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- European Organization for Nuclear ResearchCH78 papers
- Foundation for Research and Technology HellasGR60 papers
- Aristotle University of ThessalonikiGR51 papers
- National Technical University of AthensGR47 papers
- National Centre of Scientific Research "Demokritos"GR45 papers
- Centre National de la Recherche ScientifiqueFR43 papers
- Computer Technology Institute and Press “DIOPHANTUS”GR41 papers
- National Observatory of AthensGR40 papers
- Institute for Nuclear ResearchRU32 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR31 papers
- Universidad de ZaragozaES31 papers
- Technische Universität DarmstadtDE27 papers
8 papers · 2 filters
Minimum time generation of a uniform superposition in a qubit with only transverse field control
Vasileios Evangelakos, Emmanuel Paspalakis, Dionisis Stefanatos
We consider a two-level system with a fixed energy spacing (detuning) between the two levels and a single transverse control field which can take values between zero and a maximum…
Optimal STIRAP shortcuts using the spin to spring mapping
Vasileios Evangelakos, Emmanuel Paspalakis, Dionisis Stefanatos
We derive shortcuts to adiabaticity maximizing population transfer in a three-level quantum system, using the spin to spring mapping to formulate the corresponding optimal cont…
An exactly solvable relativistic quantum Otto engine
Nikos K. Kollas, Dimitris Moustos
We revisit the mathematics of exactly solvable Unruh-DeWitt detector models, interacting with massless scalar fields under instantaneous interactions, to construct a relativistic q…
Quantum probabilities for the causal ordering of events
Charis Anastopoulos, Maria_Electra Plakitsi
We develop a new formalism for constructing probabilities associated to the causal ordering of events in quantum theory, where by an event we mean the emergence of a measurement re…
A Review on Quantum Approximate Optimization Algorithm and its Variants
Kostas Blekos, Dean Brand, Andrea Ceschini +4
The Quantum Approximate Optimization Algorithm (QAOA) is a highly promising variational quantum algorithm that aims to solve combinatorial optimization problems that are classicall…
Causality and signalling in non-compact detector-field interactions
José de Ramón, Maria Papageorgiou, Eduardo Martín-Martínez
In this paper we analyze the problem of "apparent" superluminal signalling and retrocausation that can appear for particle detector models when considering non-compactly supported…