Artikel-Schlagworte: „Quantenphysik“
Crystal Power: Piezo Coupling to the Quantum Zero Point
Laurence J. November
We consider electro-optical constructions in which the Casimir force is modulated in opposition to piezo-crystal elasticity, as in a stack of alternating tunably conductive and piezo layers. Adjacent tunably conducting layers tuned to conduct, attract by the Casimir force compressing the intermediate piezo, but when subsequently detuned to insulate, sandwiched piezo layers expand elastically to restore their original dimension. In each cycle some electrical energy is made available from the quantum zero point (zp). We estimate that the maximum power that could be derived at semiconductor THz modulation rates is megawatts/cm3. Similarly a permittivity wave generated by a THz acoustic wave in a single crystal by the acousto-optic effect produces multiple coherent Casimir wave mode overtones and a bulk mode. We model the Casimir effect in a sinusoidally graded medium finding it to be very enhanced over what is found in a multilayer stack for the equivalent permittivity contrast, and more slowly decreasing with scale, going as the wavelength 1/{\lambda}2. Acoustic waves give comparable theoretical power levels of MW/cm3 below normal crystal damage thresholds. Piezo thermodynamic relations give conditions for effective coupling of the Casimir bulk mode to an external electrical load. Casimir wave modes may exchange energy with the main acoustic wave too, which may partially account for THz attenuation seen in materials. We outline feasibility issues for building a practical crystal power generator.
Observation of the Dynamical Casimir Effect in a Superconducting Circuit
C.M. Wilson, G. Johansson, A. Pourkabirian, J.R. Johansson, T. Duty, F. Nori, P. Delsing
One of the most surprising predictions of modern quantum theory is that the vacuum of space is not empty. In fact, quantum theory predicts that it teems with virtual particles flitting in and out of existence. While initially a curiosity, it was quickly realized that these vacuum fluctuations had measurable consequences, for instance producing the Lamb shift of atomic spectra and modifying the magnetic moment for the electron. This type of renormalization due to vacuum fluctuations is now central to our understanding of nature. However, these effects provide indirect evidence for the existence of vacuum fluctuations. From early on, it was discussed if it might instead be possible to more directly observe the virtual particles that compose the quantum vacuum. 40 years ago, Moore suggested that a mirror undergoing relativistic motion could convert virtual photons into directly observable real photons. This effect was later named the dynamical Casimir effect (DCE). Using a superconducting circuit, we have observed the DCE for the first time. The circuit consists of a coplanar transmission line with an electrical length that can be changed at a few percent of the speed of light. The length is changed by modulating the inductance of a superconducting quantum interference device (SQUID) at high frequencies (~11 GHz). In addition to observing the creation of real photons, we observe two-mode squeezing of the emitted radiation, which is a signature of the quantum character of the generation process.
Fundamentale Grundlagen der Raumenergie und Konstruktionsprinzipien für Raumenergie-Motoren
Von Prof. Dr. Claus Turtur
Konzeption der elektrischen Felder als Verkürzung der Wellenlänge der Nullpunktsoszillationen des Quantenvakuums
Der Mechanismus der Wandlung von Raumenergie ist verstanden. Auf dessen Basis lassen sich nun Raumenergie-Konverter systematisch konstruieren. Ein entsprechendes Berechnungsverfahren wurde entwickelt und wird hier vorgestellt.
Dabei werden zunächst die Grundlagen der Wandlung von Raumenergie erläutert und anhand einiger Beispiele aus unserem Alltag erläutert. Diese reichen bis hinein in die Grundlagen der Stabilität der Materie. Darauf basierend wird das Berechnungsverfahren der „Dynamischen Finite-Elemente-Methode“ (DFEM) zur Auslegung von Raumenergie-Konvertern eingeführt. Um das Verfahren zu veranschaulichen wird schließlich ein konkretes Rechenbeispiel an einem gedachten Raumenergie-Konverter explizit vorgeführt. Zu guter Letzt folgen einige kurze Gedanken zu den philosophischen Hintergründen, die die technische Entwicklung der vorliegenden Arbeit ermöglicht haben.
