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Photoassociation and the Feshbach resonance are, in principle, feasible means for creating a molecular Bose-Einstein condensate from an already-quantum-degenerate gas of atoms; however, mean-field shifts and irreversible decay place…

Atomic Physics · Physics 2009-11-07 Matt Mackie

We apply three machine learning strategies to optimize the atomic cooling processes utilized in the production of a Bose-Einstein condensate (BEC). For the first time, we optimize both laser cooling and evaporative cooling mechanisms…

We propose a robust scheme to prepare three-dimensional entanglement states between a single atom and a Bose-Einstein Condensate (BEC) via stimulated Raman adiabatic passage (STIRAP) techniques. The atomic spontaneous radiation, the cavity…

Quantum Physics · Physics 2015-05-20 Li-Bo Chen , Peng Shi , Chun-Hong Zheng , Yong-Jian Gu

A method to create paired atom laser beams from a metastable helium atom laser via four-wave mixing is demonstrated. Radio frequency outcoupling is used to extract atoms from a Bose Einstein condensate near the center of the condensate and…

Quantum Physics · Physics 2009-11-13 R. G. Dall , L. J. Byron , A. G. Truscott , G. R. Dennis , M. T. Johnsson , J. J. Hope

We demonstrate that spinor Bose-Einstein condensates (BEC) can be operated as an analog simulator of the two-dimensional vibron model. This algebraic model for the description of bending and stretching vibrations of molecules, in the case…

Quantum Physics · Physics 2025-05-27 Ayaka Usui , Artur Niezgoda , Manuel Gessner

We discuss the possibility that dense antihydrogen could provide a path towards a mechanism for a deep space propulsion system. We concentrate at first, as an example, on Bose-Einstein Condensate (BEC) antihydrogen. In a Bose-Einstein…

Quantum Physics · Physics 2015-06-26 Michael Martin Nieto , Michael H. Holzscheiter , Thomas J. Phillips

The transient quantum statistical properties of the atoms and molecules in an atom-molecule BEC system are investigated by obtaining a third-order perturbative solution of the Heisenberg's equations of motion corresponding to the…

Quantum Physics · Physics 2014-07-08 Sandip Kumar Giri , Kishore Thapliyal , Biswajit Sen , Anirban Pathak

An apparatus for producing atomic-gas Bose-Einstein condensates (BECs) of 87-Rb atoms is described. The apparatus produces 87-Rb BECs in a dual-chamber vacuum system that incorporates magnetic transport of trapped atoms from the…

Other Condensed Matter · Physics 2007-05-23 David R. Scherer

We present an optimized strategy for the production of tightly confined Bose-Einstein condensates (BEC) of 87Rb in a crossed dipole trap with direct loading from a magneto-optical trap. The dipole trap is created with light of a…

Quantum Gases · Physics 2011-11-03 Thomas Lauber , Johannes Kueber , Oliver Wille , Gerhard Birkl

Manipulation of the quantum state by the Majorana transition in spinor BEC system has been realized by altering the rotation frequency of the magnetic field's direction. This kind of manipulation method has no limitation on the transition…

Quantum Physics · Physics 2015-06-26 Lin Xia , Xu Xu , Fan Yang , Wei Xiong , Juntao Li , Qianli Ma , Xiaoji Zhou , Hong Guo , Xuzong Chen

We have observed Bose-Einstein condensation (BEC) of trapped atomic hydrogen, and studied it by two-photon spectroscopy of the 1S-2S transition. In these lecture notes we briefly review the history of spin-polarized atomic hydrogen and…

We produce ${^{84}\mathrm{Sr}_2}$ molecules using Bose-enhanced Raman photoassociation. We apply the stimulated Raman adiabatic passage (STIRAP) technique on a Bose-Einstein condensate (BEC) to produce more than $8 \times 10^3$ ultracold…

Quantum Gases · Physics 2017-12-05 Alessio Ciamei , Alex Bayerle , Benjamin Pasquiou , Florian Schreck

Demonstrating that despite loss processes, Bose-Einstein condensates can be formed in steady state is a prerequisite for obtaining a coherent beam of atoms in a continuous-wave atom laser. In this paper we propose a method for loading atoms…

Quantum Physics · Physics 2009-11-06 Satyan Bhongale , Murray Holland

We predict the loss of superfluidity in a Bose-Einstein condensate (BEC) trapped in a combined optical and axially-symmetric harmonic potentials during a resonant collective excitation initiated by a periodic modulation of the atomic…

Soft Condensed Matter · Physics 2009-11-07 Sadhan K. Adhikari

We investigate correlation properties of a one-dimensional interacting Bose gas by loading a magnetically trapped 87-Rb Bose-Einstein condensate into a deep two-dimensional optical lattice. We measure the three-body recombination rate for…

Soft Condensed Matter · Physics 2007-05-23 B. Laburthe Tolra , K. M. O'Hara , J. H. Huckans , W. D. Phillips , S. L. Rolston , J. V. Porto

Atomic superfluids formed using Bose-Einstein condensates (BECs) in a ring trap are currently being investigated in the context of superfluid hydrodynamics, quantum sensing and matter-wave interferometry. The characterization of the…

Quantum Physics · Physics 2024-11-21 Rahul Gupta , Pardeep Kumar , Rina Kanamoto , M. Bhattacharya , Himadri Shekhar Dhar

We study the ground-state behavior of a Bose-Einstein Condensate (BEC) in a Raman-laser-assisted one-dimensional (1D) optical lattice potential forming a multilayer system. We find that, such system can be described by an effective model…

Quantum Gases · Physics 2017-01-10 Qing Sun , Jie Hu , Lin Wen , W. -M. Liu , G. Juzeliunas , An-Chun Ji

The fundamental phenomenon of Bose-Einstein Condensation (BEC) has been observed in different systems of real and quasi-particles. The condensation of real particles is achieved through a major reduction in temperature while for…

Atomic-molecular Bose-Einstein condensates (BECs) offer brand new opportunities to revolutionize quantum gases and probe the variation of fundamental constants with unprecedented sensitivity. The recent realization of spin-orbit coupling…

Quantum Gases · Physics 2015-02-24 Chao-Fei Liu , Gediminas Juzeliunas , Wu-Ming Liu

Nuclear processes can be stimulated by the presence of a macroscopic number of bosons in one of the final states. We describe the conditions necessary to observe the atom-stimulation of a beta decay process. The stimulation may be…

atom-ph · Physics 2009-10-28 J. J. Hope , C. M. Savage
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