Efficient Entanglement Transfer Between Light and Cold-atom Quantum Memories

2021 ◽  
Author(s):  
Felix Hoffet ◽  
Mingtao Cao ◽  
Shuwei Qiu ◽  
Alexandra S. Sheremet ◽  
Hadriel Mamann ◽  
...  
Keyword(s):  
Cold Atom ◽  
Entanglement Transfer

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.

scholarly journals Purification and redistribution of entanglement via single local filtering

2014 ◽  
Vol 12 (01) ◽  
pp. 1450004 ◽  
Author(s):  
K. O. Yashodamma ◽  
P. J. Geetha ◽  
Sudha
Keyword(s):  
Quantum State ◽  
The State ◽  
Quantum States ◽  
Local Action ◽  
Entanglement Transfer ◽  
Local Filtering

The effect of filtering operation with respect to purification and concentration of entanglement in quantum states are discussed in this paper. It is shown, through examples, that the local action of the filtering operator on a part of the composite quantum state allows for purification of the remaining part of the state. The redistribution of entanglement in the subsystems of a noise affected state is shown to be due to the action of local filtering on the non-decohering part of the system. The varying effects of the filtering parameter, on the entanglement transfer between the subsystems, depending on the choice of the initial quantum state is illustrated.

Possibility of entanglement transfer in a uniform electric field

2012 ◽  
Vol 85 (2) ◽  
Author(s):  
Hui-Min Lin ◽  
Ru-Fen Liu ◽  
Chia-Chu Chen
Keyword(s):  
Electric Field ◽  
Uniform Electric Field ◽  
Entanglement Transfer

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.

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