Creating topological exceptional point by on-chip all-dielectric metasurface [PDF]
Light: Science & ApplicationsClassified as a non-Hermitian system, topological metasurface is one of the ideal platforms for exploring a striking property, that is, the exceptional point (EP).
Cheng Yi +9 more
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Spectral properties of two superconducting artificial atoms coupled to a resonator in the ultrastrong coupling regime [PDF]
Nature CommunicationsWe experimentally investigate a superconducting circuit composed of two flux qubits ultrastrongly coupled to a common L C resonator. Owing to the large anharmonicity of the flux qubits, the system can be described well by a generalized Dicke Hamiltonian ...
A. Tomonaga +5 more
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Mechanisms for the emergence of Gaussian correlations
SciPost Physics, 2022 We comprehensively investigate two distinct mechanisms leading to memory loss of non-Gaussian correlations after switching off the interactions in an isolated quantum system undergoing out-of-equilibrium dynamics.
Marek Gluza, Thomas Schweigler, Mohammadamin Tajik, João Sabino, Federica Cataldini, Frederik S. Møller, Si-Cong Ji, Bernhard Rauer, Jörg Schmiedmayer, Jens Eisert, Spyros Sotiriadis
doaj +1 more source
Sensitive Absorption Imaging of Single Atoms in Front of a Mirror [PDF]
, 2013 In this paper we show that the sensitivity of absorption imaging of ultracold atoms can be significantly improved by imaging in a standing-wave configuration.
Spreeuw, Robert J. C. +1 more
core +8 more sources
Photonic integrated beam delivery for a rubidium 3D magneto-optical trap
Nature Communications, 2023 Cold atoms are important for precision atomic applications including timekeeping and sensing. The 3D magneto-optical trap (3D-MOT), used to produce cold atoms, will benefit from photonic integration to improve reliability and reduce size, weight, and ...
Andrei Isichenko +5 more
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Tunable one-dimensional microwave emissions from cyclic-transition three-level atoms [PDF]
, 2010 By strongly driving a cyclic-transition three-level artificial atom, demonstrated by such as a flux-based superconducting circuit, we show that coherent microwave signals can be excited along a coupled one-dimensional transmission line.
Jia, W. Z., Wang, Z. D., Wei, L. F.
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Optimal control for generating excited state expansion in ring potential
Open Physics, 2020 We applied an optimal control algorithm to an ultra-cold atomic system for constructing an atomic Sagnac interferometer in a ring trap. We constructed a ring potential on an atom chip by using an RF-dressed potential.
Yu Hoon, Kim Seung Jin, Kim Jung Bog
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Quantum state reconstruction on atom-chips
New Journal of Physics, 2015 We realize on an atom-chip, a practical, experimentally undemanding, tomographic reconstruction algorithm relying on the time–resolved measurements of the atomic population distribution among atomic internal states.
C Lovecchio +7 more
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Trapping and coherent manipulation of a Rydberg atom on a microfabricated device: a proposal [PDF]
, 2005 We propose to apply atom-chip techniques to the trapping of a single atom in a circular Rydberg state. The small size of microfabricated structures will allow for trap geometries with microwave cut-off frequencies high enough to inhibit the spontaneous ...
Andersen +36 more
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Efficient on-chip source of microwave photon pairs in superconducting circuit QED [PDF]
, 2006 We describe a scheme for the efficient generation of microwave photon pairs by parametric downconversion in a superconducting transmission line resonator coupled to a Cooper pair box serving as an artificial atom.
Marquardt, Florian
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