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A compact and laser-induced source of ultracold strontium atoms
Published 2021“…Strontium has been progressively viewed as an unmissable source of ultracold atoms, with its widespread popularity gaining traction nowadays in the form of optical lattice clocks for frequency and time standards. …”
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Final Year Project (FYP) -
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3
Reconfigurable self-sufficient traps for ultracold atoms based on a superconducting square
Published 2013“…We report on the trapping of ultracold atoms in the magnetic field formed entirely by persistent supercurrents induced in a thin film type-II superconducting square. …”
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Journal Article -
4
Optically tailored trapping geometries for ultracold atoms on a type-II superconducting chip
Published 2019“…Superconducting atom chips have very significant advantages in realizing trapping structures for ultracold atoms compared to conventional atom chips. …”
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Journal Article -
5
Density dependence of the ionization avalanche in ultracold Rydberg gases
Published 2014“…We report on the behavior of the ionization avalanche in an ensemble of ultracold 87Rb atoms coupled to a high-lying Rydberg state and investigate extensions to the current model by including the effects of three-body recombination and plasma expansion. …”
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Journal Article -
6
Evolution of an ultracold gas in a non-Abelian gauge field: finite temperature effect
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Journal Article -
7
Weyl points and topological nodal superfluids in a face-centered-cubic optical lattice
Published 2018“…We point out that a face-centered-cubic (fcc) optical lattice, which can be realized by a simple scheme using three lasers, provides one a highly controllable platform for creating Weyl points and topological nodal superfluids in ultracold atoms. In noninteracting systems, Weyl points automatically arise in the Floquet band structure when shaking such fcc lattices, and sophisticated design of the tunneling is not required. …”
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Journal Article -
8
Programmable trap geometries with superconducting atom chips
Published 2014“…Our studies show that superconductors in the remanent state provide a versatile platform for atom optics and applications in ultracold quantum gases.…”
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Journal Article -
9
Superconducting atom chips : towards quantum hybridization
Published 2019“…Atomic-superconducting hybrid systems are of particular interest as they are combining the long coherence times of ultracold atoms and fast gate operation times of superconducting circuits. …”
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Journal Article -
10
Vortex based atom traps and atomic electrometry on a superconducting atom chip
Published 2014“…Afterwards, a focus is shifted from the magnetic fi eld towards the electric fi eld of the superconducting atom chip. By using the Rydberg state of the rubidium atom, we perform Rydberg spectroscopy to measure the electric field above the atom chip at room temperature and cryogenic temperature. …”
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Thesis -
11
Design of an experimental platform for hybridization of atomic and superconducting quantum systems
Published 2019“…Of particular interest is the hybridization between atomic and superconducting qubits. We demonstrate an experimental setup for transferring and trapping ultracold atoms inside a millikelvin cryogenic environment, where interactions between atomic and superconducting qubits may be established, paving the way for hybrid quantum systems. …”
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Journal Article -
12
Dark-state sideband cooling in an atomic ensemble
Published 2021“…We utilize the dark state in a ∧-type three-level system to cool an ensemble of ⁸⁵Rb atoms in an optical lattice [Morigi et al., Phys. …”
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Journal Article -
13
Tailored optical potential for 87Rb atoms
Published 2015“…The other 90% power passes through an astronomical telescope acting as a 4-f relay optics to reduce the beam diameter before being focused down to a spot of few tens of micrometer by a 50x objective lens for ultracold atom coupling.…”
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Final Year Project (FYP) -
14
Single atom in a superoscillatory optical trap
Published 2023“…We argue that superoscillatory trapping and continuous potential tuning offer not only a way to generate compact and tenable ensembles of trapped atoms for quantum simulators but will also be useful in single molecule quantum chemistry and the study of cooperative atom-photon interactions within subwavelength arrays of quantum emitters.…”
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Journal Article -
15
Aharonov-Bohm effect in mesoscopic Bose-Einstein condensates
Published 2020“…Here, we propose using ultracold atoms in light-shaped potentials to feasibly realize a cold-atom device to study one of the fundamental problems of mesoscopic physics, the Aharonov-Bohm effect: the interaction of particles with a magnetic field when traveling in a closed loop. …”
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Journal Article -
16
Investigation of the van der waals interactions in a Bose-Einstein condensate via electromagnetically-induced transparency
Published 2013“…The manifestation of the blockade eff ect with atom number density, with temperature of the atoms and with the principal quantum number of the Rydberg state to which the atoms are excited, is discussed. …”
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Thesis -
17
Dynamics of quantum gas in non-abelian gauge field
Published 2021“…To observe this e ect, we have performed laser cooling in two major steps 461 nm magneto-optical trap (MOT) and 689 nm MOT and then loaded the atoms into an optical dipole trap. After performing optical pumping to one of the Zeeman states of the hyper ne ground-state, while atoms are inside the dipole trap, we have cooled down the strontium-87 atoms via evaporativ cooling and the gas enters the quantum regime at a T/T_F = 0.21(4), with Temperature T and Fermi temperature T_F. …”
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Thesis-Doctor of Philosophy -
18
Breaking of Huygens-Fresnel principle in inhomogeneous Tomonaga-Luttinger liquids
Published 2022“…This is the case for ultracold atoms in a parabolic trap, which serves as our main motivation, and we discuss possible experimental observations in such systems.…”
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Journal Article -
19
A laser system for cooling and trapping of fermionic potassium.
Published 2010“…The cooling laser is then frequency-stabilized to an atomic resonance with AC-locking on a saturation spectroscopy signal. …”
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Final Year Project (FYP) -
20
Half-skyrmion and vortex-antivortex pairs in spinor condensates
Published 2015“…We propose a simple experimental scheme to generate spin textures in the ground state of interacting ultracold bosonic atoms loaded in a two-dimensional harmonic trap. …”
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Journal Article