https://biblio.ugent.be/publication/685594/file/1130605.pdf

Review of Particle Physics

Quantum cryptography could well be the first application of quantum mechanics at the individual quanta level. The very fast progress in both theory and experiments over the recent years are reviewed, with emphasis on open questions and technological issues.

Quantum Cryptography

Modified Gravity and Cosmology

The status of experimental tests of general relativity and of theoretical frameworks for analyzing them is reviewed and updated. Einstein’s equivalence principle (EEP) is well supported by experiments such as the Eotvos experiment, tests of local Lorentz invariance and clock experiments. Ongoing tests of EEP and of the inverse square law are searching for new interactions arising from unification or quantum gravity. Tests of general relativity at the post-Newtonian level have reached high precision, including the light deflection, the Shapiro time delay, the perihelion advance of Mercury, the Nordtvedt effect in lunar motion, and frame-dragging. Gravitational wave damping has been detected in an amount that agrees with general relativity to better than half a percent using the Hulse-Taylor binary pulsar, and a growing family of other binary pulsar systems is yielding new tests, especially of strong-field effects. Current and future tests of relativity will center on strong gravity and gravitational waves.

/pdf/the-confrontation-between-general-relativity-and-experiment-5dqdube5p9.pdf

The Confrontation Between General Relativity and Experiment

Recent interest in aspects common to quantum information and condensed matter has prompted a flurry of activity at the border of these disciplines that were far distant until a few years ago. Numerous interesting questions have been addressed so far. Here an important part of this field, the properties of the entanglement in many-body systems, are reviewed. The zero and finite temperature properties of entanglement in interacting spin, fermion, and boson model systems are discussed. Both bipartite and multipartite entanglement will be considered. In equilibrium entanglement is shown tightly connected to the characteristics of the phase diagram. The behavior of entanglement can be related, via certain witnesses, to thermodynamic quantities thus offering interesting possibilities for an experimental test. Out of equilibrium entangled states are generated and manipulated by means of many-body Hamiltonians.

/pdf/entanglement-in-many-body-systems-sqpatuxt14.pdf

Entanglement in many-body systems

The vacuum stress between closely spaced conducting surfaces, due to the modification of the zero-point fluctuations of the electromagnetic field, has been conclusively demonstrated. The measurement employed an electromechanical system based on a torsion pendulum. Agreement with theory at the level of 5% is obtained.

Demonstration of the Casimir Force in the 0.6 to 6 μ m Range

CP Violation Without Strangeness

A working free-space quantum key distribution system has been developed and tested over an outdoor optical path of {approximately}1 km at Los Alamos National Laboratory under nighttime conditions. Results show that free-space quantum key distribution can provide secure real-time key distribution between parties who have a need to communicate secretly. Finally, we examine the feasibility of surface to satellite quantum key distribution. {copyright} {ital 1998} {ital The American Physical Society}

https://arxiv.org/pdf/quant-ph/9805071.pdf

Practical Free-Space Quantum Key Distribution over 1 km

A thermal Casimir force—an attraction between two metal surfaces caused by thermal, rather than quantum, fluctuations in the electromagnetic field—has now been identified experimentally between a flat and a spherical gold plate.

Observation of the thermal Casimir force

Ultra-Cold Neutrons is the complete, self-contained introduction and review of the field of ultra-cold neutron (UCN) physics. It is suitable as an introduction to the field for research students, as a useful compendium of results and techniques for researchers and is of general interest to non-specialists in other areas of physics such as neutron, atomic and fundamental physics and neutron scattering.

https://iopscience.iop.org/article/10.1088/0034-4885/42/3/002/pdf

Steve K. Lamoreaux

Papers

Demonstration of the Casimir Force in the 0.6 to 6 μ m Range

CP Violation Without Strangeness

Practical Free-Space Quantum Key Distribution over 1 km

Observation of the thermal Casimir force

Ultra-Cold Neutrons