Fredkin’s Billiard Ball Model (BBM) is considered one of the fundamental models of collision-based computing, and it is essentially based on elastic collisions of mobile billiard balls. Moreover, fixed mirrors or reflectors are brought into the model to deflect balls to complete the computation. However, the use of fixed mirrors is “physically unrealistic” and makes the BBM not perfectly moment...

A neutron-spin experimental test of the quantum Zeno effect (QZE) is discussed from a practical point of view, when the nonideal efficiency of the magnetic mirrors, used for filtering the spin state, is taken into account. In the idealized case the number N of (ideal) mirrors can be indefinitely increased, yielding an increasingly better QZE. By contrast, in a practical situation with imperfect...

Autonomous navigation, site modelling and surveillance applications all benefit from using panoramic 360◦ images. Catadioptric omnidirectional sensors, consisting of a camera and a mirror, can track objects even while the robot is making sudden and significant turns. There has been much debate and theoretical analysis recently concerning the relative merits of several possible shapes of mirrors...

2014 The development of multilayered mirrors for the soft X-ray range allows us to bulld diagnostics capable of imaging dense plasmas at radiation energies less than or equal to 100 eV. Multilayered mirrors have particular applications in laser fusion research. In this area, such instrumentation allow us to study the overcritical zone of laser created plasmas. In this zone where the electromagn...

A considerable issue in designing catadioptric imaging systems is what shape the component mirrors should be formed. In this paper, we propose a new algorithm for a catadioptric imaging system that satisfies the desired projection using a free-form mirror. A free-form mirror expressed as an assembly of gradients is a flexible surface representation that can form various shapes including non-smo...

We analyze a scheme to entangle the movable mirrors of two spatially separated nanoresonators via a broadband squeezed light. We show that it is possible to transfer the Einstein–Podolsky–Rosen-type continuous-variable entanglement from the squeezed light to the mechanical motion of the movable mirrors. An optimal entanglement transfer is achieved when the nanoresonators are tuned at resonance ...

A considerable issue in designing catadioptric imaging systems is what shape the component mirrors should be formed. In this paper, we propose a new algorithm for a catadioptric imaging system that satisfies the desired projection using a free-form mirror. A free-form mirror expressed as an assembly of gradients is a flexible surface representation that can form various shapes including non-smo...

All optical and laser diagnostic systems in ITER will use metallic mirrors as plasma viewing elements. In the harsh environment of ITER, the performance of mirrors will decrease mainly because of erosion of their surfaces and deposition of impurities. The deterioration of optical properties of diagnostic mirrors will directly affect the entire performance of the respective ITER diagnostics, pos...

Precision mirrors are required for effective solar energy collectors. Manufacturing such mirrors and making them robust to disturbances such as thermal gradients is expensive. In this paper, the use of parallel binary actuation to control the shape of mirrors for solar concentrators is explored. The approach embeds binary actuators in a compliant mirror substructure. Actuators are deployed in a...

A framework is developed for the design and analysis of single-viewpoint catadioptric cameras that use two or more mirrors. The use of multiple mirrors permits folding of the optics which leads to more compact camera designs than ones that use a single mirror. A dictionary of camera designs that use two conic mirrors is presented. We show that any folded system that uses conic mirrors has a geo...