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Theory of dynamical superradiance in organic materials
Lukas Freter, Piper Fowler-Wright, Javier Cuerda +3
We develop the theory of dynamical superradiance -- the collective exchange of energy between an ensemble of initially excited emitters and a single-mode cavity -- for organic mate…
Localization and diffusion in Ising-type quantum networks
P. Torma, I. Jex, W. P. Schleich
We investigate the effect of phase randomness in Ising-type quantum networks. These networks model a large class of physical systems. They describe micro- and nanostructures or arr…
Control of dynamical localization by an additional quantum degree of freedom
K. Riedel, P. Torma, V. Savichev +1
We identify a new parameter that controls the localization length in a driven quantum system. This parameter results from an additional quantum degree of freedom. The center-of-mas…
Transitions in quantum networks
Paivi Torma
We consider transitions in quantum networks analogous to those in the two-dimensional Ising model. We show that for a network of active components the transition is between the qua…
Entanglement engineering of one-photon wavepackets using a single-atom source
K. M. Gheri, C. Saavedra, P. Toermae +2
We propose a cavity-QED scheme for the controlled generation of sequences of entangled single-photon wavepackets. A photon is created inside a cavity via an active medium, such as…
Dynamical Localization in the Paul Trap
M. El Ghafar, P. Torma, V. Savichev +3
We show that quantum localization occurs in the center-of-mass motion of an ion stored in a Paul trap and interacting with a standing laser field. The present experimental state of…
Approximate Quantum Fourier Transform and Decoherence
Adriano Barenco, Artur Ekert, Kalle-Antti Suominen +1
We discuss the advantages of using the approximate quantum Fourier transform (AQFT) in algorithms which involve periodicity estimations. We analyse quantum networks performing AQFT…