Article
Optics
G. J. Delben, M. W. Beims, M. G. E. da Luz
Summary: This paper discusses the difficulties and methods to overcome them in quantum control of a two-level system under the influence of both Markovian and non-Markovian noise. The results show that for Markovian noise, the breakdown time decreases with the decay rate ⠂ not as an exponential but as a power law, indicating that stronger coupling between the system and the environment allows for quantum control. Moreover, for non-Markovian noise, the breakdown time is longer when there is backflow, i.e., ⠂(t) can be negative. These results reveal favorable scenarios for operating qubits in a noisy medium.
Article
Optics
G. J. Delben, M. W. Beims, G. E. da Luz
Summary: This paper discusses the quantum control problem of a two-level system under the influence of both Markovian and non-Markovian noise, and proposes solutions such as employing a fast control scheme or controlling the off-diagonal terms of the system density matrix. The experimental results reveal that the breakdown time of quantum control is related to the coupling strength under Markovian noise, and is longer when there is backflow under non-Markovian noise.
Article
Physics, Multidisciplinary
G. Tucci, E. Roldan, A. Gambassi, R. Belousov, F. Berger, R. G. Alonso, A. J. Hudspeth
Summary: Modeling noisy oscillations of active systems is a challenge in physics and biology. A linear stochastic model driven by non-Markovian bistable noise is proposed and shown to generate self-sustained periodic oscillation. Experimental data on hair bundles in bullfrog sacculus support this minimal model accurately describing bistable-like oscillatory motion.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Wei Wu, Si-Yuan Bai, Jun-Hong An
Summary: Quantum sensing explores protocols using the quantum resource of sensors to achieve highly sensitive measurements. A nonunitary-encoding optical sensing scheme is proposed to measure the spectral density of a quantum reservoir, which surprisingly improves precision by utilizing encoding time as a resource and leveraging sensor squeezing to surpass the shot-noise limit through the formation of a sensor-reservoir bound state. This scheme enriches the family of quantum sensing and provides efficient ways to measure quantum reservoirs, potentially offering insightful support for decoherence control.
Article
Materials Science, Multidisciplinary
Balazs Gulacsi, Guido Burkard
Summary: We describe temporally correlated noise processes that influence the idle evolution of a superconducting transmon qubit. Based on quantum circuit theory, we model the composite qubit-environment system and derive a circuit Hamiltonian for transverse noise affecting the qubit. Using the time-convolutionless projection operator method, we construct a time-local master equation that exhibits eternally non-Markovian dynamics. By expressing the solution of the master equation in the Kraus representation, we identify two crucial non-Markovian phenomena: periodic revivals of coherence and the appearance of additional frequencies far from the qubit frequency.
Article
Physics, Applied
Haimeng Zhang, Bibek Pokharel, E. M. Levenson-Falk, Daniel Lidar
Summary: This study utilizes a simple model called the post-Markovian master equation to accurately capture and predict non-Markovian noise in a superconducting qubit system. The model also allows for the extraction of information about crosstalk and measures of non-Markovianity.
PHYSICAL REVIEW APPLIED
(2022)
Article
Quantum Science & Technology
Akram Youssry, Hendra Nurdin
Summary: In this paper, the problem of open-loop control of a qubit coupled to an unknown fully quantum non-Markovian noise is investigated. A graybox model obtained from measurement data is utilized to approximate the unknown quantum noise. The estimated model is then used for calculating the open-loop control pulses under constraints on amplitude and timing. Gradient descent and genetic optimization methods are explored for pulse optimization. The impact of finite sampling on estimating expectation values of observables is considered, and results for single- and multi-axis control of a qubit are presented.
QUANTUM SCIENCE AND TECHNOLOGY
(2023)
Article
Physics, Applied
Ning Zhang, Chong Chen, Si-Yuan Bai, Wei Wu, Jun-Hong An
Summary: In this study, we propose a non-Markovian quantum thermometry method using a continuous-variable system as a thermometer, which can effectively measure low temperatures at the quantum level. By discovering the mechanism that quantum criticality causes the sensing error to vary with temperature, the divergence problem of errors is avoided.
PHYSICAL REVIEW APPLIED
(2022)
Article
Quantum Science & Technology
Sandeep Mishra, Kishore Thapliyal, Anirban Pathak
Summary: This study rigorously investigates the relationships between resource theoretic measures of quantum coherence, focusing on the maximum and minimum attainable coherence of two-qubit X states for quantum teleportation in noisy environments. It reveals that different states lose their form and usefulness under dephasing and dissipative noise, except for MNMSs which remain useful.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Physics, Fluids & Plasmas
Aimin Chen, Huahai Qiu, Tianhai Tian, Tianshou Zhou
Summary: A generalized fluctuation-dissipation theorem (gFDT) is proposed for non-Markovian reaction networks, which allows for the evaluation of fluctuations in these networks. By using a generalized chemical master equation (gCME), the solution for the linear noise approximation of the stationary gCME can be obtained. Example analysis confirms the effectiveness of the gFDT in tracing noisy sources in non-Markovian reaction networks.
