Parasoziale Interaktion : Bibliografie ; Nachträge 10 / 2000

Zur Bibliographie: Aufgenommen sind alle Veröffentlichungen, die im SSCI oder A&HCI bis einschließlich 1991 als Quellen für Zitierungen der Aufsätze Horton/Wohl (1956) und Horton/Strauss (1957) nachgewiesen sind, sowie alle anderen mir vorliegenden Arbeiten, die diese Aufsätze bzw. das Konzept der parasozialen Interaktion erwähnen. Aufgrund dieses Verfahrens erscheinen einige Arbeiten, die Horton und Wohls Aufsatz lediglich am Rande erwähnen oder auch gar nicht der Kommunikationsforschung angehören. Leider werden deutschsprachige Zeitschriften bibliographisch kaum ausgewertet, so daß man für die Erfassung der deutschen Rezeption auf Querverweise und Zufallsfunde angewiesen ist

Sub-Poissonian Phonon Lasing in Three-Mode Optomechanics

We propose to use the resonant enhancement of the parametric instability in an optomechanical system of two optical modes coupled to a mechanical oscillator to prepare mechanical states with sub-Poissonian phonon statistics. Strong single photon coupling is not required. The requirements regarding sideband resolution, circulating cavity power and environmental temperature are in reach with state of the art parameters of optomechanical crystals. Phonon antibunching can be verfied in a Hanburry-Brown-Twiss measurement on the output field of the optomechanical cavity.Comment: 6 pages, 4 figure

Synchronization of Active Atomic Clocks via Quantum and Classical Channels

Superradiant lasers based on atomic ensembles exhibiting ultra-narrow optical transitions can emit light of unprecedented spectral purity and may serve as active atomic clocks. We consider two frequency-detuned active atomic clocks, which are coupled in a cascaded setup, i.e. as master & slave lasers, and study the synchronization of the slave to the master clock. In a setup where both atomic ensembles are coupled to a common cavity mode such synchronization phenomena have been predicted by Xu et al. [Phys. Rev. Lett. 113, 154101 (2014)] and experimentally observed by Weiner et al. [arXiv:1503.06464 (2015)]. Here we demonstrate that synchronization still occurs in cascaded setups but exhibits distinctly different phase diagrams. We study the characteristics of synchronization in comparison to the case of coupling through a common cavity. We also consider synchronization through a classical channel where light of the master laser is measured phase sensitively and the slave laser is injection locked by feedback and compare to the results achievable by coupling through quantum channels.Comment: 13 pages, 12 figure

Measurement-Induced Long-Distance Entanglement of Superconducting Qubits using Optomechanical Transducers

Although superconducting systems provide a promising platform for quantum computing, their networking poses a challenge as they cannot be interfaced to light---the medium used to send quantum signals through channels at room temperature. We show that mechanical oscillators can mediated such coupling and light can be used to measure the joint state of two distant qubits. The measurement provides information on the total spin of the two qubits such that entangled qubit states can be postselected. Entanglement generation is possible without ground-state cooling of the mechanical oscillators for systems with optomechanical cooperativity moderately larger than unity; in addition, our setup tolerates a substantial transmission loss. The approach is scalable to generation of multipartite entanglement and represents a crucial step towards quantum networks with superconducting circuits.Comment: Updated figures, close to published versio