Space-Time Quantum Imaging

Space-Time Quantum Imaging

We report on an experimental and theoretical investigation of quantum imaging where the images are stored in both space and time. Ghost images of remote objects are produced with either one or two beams of chaotic laser light generated by a rotating ground glass and two sensors measuring the reference field and bucket field at different space-time points. We further observe that the ghost image...

The Quantum Space-Time

Rapporteur talk at the 2011 Solvay Conference

Fractal Quantum Space -Time

In this paper we calculated the spectral dimension of loop quantum gravity (LQG) using the scaling property of the area operator spectrum on spin-network states and using the scaling property of the volume and length operators on Gaussian states. We obtained that the spectral dimension of the spatial section runs from 1.5 to 3, and under particular assumptions from 2 to 3 across a 1.5 phase whe...

Quantum Space-Time and Tetrads1

The description of space-time in a quantum theoretical framework must be considered as a fundamental problem in physics. Most attempts start with an already given classical spacetime then the quantization is done. In contrast to this the central assumption in this paper is not to start with space-time, but to derive it from some more abstract presuppositions like this is done in von Weizsäcker’...

Space-Time Approach to Quantum Chaos