I have just read the article here: http://www.technologyreview.com/Infotech/21086/?a=f about researchers being able to control the position of a single electron in a silicon circuit.
I'm no scientist and my knowledge of quantum mechanics is laughable but I am a keen albeit frequently perplexed enthusiast. My puzzlement is when the article states that "the electron [was] in two places at once". I can't conceive how something can be in two places at once. Surely if there was an electron in one place and then a counterpart appeared somewhere else, the original electron is the one that hasn't moved from it's original position and the newcomer in a different location is merely a copy?
For something to be a different entity it surely requires that the entity is both:
- in another location (i.e. not sharing the space of another entity), and
- of itself (i.e. not part of the same matter of another entity)
Why is it the case that this '2nd' electron is not applicable to this definition?