Article
Multidisciplinary Sciences
Yu-Xin Wang, Aashish A. Clerk
Summary: Through the back-action of the qubit on the bath, it is possible to infer the spectral function of the bath. Quantum sensing protocols that exploit the dephasing of a probe qubit are powerful and widely used methods for interrogating unknown environments.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
Jing Nie, Yingshuang Liang, Biao Wang, Xiuyi Yang
Summary: The study investigates the open-system dynamics of a spin-qubit in competing Markovian and non-Markovian environments, finding that the energy mismatch plays a significant role in dynamics transitions. By controlling the number of outer spins and coupling strength, transitions from Markovian to non-Markovian with speedup can be achieved. The increase in the number of decoherence channels enhances non-Markovianity and speeds up the evolution of the spin-qubit.
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2021)
Article
Optics
K. Goswami, C. Giarmatzi, C. Monterola, S. Shrapnel, J. Romero, F. Costa
Summary: In this paper, a more efficient method is proposed to estimate non-Markovianity using machine learning models, quantified by an information-theoretic measure, with tomographically incomplete measurement. The model was tested in a quantum optical experiment and achieved a 90% accuracy in predicting the non-Markovianity measure, paving the way for efficient detection of non-Markovian noise in large scale quantum computers.
Article
Physics, Multidisciplinary
Anita Dabrowska, Dariusz Chruscinski, Sagnik Chakraborty, Gniewomir Sarbicki
Summary: The evolution of a two-level system interacting with a single-photon wave packet shows phase covariant qubit evolution. Temporal correlations in the input field induce nontrivial memory effects for the qubit evolution. In the resonant case, if the time-local generator is regular, the qubit evolution does not display information backflow, but in general the generator might lead to intricate non-Markovian effects.
NEW JOURNAL OF PHYSICS
(2021)
Article
Physics, Multidisciplinary
Yan Wang, Ze-Yan Hao, Jia-Kun Li, Zheng-Hao Liu, Kai Sun, Jin-Shi Xu, Chuan-Feng Li, Guang-Can Guo
Summary: This study experimentally observed the non-Markovian evolution of EPR steering and confirmed the key role of memory effect in its sudden death and revival processes. The unsteerable feature was strictly verified during the non-Markovian evolution. This Letter provides insightful understanding of the applications of EPR steering in quantum open systems.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Applied
C. Guarcello, R. Citro, F. Giazotto, A. Braggio
Summary: In this theoretical study, we investigate the behavior of the critical current of a thermally biased tunnel Josephson junction with a unique design. By independently modifying the superconducting gaps through magnetic fluxes, we demonstrate a magnetically controllable response of the critical current. Additionally, we discuss the optimal working conditions and the high sensitivity of the critical current to small changes in magnetic flux, highlighting the performance of a magnetic flux-to-critical current transducer with a high transfer function that depends on various factors.
PHYSICAL REVIEW APPLIED
(2022)
Article
Mathematics, Applied
Artem Ryabov, Martin Zonda, Tomas Novotny
Summary: High-gain microwave amplifiers operating near quantum limit are crucial for the development of quantum technology. This paper presents a response theory for such amplifiers based on the nonlinear oscillations of an unshunted Josephson junction. The theory takes into account the interplay between fluctuations and nonlinear dynamics, and derives the amplifier gain and noise spectrum.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2022)
Article
Chemistry, Multidisciplinary
Vaibhav Varade, Golam Haider, Artur Slobodeniuk, Richard Korytar, Tomas Novotny, Vaclav Holy, Jiri Miksatko, Jan Plsek, Jan Sykora, Miriam Basova, Martin Zacek, Martin Hof, Martin Kalbac, Jana Vejpravova
Summary: We demonstrate a class of layered valley-spin hybrid (VSH) materials composed of a monolayer two-dimensional (2D) semiconductor and double-decker single molecule magnets (SMMs). The interaction of the VSH components gives rise to the intersystem crossing of the photogenerated carriers and moderate p-doping of the MoS2 monolayer. By helicity-resolved photoluminescence (PL) microspectroscopy, we observed enhanced A exciton-related valley emission at room temperature and elucidated the mechanism behind it. Our study shows the experimental feasibility and great promises of ultrathin VSH materials for opto-spintronic, valleytronic, and quantum information concepts.
