A5042357479- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Quantum, superfluid, helium dynamics
- Quantum optics and atomic interactions
- Quantum Mechanics and Applications
- Atomic and Subatomic Physics Research
- Quantum and electron transport phenomena
- Advanced Thermodynamics and Statistical Mechanics
- Photonic and Optical Devices
- Mechanical and Optical Resonators
- Advanced Data Storage Technologies
- Neural Networks and Reservoir Computing
- Quantum many-body systems
- Strong Light-Matter Interactions
- Computability, Logic, AI Algorithms
- Advancements in Semiconductor Devices and Circuit Design
- Electricity Theft Detection Techniques
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Laser Technologies
- Smart Grid Security and Resilience
- Advanced Frequency and Time Standards
- Ferroelectric and Negative Capacitance Devices
- Currency Recognition and Detection
Institute of High Performance Computing
2024-2025
Agency for Science, Technology and Research
2024-2025
Singapore Management University
2021-2024
National University of Singapore
2013-2022
Centre for Quantum Technologies
2013-2022
Université de Rennes
2016
Centre National de la Recherche Scientifique
2016
Institute for Physical Research
2010-2012
National Academy of Sciences of Armenia
2011
Atomtronics deals with matter-wave circuits of ultracold atoms manipulated through magnetic or laser-generated guides different shapes and intensities. In this way, new types quantum networks can be constructed in which coherent fluids are controlled the know-how developed atomic molecular physics community. particular, devices enhanced precision, control, flexibility their operating conditions accessed. Concomitantly, simulators emulators harnessing on current flows also developed. Here,...
We study an experimentally feasible qubit system employing neutral atomic currents. Our is based on bosonic cold atoms trapped in ring-shaped optical lattice potentials. The makes the strictly one dimensional and it provides infrastructure to realize a tunable ring-ring interaction. implementation combines low decoherence rates of systems, overcoming single site addressing, with robustness topologically protected solid state Josephson flux qubits. Characteristic fluctuations magnetic fields...
We study the current dynamics of coupled atomic condensates flowing in two ring-shaped optical potentials. provide a specific setup where ring-ring coupling can be tuned experimentally feasible way. It is demonstrated that imaginary time effective action system weak regime provides two-level-system-dynamics for phase slip across rings. Through two-mode Gross- Pitaevskii mean field equations, real population imbalance and difference between thoroughly analyzed analytically, as function...
We consider a correlated Bose gas tightly confined into ring shaped lattice, in the presence of an artificial gauge potential inducing persistent current through it. A weak link painted on acts as source coherent back-scattering for propagating gas, interfering with forward scattered current. This system defines atomic counterpart rf-SQUID: atomtronics quantum interference device. The goal present study is to corroborate emergence effective two-level such setup and assess its quality, terms...
We explore the generation and optimization of entanglement between atoms chirally coupled to finite one-dimensional spin chains, functioning as cavities. By diagonalizing cavity Hamiltonian, we identify a parity effect that influences entanglement, with small even-sized cavities expediting by approximately <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mn>50</a:mn><a:mo>%</a:mo></a:mrow></a:math> faster than nonchiral coupling. Applying classical driving field reveals...
This study investigates the integration of quantum circuits with classical neural networks for enhancing credit scoring small- and medium-sized enterprises (SMEs). We introduce a hybrid quantum–classical model, focusing on synergy between rather than comparing performance separate models. Our model incorporates layer into traditional network, achieving notable reductions in training time. apply this innovative framework to binary classification task proprietary real-world default dataset...
Accurate traffic forecasting plays a crucial role in modern Intelligent Transportation Systems (ITS), as it enables real-time flow management, reduces congestion, and improves the overall efficiency of urban transportation networks. With rise Quantum Machine Learning (QML), has emerged new paradigm possessing potential to enhance predictive capabilities beyond what classical machine learning models can achieve. In present work we pursue heuristic approach explore QML, focus on specific...
