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Few-body interactions in frozen Rydberg gases
- Source :
- The European Physical Journal Special Topics. 225:2935-2956
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- The strong dipole-dipole coupling and the Stark tunability make Forster resonances an attractive tool for the implementation of quantum gates. In this direction a generalization to a N-body process would be a powerful instrument to implement multi-qubit gate and it will also path the way to the understanding of many-body physics. In this review, we give a general introduction on Forster resonances, also known as two-body FRET, giving an overview of the different application in quantum engineering and quantum simulation. Then we will describe an analogous process, the quasi-forbidden FRET, which is related to the Stark mixing due to the presence of an external electric field. We will then focus on its use in a peculiar four-body FRET. The second part of this review is focused on our study of few-body interactions in a cold gas of Cs Rydberg atoms. After a detailed description of a series of quasi-forbidden resonances detected in the proximity of an allowed two-body FRET we will show our most promising result: the observation of a three-body FRET. This process corresponds to a generalization of the usual two-body FRET, where a third atom serves as a relay for the energy transport. This relay also compensates for the energy mismatch which prevents a direct two-body FRET between the donor and the acceptor, but on the other side allowed a three-body process; for this reason, the three-body FRET observed is a “Borromean” process. It can be generalized for any quantum system displaying two-body FRET from quasi-degenerate levels. We also predict N-body FRET, based on the same interaction scheme. Three-body FRET thus promises important applications in the formation of macro-trimers, implementation of few-body quantum gates, few-body entanglement or heralded entanglement.
- Subjects :
- Physics
Physics::Biological Physics
Quantitative Biology::Biomolecules
General Physics and Astronomy
Quantum simulator
Quantum entanglement
01 natural sciences
010305 fluids & plasmas
Quantum technology
symbols.namesake
Förster resonance energy transfer
Quantum gate
Quantum mechanics
0103 physical sciences
Rydberg atom
Quantum system
Rydberg formula
symbols
General Materials Science
Physical and Theoretical Chemistry
Atomic physics
010306 general physics
Subjects
Details
- ISSN :
- 19516401 and 19516355
- Volume :
- 225
- Database :
- OpenAIRE
- Journal :
- The European Physical Journal Special Topics
- Accession number :
- edsair.doi...........19f9731e67717813372fd72a2908f39a