Article
Physics, Applied
Gaia Germanese, Federico Paolucci, Giampiero Marchegiani, Alessandro Braggio, Francesco Giazotto
Summary: Recent theoretical predictions suggest that a superconducting tunnel junction can exhibit bipolar thermoelectric phenomena by breaking nonequilibrium spontaneous particle-hole symmetry in the presence of a large thermal gradient, leading to the realization of a thermoelectric Josephson engine.
PHYSICAL REVIEW APPLIED
(2023)
Article
Physics, Applied
A. Hijano, F. S. Bergeret, F. Giazotto, A. Braggio
Summary: Recent studies have shown the potential for bipolar thermoelectricity in superconducting tunnel junctions with asymmetric energy gaps. The thermoelectric performance of these systems is significantly impacted by the inverse proximity effects present in the normal-superconducting bilayer. Directly tunnel-coupling the normal metal side of the cold bilayer with the hot superconductor is found to be more advantageous compared to the scheme used in experiments.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Federico Paolucci, Gaia Germanese, Alessandro Braggio, Francesco Giazotto
Summary: We propose a passive single-photon detector based on the bipolar thermoelectric effect occurring in tunnel junctions between two different superconductors. This detector converts the absorption of a single photon into an open circuit thermovoltage. It has the potential to reveal single photons in a frequency range of 15 GHz to 150 PHz, depending on design and materials, and can be viewed as a digital single-photon detector. It has a wide frequency range and could have practical applications in quantum science and technology.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
L. Bernazzani, G. Marchegiani, F. Giazotto, S. Roddaro, A. Braggio
Summary: We study the thermoelectric properties of a hybrid nanodevice consisting of two-dimensional carbon-based material and a superconductor. This system exhibits nonlinear bipolar thermoelectricity due to the spontaneous breaking of particle-hole symmetry in a tunnel junction between bilayer graphene and a Bardeen-Cooper-Schrieffer superconductor. The most interesting feature of this effect is its bipolarity. The ability to control the bilayer graphene gap guarantees improved thermoelectric performance, reaching up to 1 mV/K for the Seebeck coefficient, and a power density of 1 nW/μm2 for temperature gradients of tens of kelvin. The predicted robustness of this system could lead to further experimental investigations and applications in the near future, thanks to the available nanofabrication techniques.
PHYSICAL REVIEW APPLIED
(2023)
Article
Physics, Applied
A. Hijano, F. S. Bergeret, F. Giazotto, A. Braggio
Summary: Asymmetric superconducting tunnel junctions with Lambda 1 > Lambda(2) exhibit a peculiar nonlinear bipolar thermoelectric effect due to the spontaneous breaking of electron-hole symmetry. This effect is maximized at the matching-peak bias vertical bar V vertical bar = V-p = (Delta - Delta(2))/e. This paper investigates the interplay of photon-assisted tunneling and bipolar thermoelectric generation, showing how thermoelectricity is supported by photon absorption and emission processes at the frequency-shifted sidebands.
PHYSICAL REVIEW APPLIED
(2023)
Article
Nanoscience & Nanotechnology
Artur O. Slobodeniuk, Petr Koutensky, Miroslav Bartos, Frantisek Trojanek, Petr Maly, Tomas Novotny, Martin Kozak
Summary: By utilizing coherent optical interactions, the degeneracy of exciton energies in low-dimensional semiconductors can be lifted, leading to higher speed limits for conventional electronics.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Physics, Multidisciplinary
Gianmichele Blasi, Geraldine Haack, Vittorio Giovannetti, Fabio Taddei, Alessandro Braggio
Summary: Robust and tunable topological Josephson junctions are important for investigating the anomalous Josephson effect and topological quantum computation applications. In this work, a robust and electrostatically tunable TJJ is proposed by combining the physics of the integer quantum Hall regime and superconductors. The existence of protected zero-energy crossings, controlled through electrostatic external gates, is demonstrated.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Martin Zonda, Peter Zalom, Tomas Novotny, Georgios Loukeris, Jakob Baetge, Vladislav Pokorny
Summary: We present an exactly solvable effective model of a double quantum dot coupled to superconducting leads. This model provides quantitatively correct predictions for quantum phase transitions, bound states, and Josephson supercurrents. It allows fast and reliable parameter scans, and can identify previously unnoticed phase diagram regimes.
