Results 21 to 30 of about 415,608 (282)
Dynamical symmetries and crossovers in a three-spin system with collective dissipation
New Journal of Physics, 2015 We consider the non-equilibrium dynamics of a simple system consisting of interacting spin-1/2 particles subjected to a collective damping. The model is close to situations that can be engineered in hybrid electro/opto-mechanical settings.
S Pigeon +5 more
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Robust quantum state engineering through coherent localization in biased-coin quantum walks
EPJ Quantum Technology, 2018 We address the performance of a coin-biased quantum walk as a generator for non-classical position states of the walker. We exploit a phenomenon of coherent localization in the position space - resulting from the choice of small values of the coin ...
Helena Majury +4 more
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Optically controlled resonance energy transfer:Mechanism and configuration for all-optical switching [PDF]
, 2008 In a molecular system of energy donors and acceptors, resonance energy transfer is the primary mechanism by means of which electronic energy is redistributed between molecules, following the excitation of a donor. Given a suitable geometric configuration
Andrews D. L. +3 more
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Energetic cost of quantum control protocols
New Journal of Physics, 2019 We quantitatively assess the energetic cost of several well-known control protocols that achieve a finite time adiabatic dynamics, namely counterdiabatic and local counterdiabatic driving, optimal control, and inverse engineering.
Obinna Abah +5 more
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Non-Gaussian distribution of collective operators in quantum spin chains
New Journal of Physics, 2016 We numerically analyse the behavior of the full distribution of collective observables in quantum spin chains. While most of previous studies of quantum critical phenomena are limited to the first moments, here we demonstrate how quantum fluctuations at ...
M Moreno-Cardoner +2 more
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Observation of a shape resonance of the positronium negative ion
Nature Communications, 2016 The Positronium negative ion is formed by two electrons bound to a positron, and experimental investigations of its states and energy levels are difficult due to its short lifetime.
Koji Michishio +8 more
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New Journal of Physics, 2021 We deploy a combination of reinforcement learning-based approaches and more traditional optimization techniques to identify optimal protocols for population transfer in a multi-level system.
Jonathon Brown +7 more
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Scanning electron microscopy of cold gases
, 2015 Ultracold quantum gases offer unique possibilities to study interacting many-body quantum systems. Probing and manipulating such systems with ever increasing degree of control requires novel experimental techniques. Scanning electron microscopy is a high
Ott, Herwig, Santra, Bodhaditya
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Magneto-optical trapping of diatomic molecules
, 2012 The development of the magneto-optical trap revolutionized the fields of atomic and quantum physics by providing a simple method for the rapid production of ultracold, trapped atoms.
Collopy, Alejandra L. +5 more
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