show that this mechanism is based on a cross-Kerr optical nonlinearity induced by the tunneling. Additionally, the limiting properties of the system are studied by using a Z-scan technique.

show abstract