John Preskill
Faculty, Quantum Information
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Faculty, Quantum Information
[youtube=http://www.youtube.com/watch?v=hKFecm9NKbM?vq=hd720&rel=0&showinfo=0] by Jorge Cham. Ok, this is where things get weird. If quantum computers, femtometer motions or laser alligators weren't enough, let's throw in fractionalized electrons, topological surfaces and strings that go to the end of time. To be honest, the idea that an electron can't be split hadn't even occurred to me before my conversation with Gil [...]
[youtube=http://www.youtube.com/watch?v=1zD1U1sIPQ4?wmode=transparent&autohide=1&egm=0&hd=1&iv_load_policy=1&modestbranding=1&rel=0&showinfo=0&showsearch=0] by Jorge Cham How do you make something that has never existed before? I often get suggestions for comics I should draw, which I welcome because A) I like to think of PHD Comics as a global collaborative effort and B) after 17 years, I'm almost out of ideas. This particular suggestion came from Chen-Lung [...]
[youtube=http://www.youtube.com/watch?v=pktWhH6m_DM?vq=hd720&rel=0&showinfo=0] by Jorge Cham What does it mean for something to be Quantum? I have to confess, I don't know. My Ph.D was in Robotics and Kinematics, so my neurons are deeply trained to think in terms of classical dynamics. I asked my siblings (two engineers and one architect) what comes to mind for them [...]
This blog has made the terrible decision to ask me to do more regular posts. Well, before trial and error catches up with me, let’s have some fun together… As young single Caltech graduate students, we have become accustomed to making hearts race with our science. We turn measurements and derivations into heart palpitations. While this [...]
A dark-haired man leans over a marble balustrade. In the ballroom below, his assistants tinker with animatronic elephants that trumpet and with potions for improving black-and-white photographs. The man is an inventor near the turn of the 20th century. Cape swirling about him, he watches technology wed fantasy. Welcome to the steampunk genre. A stew [...]
John Preskill's lecture, Introduction to Quantum Information (part 1 of 2), given at the 12th Canadian Summer School on Quantum Information in 2012.
Part 2 of John Preskill’s lecture, Introduction to Quantum Information, given at the 12th Canadian Summer School on Quantum Information in 2012.
Oh my, I ate the whole thing again. Are physicists eligible for Ben and Jerry’s sponsorships? I’m not sure what covers more ground when I go for a long run — my physical body or my metaphorical mind? Chew on that one, zen scholar! Anyways, I basically wrote the following post during [...]
I have a multiple choice question for you. What's inside a black hole? (A) An unlimited amount of stuff. (B) Nothing at all. (C) A huge but finite amount of stuff, which is also outside the black hole. (D) None of the above. The first three answers all seem absurd, boosting the credibility of (D). [...]