Article
Materials Science, Multidisciplinary
A. O. Slobodeniuk, P. Koutensky, M. Bartos, F. Trojanek, P. Maly, T. Novotny, M. Kozak
Summary: We report on the theoretical and experimental investigation of valley-selective optical Stark and Bloch-Siegert shifts of exciton resonances in monolayers WSe2 and MoS2 induced by strong circularly polarized nonresonant optical fields. We predict and observe transient shifts of both 1sA and 1sB exciton transitions in the linear interaction regime, and explain the polarization dependence of the shifts through a theoretical model.
Correction
Materials Science, Multidisciplinary
A. Kadlecova, M. Zonda, T. Novotny
Article
Materials Science, Multidisciplinary
Fredrik Brange, Aydin Deger, Christian Flindt
Summary: In this study, a nonequilibrium phase transition in a single-electron micromaser is investigated. By analyzing the dynamical zeros of the factorial moment generating function of the electronic charge transport statistics, the researchers find that the phase transition can be predicted from short-time measurements of the higher-order factorial cumulants.
Article
Quantum Science & Technology
Artur Slobodeniuk, Tomas Novotny, Radim Filip
Summary: Quantum coherence is a crucial resource for surpassing classical physics and technology. It has been proposed that quantum coherence of a spin can be induced in a low-temperature environment without the need for external coherent pumping. By weakly coupling to an output system and dynamically affecting the spin-environment coupling, it is possible to extract such coherence. Comparisons between internal spin coherence and output coherence over temperature and characteristic frequencies are made. This proposed optimal coherence extraction opens up avenues for experimental tests with atomic and solid-state systems.
Article
Nanoscience & Nanotechnology
Spyridon G. Kosionis, Emmanuel Paspalakis
Summary: In this study, we theoretically investigate the pump-probe response and the four-wave mixing spectrum in a hybrid system composed of a semiconductor quantum dot and a spherical metal nanoparticle. Using a density matrix methodology, we calculate the absorption/gain, dispersion, and four-wave mixing spectra, and analyze their spectral characteristics. We also apply the metastate theory and the dressed-state picture to predict the positions of the spectral resonances.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
L. S. Lima
Summary: This study investigates quantum correlation and entanglement in the non-Hermitian Hubbard model. By analyzing quantum entanglement measures such as entanglement negativity and entropy, the effect of non-Hermitian imaginary hopping on the system is explored. It is found that in the large... limit, the non-Hermiticity reverses the behavior of the ground state energy and low-lying excitations.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Nam-Chol Ri, Chung-Sim Kim, Sang-Ryol Ri, Su-Il Ri
Summary: By decreasing the lattice thermal conductivity of GNR through chemical derivation and strain, enhancing the thermoelectric properties of the electron part can be an important method to approach PGEC. This paper proposes synthesized hybrid systems formed by chemical derivation in the middle parts of b-AGNRs, and investigates the band structures and thermoelectric properties of the electron part under different strains. The results show that the band gaps of the systems significantly increase under different strains.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Le T. T. Phuong, Tran Cong Phong
Summary: This study investigates the effects of gas molecules adsorbed on /312-borophene on its electronic heat capacity and thermal Schottky anomaly. The results show that the adsorbed gas molecules have different impacts on the electronic heat capacity, leading to the generation of various new energy levels.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Tianyan Jiang, Jie Fang, Wentao Zhang, Maoqiang Bi, Xi Chen, Junsheng Chen
Summary: This paper investigates the adsorption and sensing properties of transition metal-doped WSSe gas-sensitive devices towards H2, CO, and CO2 gases related to thermal runaway in Li-ion batteries using density functional theory. The results show that Ti, Mn, and Mo dopants preferentially bind to the S-surface of the WSSe monolayer, and all three monolayers exhibit significantly improved sensing characteristics, with chemisorption towards CO. Band structure analysis suggests that the Ti-WSSe monolayer has the potential to be used as a resistive CO detection sensor. Recovery time calculations indicate the reuse capabilities of the gas-sensitive devices. Mn-WSSe monolayer shows potential for H2 detection, while Mo-WSSe monolayer is more suitable for CO2 detection. This work lays the foundation for potential gas-sensitive applications of WSSe monolayer in thermal runaway scenarios, advancing research in gas sensing domains.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Olga A. Alekseeva, Aleksandr A. Naberezhnov, Ekaterina Yu. Koroleva, Aleksandr Fokin
Summary: This study investigates the temperature dependence of crystal structure and dielectric response in a nanocomposite material containing porous glasses and embedded sodium nitrate. The results reveal a crossover point in the temperature dependence of the order parameter of the structural transition in sodium nitrate nanoparticles, as well as a decrease in activation energy of sodium ions hopping conductivity during heating.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Lijun Cheng, Fang Cheng
