Thursday 20 May 2010

Working in Ottawa today --Quantum Optics

Good morning folks,
I will be working today in Ottawa.
More fun than the dentist, but a pale comparison to being on a golf course.
And a special news item for propeller heads: Physicists at the Max Planck Institute of Quantum Optics have created a system based on a single atom that they’re calling a ”quantum optical transistor.” The transistor could someday serve as part of a quantum computer or as a node of a quantum data network.
Their process relies on a complex light manipulation technique called electromagnetically induced transparency (EIT). In EIT, one beam of light controls the properties of another, much as the gate voltage controls current through a regular transistor. The researchers demonstrated EIT through the mediation of a single atom, which is a first; previously the technique was applied to hundreds of thousands of atoms in a gas.
Normally, laser beams don’t interact with one another, but under certain conditions, you can force them to. The German researchers started by placing a rubidium atom in an optical cavity—two tiny mirrors spaced just half a millimeter apart. They aimed a laser into the cavity, tuning it so that the atom inside reflected it. They then fired a second laser of a different frequency, called the control laser, into the cavity at a right angle to the first. Tuning the second laser just so let them ”create the condition of transparency,” says Figueroa: The first laser’s light sailed right through. That gave the cavity system two states, transparent and opaque, analogous to the on-off states of a classical transistor.
Yes, very cool beans!
Have a good day, interact often.
Sent from my BlackBerry wireless handheld -- Envoyé de mon sans fil portatif BlackBerry

1 comment:

  1. The Ottawa Senators are one of several teams to keep an eye on during the expansion draft process.

    The custom nhl jerseys Sens are jerseys store in a bit of custom jerseys store a sticky situation when it comes custom nba jerseys to their defense. They asked Dion Phaneuf to waive his no-movement clause so game jerseys they limited jerseys could expose him in the Vegas draft custom nfl jerseys next week, but he said no.

    They have Erik cheap nfl jerseys Karlsson, Cody Ceci wholesale nfl jerseys and Marc Methot that they likely want nfl jerseys to custom mlb jerseys protect. Unfortunately for them, they custom jerseys just can’t elited jerseys keep all three (as of right now) because they have to honor Phaneuf’s no-movement clause.