In this article I explore the possibility of being able to hear the sound of a quantum superposition of two sounds. What would it mean and is it feasible to explore performing an experiment that would allow us to test this notion?
Hearing the Quantum DifferenceAt very low volume, a quantum optical microphone performs better than a classical device, and humans can hear the difference.By Michael Schirber Q uantum devices are often touted as performing better than classical ones, but the impact can seem far from our everyday lives.Researchers have now demonstrated a quantum optical microphone that listeners say produces a clearer sound than a classical counterpart [1].The microphone was tested under specific conditions (low volume and high noise), outside of which the quantum advantage would not be noticeable.Despite this limitation, the new quantum techniques could prove useful elsewhere: they could eventually be used to improve imaging of biological samples.Many high-precision measurements, such as gravitational-wave detection, rely on interferometers that measure interference effects, such as fringes, that arise when photons are sent through two possible paths.Using pairs of
The MAIUS-1 experiment is a pathfinder quantum optics experiment about to fly on a VSB-30 sounding rocket in November 2015. The scientific objective of the mission is to demonstrate the feasibility of creating a Bose-Einstein Condensate and performing atom interferometry aboard a sounding rocket with Rubidium 87atoms. This paper will summarize the thermal and mechanical design of the payload and its (sub)systems. Moreover the qualification procedures and the results of the qualification test will be presented.
Bose-Einstein-Condensates (BECs) can be used as a very sensitive tool for experiments on fundamental questions in physics like testing the equivalence principle using matter wave interferometry. Since the sensitivity of these experiments in ground-based environments is limited by the available free fall time, the QUANTUS project started to perform BEC interferometry experiments in micro-gravity. After successful campaigns in the drop tower, the next step is a space-borne experiment. The MAIUS-mission will be an atom-optical experiment that will show the feasibility of experiments with ultra-cold quantum gases in microgravity in a sounding rocket. The experiment will create a BEC of 10(5) (87)Rb-atoms in less than 5 s and will demonstrate application of basic atom interferometer techniques over a flight time of 6 min. The hardware is specifically designed to match the requirements of a sounding rocket mission. Special attention is thereby spent on the appropriate magnetic shielding from varying magnetic fields during the rocket flight, since the experiment procedures are very sensitive to external magnetic fields. A three-layer magnetic shielding provides a high shielding effectiveness factor of at least 1000 for an undisturbed operation of the experiment. The design of this magnetic shielding, the magnetic properties, simulations, and tests of its suitability for a sounding rocket flight are presented in this article.