Summary: This paper investigates the effects of electric and magnetic fields on the Goos-Hanchen (GH) shift in a semi-Dirac system. The results show that the magnitude and direction of the GH shift depend on various factors such as incidence angle, electric barrier height and width, and magnetic field. It is observed that there is a saltus step in GH shifts at the critical magnetic field, which decreases with increased potential barrier thickness. Additionally, the GH shift can be significantly enhanced by applying an electric field in the III region. These findings are important for the development of semi-Dirac based electronic devices.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Alexander K. Fedotov, Uladzislaw E. Gumiennik, Julia A. Fedotova, Janusz Przewoznik, Czeslaw Kapusta
Summary: The study conducted an improved analysis of carrier transport in single-layer graphene and hybrid structures, showing the coexistence of negative and positive contributions in magnetoresistive effect. Various models were used to analyze the dependences on temperature and magnetic field, providing insights into the behavior of electrical resistance in the structures.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Xuhui Peng, Tao Chen, Ruotong Chen, Shizheng Chen, Qing Zhao, Xiaoping Huang
Summary: In this study, a novel method was proposed to design and fabricate optoelectronic devices with highly precise controlled photorefractive liquid crystal structures. By utilizing quantum dots and electric tuning, a regular periodic grating was formed in a quantum dot-doped liquid crystal volume illuminated by a laser standing evanescent wave field. The obtained optical diffraction pattern showed equally spaced light spots and high diffraction efficiency, indicating a significant change in the refractive index of the nanostructured device.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Kai-Hua Yang, Xiao-Hui Liang, Huai-Yu Wang, Yi-Fan Wu, Qian-Qian Yang
Summary: In this work, a theoretical model is proposed to achieve the controllability of quantum interference and decoherence. The effects of intralead Coulomb interaction, interdot tunneling, and electron-phonon interactions on differential conductance are investigated. The results show the appearance of destructive interference, Fano interference, and negative differential conductance in strong dot-lead tunneling regions, while a characteristic pattern of positive and negative differential conductances appears in the weak dot-lead tunneling regime.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Xueying Wang, Qian Ma, Qi Zhang, Yi Wang, Lingyu Li, Dongheng Zhao, Zhiqiang Liu
Summary: Porous double-channel alpha-Fe2O3/SnO2 heterostructures with tunable surface/interface transport mechanism were successfully fabricated by electrospinning and calcination. These heterostructures exhibited a large specific surface area, providing more active sites and enhanced adsorption capacity. The optimal composite materials showed the highest response value and the fastest response/recovery times to DMF, along with good cycling performance, long-term stability, and high gas selectivity.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Donglin Guo, Zhengmeng Xu, Chunhong Li, Kejian Li, Bin Shao, Xianfu Luo, Jianchun Sun, Yilong Ma
Summary: Using full electron-phonon interactions and the Boltzmann transport equation, this study investigates the phonon scattering channel and electrical properties of graphene under anharmonic phonon renormalization (APRN). The results show that the APRN reduces the phonon frequency and three-phonon phase space with increasing temperature, affecting the acoustic branch more than the optical branch. The thermal conductivity of graphene decreases after considering three- and four-phonon scattering, and the primary scattering channels are identified. Furthermore, the APRN increases the strength of electron-phonon coupling and leads to an increase in n-type electric resistance at room temperature.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Hongping Zhao, Man Zhao, Dayong Jiang
Summary: The study proposes a broadband photodetector with high response, high sensitivity, and controllable band by integrating quantum dots and highly conductive materials. The PD composed of ZnO film/PbS quantum dots heterostructure shows excellent photoresponse performance in the UV-Vis-NIR range, with the peak responsivity increased by 550%, accompanied by significant red shift, faster response, and recovery speed. By using RF magnetron sputtering to prepare ultra-thin ZnO film, the impact of PbS quantum dots on the photoelectric properties of ZnO film is comprehensively and systematically discussed.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Ye Xuan Meng, Liwei Jiang, Yisong Zheng
Summary: Manipulating magnetism by electrical means is an effective method for realizing ultra-low power spintronic-integrated circuits. In this study, it is demonstrated that the two-dimensional semiconductor material InO monolayer can be tuned to a half-metallic state by applying a gate voltage, providing theoretical guidance for adjusting two-dimensional magnetic semiconductors.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Anusha Kachu, Aalu Boda
Summary: In this research, we investigated the impact of confinement nature on a neutral hydrogenic donor impurity in a quantum dot. The study demonstrated intriguing behavior in response to changes in potential shape, quantum dot parameters, and spin-orbit coupling strengths. The findings provide valuable insights into the fundamental physics of quantum dots and impurities and can aid in the design and optimization of QD-based technologies.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
