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Probing Correlated Quantum Many-Body Systems at the Single-Particle Level (Repost)

Posted By: AvaxGenius
Date: 3 Aug 2023 06:27:54
Probing Correlated Quantum Many-Body Systems at the Single-Particle Level (Repost)

Probing Correlated Quantum Many-Body Systems at the Single-Particle Level by Manuel Endres
English | PDF | 2014 | 176 Pages | ISBN : 3319057529 | 4.8 MB

How much knowledge can we gain about a physical system and to what degree can we control it? In quantum optical systems, such as ion traps or neutral atoms in cavities, single particles and their correlations can now be probed in a way that is fundamentally limited only by the laws of quantum mechanics. In contrast, quantum many-body systems pose entirely new challenges due to the enormous number of microscopic parameters and their small length- and short time-scales.
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Renormalization Group and Effective Field Theory Approaches to Many-Body Systems

Posted By: AvaxGenius
Date: 30 Jul 2023 14:56:53
Renormalization Group and Effective Field Theory Approaches to Many-Body Systems

Renormalization Group and Effective Field Theory Approaches to Many-Body Systems by Achim Schwenk, Janos Polonyi
English | PDF | 2012 | 356 Pages | ISBN : 364227319X | 9.4 MB

There have been many recent and important developments based on effective field theory and the renormalization group in atomic, condensed matter, nuclear and high-energy physics. These powerful and versatile methods provide novel approaches to study complex and strongly interacting many-body systems in a controlled manner.
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Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates

Posted By: AvaxGenius
Date: 20 Jun 2022 12:17:03
Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates

Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates by Christan Groß
English | PDF | 2012 | 123 Pages | ISBN : 3642256368 | 4.1 MB

Interferometry, the most precise measurement technique known today, exploits the wave-like nature of the atoms or photons in the interferometer. As expected from the laws of quantum mechanics, the granular, particle-like features of the individually independent atoms or photons are responsible for the precision limit, the shot noise limit. However this “classical” bound is not fundamental and it is the aim of quantum metrology to overcome it by employing entanglement among the particles. This work reports on the realization of spin-squeezed states suitable for atom interferometry. Spin squeezing was generated on the basis of motional and spin degrees of freedom, whereby the latter allowed the implementation of a full interferometer with quantum-enhanced precision.
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