A5076332995- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- Cold Atom Physics and Bose-Einstein Condensates
- Mechanical and Optical Resonators
- Seismic Performance and Analysis
- Quantum Computing Algorithms and Architecture
- Quantum Mechanics and Applications
- Quantum and electron transport phenomena
- Seismic Waves and Analysis
- Photonic and Optical Devices
- Atomic and Subatomic Physics Research
- High-pressure geophysics and materials
- Quantum Chromodynamics and Particle Interactions
- Geotechnical Engineering and Underground Structures
- Topological Materials and Phenomena
- Physics of Superconductivity and Magnetism
- Advanced Fiber Laser Technologies
- Spectroscopy and Chemometric Analyses
- Blockchain Technology Applications and Security
- Identification and Quantification in Food
- Software Engineering Research
- Software Testing and Debugging Techniques
- Geophysics and Sensor Technology
- Force Microscopy Techniques and Applications
- Software Reliability and Analysis Research
Pakistan Institute of Engineering and Applied Sciences
2011-2024
Delft University of Technology
2015-2018
American University of Sharjah
2012-2015
Blockchain is a shared distributed ledger that promises tamper-proof secure transactions over the highly available and resilient network involving multiple participants. Directed Acyclic Graph (DAG) has revolutionized blockchain technology. Owing to its optimized validation mechanism, high scalability, efficient provenance, support for IoT multiparty involvement, DAG rapidly over-shadowing traditional architecture. In this paper, we present comparative analysis of most popular based...
We propose a method to enhance bipartite and tripartite entanglement in cavity magnomechanics using an optical parametric amplifier (OPA). analyze this system identified regimes where different types of are enhanced. show that proper choice the phase leads enhancement entanglements. Moreover, is also significantly enhanced presence OPA. The OPA not only enhances strength but increases domain over wider space detunings as compared when no present. Similarly, robustness against temperature...
Superconducting electronic devices have re-emerged as contenders for both classical and quantum computing due to their fast operation speeds, low dissipation long coherence times. An ultimate demonstration of is lasing. We use one the fundamental aspects superconductivity, ac Josephson effect, demonstrate a laser made from junction strongly coupled multi-mode superconducting cavity. A dc voltage bias provides source microwave photons, while circuit's nonlinearity allows efficient...
We present a scheme to generate distant bipartite and tripartite entanglement between an atomic ensemble yttrium iron garnet (YIG) sphere in coupled microwave cavities. consider single-mode cavity which is with second having YIG sphere. Our system, therefore, has five excitation modes, namely, cavity-1 photons, ensemble, cavity-2 magnon phonon mode the show that significant exists indirectly subsystems cavities robust against temperature. Moreover, we suitable parameters for of magnon,...
We study multiphoton blockade effects in a single-mode cavity interacting with two three-level atoms $\mathrm{\ensuremath{\Lambda}}$ configuration having position-dependent atom-field coupling. consider the of dipole-dipole interaction (DDI) between and show how presence DDI strongly influences blockade. For symmetric coupling field, induces an asymmetry emission spectra as function pump field detuning. At positive detuning, single-photon gets stronger strength, leading to photon...
The Josephson effect is one of the most studied macroscopic quantum phenomena in condensed matter physics and has been an essential part technologies development over last decades. It already used many applications such as magnetometry, metrology, computing, detectors or electronic refrigeration. However, developing devices which induced superconductivity can be monitored, both spatially its magnitude, remains a serious challenge. In this work, we have local gates to control confinement,...
The passage of ultracold three-level atoms through the potential induced by vacuum cavity mode is discussed using cascade atomic configuration. We study tunneling or traversal time via a bimodal high-$Q$ cavity. It found that phase time, which may be considered as measure for required to traverse cavity, exhibits superclassical and subclassical behaviors. Further, dark states interference effects in configuration influence atom
We study the tunneling and traversal of ultracold $\ensuremath{\Lambda}$-type three-level atoms through vacuum-induced potentials in a high-$Q$ mazer cavity. In particular, we discuss effects driving-induced atomic coherence on passage consider phase time to quantum which exhibits interesting features due coherence. For example, negative appears for transmission both excited ground states presence Further, certain values driving field, it is found that shows an alternate subclassical...
In this paper, we study the tunneling and traversal of ultracold two-level atoms through potential induced by vacuum cavity mode. particular, discuss effects off-resonant interaction between mode atomic transition on time a high-$Q$ mazer cavity. The phase which may be considered as an appropriate measure required for atom to cross cavity, exhibits some interesting features in presence interaction. For example, switching sub superclassical behaviors occurs proper choice detuning. Similarly,...
We study the resonant tunneling of ultraslow atoms through a system high quality microwave cavities. find that phase time across two coupled cavities exhibits more frequent resonances as compared to single cavity interaction. The increased are instrumental in display an alternate sub and superclassical character along momentum axis with increasing energies incident slow atoms. Here, intercavity separation appears additional controlling parameter provides efficient control behavior time....
Zero-photon catalysis (ZPC) introduces noiseless attenuation and can be implemented by existing technologies in quantum key distribution (QKD) protocols. In this paper, we present a ZPC-based eight-state measurement-device-independent continuous-variable QKD (MDI-CV-QKD) combined with discrete modulation reverse reconciliation. This ZPC-involved protocol shows better efficiency terms of optimal variances, secret rates, transmission distances, tolerable excess noises, reconciliation compared...
This paper investigated the influence of local geotechnical and geological soil conditions on intensity ground shaking Dubai-Sharjah metropolitan area (DSMA). Acceleration-time histories Dubai Sharjah were chosen according to spectral shape similarity in magnitude distance a target response spectrum that obtained from results Seismic Hazard Analysis (SHA). Subsurface data 72 different sites, located under consideration, used this study. The effect site during earthquake has been evaluated by...
We propose a scheme to study coherent control of the atomic Talbot effect using an N-type four-level system in Raman regime. show that intensity image can be efficiently manipulated Rabi frequency field. However, this manipulation strongly depends on proper choice and field detunings. In particular, sign detuning leads two distinct features. one case, increases up maximum as function field, followed by decreasing trend, while other we find only monotonically trend.
Atom-field interactions, induced by the vacuum of electromagnetic field, exhibit a variety fundamental phenomena and effects. In this paper, we study electromagnetically atomic grating due to state radiation field. Using an ensemble cold atoms, strongly coupled optical cavity, show that probe propagating through medium, diffracts zeroth first-order diffraction peaks with few photons even field cavity mode. As number in increases, intensity peak initially rises then exhibits decreasing trend....
Abstract In this paper, we consider a scheme for electromagnetically induced grating (EIG) in three-level ladder-type system. A microwave field of finite bandwidth making standing-wave pattern is applied on lower levels. addition, have also introduced an indirect pump our weak probe then to study the effects phase diffusion associated with control EIG. It found that strong strongly affect diffraction. We incorporated effect different system parameters such as strength field, pumping...