Chaotic walking of a cold atom in an ideal cavity

2003 ◽  
pp. 345-346
Author(s):  
S. V. Prants ◽  
L. E. Kon’kov
Keyword(s):  
Cold Atom ◽  
Chaotic Walking

scholarly journals Improving cold-atom sensors with quantum entanglement: Prospects and challenges

2021 ◽  
Vol 118 (14) ◽  
pp. 140501
Author(s):  
Stuart S. Szigeti ◽  
Onur Hosten ◽  
Simon A. Haine
Keyword(s):  
Quantum Entanglement ◽  
Cold Atom

Distortion of Rabi oscillations in a compact cold-atom clock

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Xinchuan Ouyang ◽  
Bowen Yang ◽  
Qingqing Hu ◽  
Hanghang Qi ◽  
Ling Xiao ◽  
...  
Keyword(s):  
Cold Atom ◽  
Rabi Oscillations

scholarly journals Quantum Zeno effects across a parity-time symmetry breaking transition in atomic momentum space

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Tao Chen ◽  
Wei Gou ◽  
Dizhou Xie ◽  
Teng Xiao ◽  
Wei Yi ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
State Of The Art ◽  
Cold Atom ◽  
Pt Symmetry ◽  
Level System ◽  
Flexible Control ◽  
Time Symmetry ◽  
Symmetry Phase ◽  
Lattice Quantum ◽  
Atomic Momentum

AbstractWe experimentally study quantum Zeno effects in a parity-time (PT) symmetric cold atom gas periodically coupled to a reservoir. Based on the state-of-the-art control of inter-site couplings of atoms in a momentum lattice, we implement a synthetic two-level system with passive PT symmetry over two lattice sites, where an effective dissipation is introduced through repeated couplings to the rest of the lattice. Quantum Zeno (anti-Zeno) effects manifest in our experiment as the overall dissipation of the two-level system becoming suppressed (enhanced) with increasing coupling intensity or frequency. We demonstrate that quantum Zeno regimes exist in the broken PT symmetry phase, and are bounded by exceptional points separating the PT symmetric and PT broken phases, as well as by a discrete set of critical coupling frequencies. Our experiment establishes the connection between PT-symmetry-breaking transitions and quantum Zeno effects, and is extendable to higher dimensions or to interacting regimes, thanks to the flexible control with atoms in a momentum lattice.

Cold atom interferometers and their applications in precision measurements

2009 ◽  
Vol 4 (2) ◽  
pp. 179-189 ◽  
Author(s):  
Jin Wang ◽  
Lin Zhou ◽  
Run-bing Li ◽  
Min Liu ◽  
Ming-sheng Zhan
Keyword(s):  
Cold Atom ◽  
Precision Measurements ◽  
Atom Interferometers

Cold-Atom Frustration

Science ◽  
2011 ◽  
Vol 333 (6045) ◽  
pp. 918-918
Keyword(s):  
Cold Atom

Demonstration of a Sagnac-Type Cold Atom Interferometer with Stimulated Raman Transitions

2007 ◽  
Vol 24 (1) ◽  
pp. 27-30 ◽  
Author(s):  
Wang Ping ◽  
Li Run-Bing ◽  
Yan Hui ◽  
Wang Jin ◽  
Zhan Ming-Sheng
Keyword(s):  
Cold Atom ◽  
Atom Interferometer ◽  
Raman Transitions ◽  
Stimulated Raman

Cold atom interferometry for inertial sensing in the field

2020 ◽  
Vol 9 (5) ◽  
pp. 221-225
Author(s):  
Ravi Kumar ◽  
Ana Rakonjac
Keyword(s):  
High Precision ◽  
Cold Atoms ◽  
Cold Atom ◽  
Atom Interferometry ◽  
Precision Measurements ◽  
Inertial Sensing ◽  
Fundamental Physics ◽  
Recent Developments ◽  
Resource Exploration ◽  
Atom Interferometers

AbstractAtom interferometry is one of the most promising technologies for high precision measurements. It has the potential to revolutionise many different sectors, such as navigation and positioning, resource exploration, geophysical studies, and fundamental physics. After decades of research in the field of cold atoms, the technology has reached a stage where commercialisation of cold atom interferometers has become possible. This article describes recent developments, challenges, and prospects for quantum sensors for inertial sensing based on cold atom interferometry techniques.

One-year long common view measurements with continuous gravimeters

2021 ◽  
Author(s):  
Franck Pereira Dos Santos ◽  
Pierre Vermeulen ◽  
Sylvain Bonvalot ◽  
Germinal Gabalda ◽  
Nicolas Le Moigne ◽  
...  
Keyword(s):  
Geodetic Network ◽  
Cold Atom ◽  
Superconducting Gravimeter ◽  
Common View ◽  
Long Term Stability ◽  
Earth Gravity ◽  
Measurement Session ◽  
One Year ◽  
Metrological Evaluation

<p>Since a few years, several laboratories, institutes or organizations through the world have acquired marketed quantum absolute gravimeters AQG developed by Muquans. Among their potentialities, these new generations of instruments are expected to complement the existing capabilities of long term monitoring of the Earth gravity field. A metrological evaluation of their performances for long-term measurements is thus a first step.</p><p>The LNE-SYRTE gravimetry laboratory in the suburb of Paris, has been designed to accommodate other gravimeters for metrological comparisons, tests and calibrations. Instruments of different classes operate in this well characterized laboratory: a laboratory-based absolute cold atom gravimeter (CAG) and a relative superconducting gravimeter iGrav. Both instruments allow for continuous measurements, Accuracy is guaranteed by the CAG and long-term stability by the iGrav.</p><p>We there have performed a more than one-year long measurement session with the initial version of the marketed quantum gravimeter AQG (AQG-A01).</p><p>An improved version of this AQG (AQG-B01) designed for outdoor measurement and recently acquired by RESIF (the French Seismologic and Geodetic Network) has been also implemented to close this session with a last month of simultaneous data recording involving all the instruments. Finally, we also performed supplementary accuracy tests, in particular to evaluate the Coriolis bias of the two AQG commercial sensors.</p><p>The talk will briefly present the different instruments to rapidly focus on the performances of the AQGs and results of the comparisons.</p>

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