Lab Report Of Osmosis And Diffusion Experiment

Create a quantum drum

With an appearance similar to a tambourine without jingles tambourine, drum developed by researchers at the National Institute of Standards and Technology Colorado (NIST), in the U.S., is a membrane radius of 100 nm aluminum thick, which acts both as a skin vibrating drum and the part of a capacitor. The device, whose details are published in the journal Nature, holds the key to open a new field in quantum physics.

drum circuit superconductor electromechanical coupling shows a strong record, a key feature to observe and controlling quantum states lasting mechanical movements. This drum is lightweight and flexible enough to vibrate freely even be larger and heavier than typical nanowires used in similar experiments.

"The drum strikes a perfect balance because, although it remains at the micro, you can attach strongly," said John Teufel, author of the study. Experiments conducted by scientists created strong interactions between light microwave, ranging 7.5 billion times per second, and the "micro drum, which vibrates at a frequency of 11 million times per second. Specifically, they spent the microwave energy at 56 megahertz (MHz or million cycles per second) per nanometer of drum movement, 1,000 times more than what has been achieved so far. "We have increased the rate at which these two instruments communicate with each other," said Teufel. The movement of the drum will last hundreds of microseconds, according to the article, a relatively long time in the fast quantum world.

When the drum vibrates, the capacitance changes and the mechanical motion modulates the properties of the electrical circuit. It works the same principle in a microphone and an FM radio, but here the natural movement of the drum, usually at a frequency, is transmitted to the listener in the laboratory.

The experiment is a step towards entanglement (an odd quantum state that correlates the properties of objects) between microwave photons and the movement of the drum, said Teufel, who adds that the device has the highest coupling strength and lower energy losses required to generate entanglement. The drum is a key milestone in the efforts of NIST to develop components for superconducting quantum computers and quantum simulations.