Quantum gravitational optics: the induced phase

Testing operational phase concepts in quantum optics

An experimental comparison of several operational phase concepts is presented. In particular, it is shown that statistically motivated evaluation of experimental data may lead to a significant improvement in phase fitting upon the conventional Noh, Fougères and Mandel procedure. The analysis is extended to the asymptotic limit of large intensities, where a strong evidence in favor of multi–dime...

The Future of Gravitational Optics

Received ; accepted PASP Millenium Essay – 2 – ABSTRACT In this speculative, millenial essay, I try to anticipate what sort of novel gravitational optics investigations might be observed, after it becomes possible to map and monitor roughly a trillion sources (of which a billion may be usefully variable) comprehensively throughout electromagnetic and other spectra over the whole sky. Existing t...

Gravitational phase transitions in infrared quantum gravity

The conformal anomaly induced sector of four-dimensional quantum gravity (infrared quantum gravity) —which has been introduced by Antoniadis and Mottola— is here studied on a curved fiducial background. The one-loop effective potential for the effective conformal factor theory is calculated with accuracy, including terms linear in the curvature. It is proven that a curvature induced phase trans...

Testing of quantum phase in matter wave optics

Various phase concepts may be treated as special cases of the maximum likelihood estimation. For example the discrete Fourier estimation that actually coincides with the operational phase of Noh, Fougères and Mandel is obtained for continuous Gaussian signals with phase modulated mean. Since signals in quantum theory are discrete, a prediction different from that given by the Gaussian hypothesi...

Quantum Optics