461 citations
- Centre National de la Recherche ScientifiqueFR45 papers
- Sorbonne UniversitéFR25 papers
- Université Paris-SudFR19 papers
- Institut de Mathématiques de Jussieu-Paris Rive GaucheFR17 papers
- CEA Paris-SaclayFR13 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR13 papers
- Laboratoire de Physique ThéoriqueFR11 papers
- Délégation Paris 7FR9 papers
- Laboratoire d'Informatique Algorithmique: Fondements et ApplicationsFR6 papers
- Laboratoire de physique des SolidesFR5 papers
- Laboratoire de Probabilités et Modèles AléatoiresFR5 papers
- Observatoire de ParisFR5 papers
5 papers · 2 filters
Semi-groups and time operators for quantum unstable systems
Maurice Courbage
We use spectral projections of time operator in the Liouville space for simple quantum scattering systems in order to define a space of unstable particle states evolving under a co…
A product formula and combinatorial field theory
A. Horzela, P. Blasiak, G. H. E. Duchamp +2
We treat the problem of normally ordering expressions involving the standard boson operators a, a* where [a,a*]=1. We show that a simple product formula for formal power series - e…
Partition functions and graphs: A combinatorial approach
Allan I. Solomon, Pawel Blasiak, Gerard Duchamp +2
Although symmetry methods and analysis are a necessary ingredient in every physicist's toolkit, rather less use has been made of combinatorial methods. One exception is in the real…
Generalized Performance of Concatenated Quantum Codes -- A Dynamical Systems Approach
Jesse Fern, Julia Kempe, Slobodan Simic +1
We apply a dynamical systems approach to concatenation of quantum error correcting codes, extending and generalizing the results of Rahn et al. [1] to both diagonal and nondiagonal…
Coins Make Quantum Walks Faster
Andris Ambainis, Julia Kempe, Alexander Rivosh
We show how to search N items arranged on a grid in time , using a discrete time quantum walk. This result for the first time exhibits a…