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- European Organization for Nuclear ResearchCH78 papers
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5 papers · 2 filters
Transfer of optical vortices in coherently prepared media
Hamid Reza Hamedi, Julius Ruseckas, Emmanuel Paspalakis +1
We consider transfer of optical vortices between laser pulses carrying orbital angular momentum (OAM) in a cloud of cold atoms characterized by the configuration of the atom-li…
Efficient Generation of the Triplet Bell State Between Coupled Spins Using Transitionless Quantum Driving and Optimal Control
Dionisis Stefanatos, Emmanuel Paspalakis
We consider a pair of coupled spins with Ising interaction in z-direction and study the problem of generating efficiently the triplet Bell state. We initially analyze the transitio…
Decays of unstable quantum systems
Charis Anastopoulos
This paper is a pedagogical yet critical introduction to the quantum description of unstable systems, mostly at the level of a graduate quantum mechanics course. Quantum decays app…
Time of arrival and localization of relativistic particles
Charis Anastopoulos, Ntina Savvidou
Constructing observables that describe the localization of relativistic particles is an important foundational problem in relativistic quantum field theory (QFT). The description o…
Maximizing entanglement in bosonic Josephson junctions using shortcuts to adiabaticity and optimal control
Dionisis Stefanatos, Emmanuel Paspalakis
In this article we consider a bosonic Josephson junction, a model system composed by two coupled nonlinear quantum oscillators which can be implemented in various physical contexts…