This work proposes a scheme for long-distance, high-fidelity transport of entangled states between nodes quantum network. The dissipation-assisted is achieved using chiral waveguide QED and ring resonators. Transport various such as Bell states, multipartite W-states Dicke are demonstrated with high fidelity
A chiral network scheme is modified by the addition of microcavities leading to prediction a boost in concurrence. The protocol expected be robust against experimental imperfections and can implemented state-of-the-art integrated photonic platforms.
Atomtronics deals with matter-wave circuits of ultra-cold atoms manipulated through magnetic or laser-generated guides different shapes and intensities. In this way, new types quantum networks can be constructed, in which coherent fluids are controlled the know-how developed atomic molecular physics community. particular, devices enhanced precision, control flexibility their operating conditions accessed. Concomitantly, simulators emulators harnessing on current flows also developed. Here,...
We study a physical system consisting of Bose–Einstein condensate confined to ring shaped lattice potential interrupted by three weak links. The is assumed be driven an effective flux piercing the lattice. By employing path integral techniques, we explore quantum dynamics in pure phase regime. Moreover, effects density's fluctuations are studied through exact diagonalization analysis spectroscopy Bose–Hubbard model. demonstrate that clear two-level emerges tuning magnetic at degeneracy....
Quantum repeaters hold the promise to prevent photon losses in communication channels. Most recently, serious efforts have been applied achieve scalable distribution of entanglement over long distances. However, probabilistic nature generation and realistic quantum memory storage times make implementation an outstanding experimental challenge. We propose a repeater protocol based on deterministic single atomic ensembles confined distant high-finesse cavities show that this system is capable...
We propose a realization of the quantum transistor for coherent light fields fibre-coupled microdisk cavities. demonstrate by combining numerical and analytical methods that both in strong coupling bad cavity limits it is possible to change system's behaviour from being fully transparent reflective varying amplitude external control field. remark tuning field significantly easier experimental setting than cavity-atom strength which was suggested [Phys. Rev. A 90, 053822 (2014)] two-level...
In this paper we explore the use of quantum machine learning (QML) applied to credit scoring for small and medium-sized enterprises (SME). A quantum/classical hybrid approach has been used with several models, activation functions, epochs other parameters. Results are shown from best model, using two classifiers a classical neural network, data companies in Singapore. We observe significantly more efficient training models over model trained 350 compared 3500 comparable prediction...
Abstract One of the most promising areas research to obtain practical advantage is Quantum Machine Learning which was born as a result cross-fertilisation ideas between Computing and Classical Learning. In this paper, we apply (QML) frameworks improve binary classification models for noisy datasets are prevalent in financial datasets. The metric use assessing performance our quantum classifiers area under receiver operating characteristic curve (ROC/AUC). By combining such approaches...
We study an experimentally feasible qubit system employing neutral atomic currents. Our is based on bosonic cold atoms trapped in ring-shaped optical lattice potentials. The makes the strictly one dimensional and it provides infrastructure to realize a tunable ring-ring interaction. implementation combines low decoherence rates of systems, overcoming single site addressing, with robustness topologically protected solid state Josephson flux qubits. Characteristic fluctuations magnetic fields...
A new method of preparing a single photon in temporally delocalized entangled modes is proposed and analyzed. We show that medium four-level atoms with tripod-level configuration strong parametric interaction between two one-photon pulses emerges, if the was initially prepared coherent superposition ground states, while classical field drives neighbor transition from third state. The analytical solution Maxwell equations reveals under electromagnetically induced transparency (EIT), quantum...
We explore a scheme for entanglement generation and optimization in giant atoms by coupling them to finite one-dimensional arrays of spins that behave as cavities. find high values the concurrence can be achieved small-sized cavities, being time very short. When exciting system external means, optimal is obtained weak drivings. also analyze effect disorder these systems, showing although average decreases with disorder, concurrences still even scenarios presenting strong disorder. This...
We propose a rapid, high-fidelity, and noise-resistant scheme to generate many-body entanglement between multiple qubits stabilized by dissipation into 1D bath. Using carefully designed time-dependent drive, our achieves provably exponential speedup over state-of-the-art dissipative stabilization schemes in <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mn>1</a:mn><a:mi mathvariant="normal">D</a:mi></a:mrow></a:math> baths, which require timescale that diverges as the target...