Experimental Issues inQuantum Measurement在量子测量问题.pptVIP

Experimental Issues in Quantum Measurement FIRST TOPIC: Interruptions Some references The Copenhagen Viewpoint (Toronto description of) The Bohr-Einstein debates Feynman’s Rules for interference The quantum eraser Must there be a disturbance? The EPR “Paradox” –– and superluminal signalling? Some important lessons Quantum CAT scans Predicting the past ? Predicting the past... Pick a box, any box... Summary: the kinds of thingswe’ll cover... Being a quantum physicist is like being an alcoholic. ...the first step is to admit you have a problem. Today, 7.10.03: OVERVIEW – a survey of some important situations in q. msmt. theory (“why bother coming to these lectures?”) 13.10.03: SOME TECHNICAL BACKGROUND – introduction to “standard” quantum measurement theory (measurement postulate, collapse, von Neumann msmts, density matrices and entanglement,...) 20.10.03: THE QUANTUM ERASER – Bohr-Einstein debates – Scully, Englert, Walther: complementarity vs uncertainty – Two-photon experiments – Alternate pictures (collapse vs correlations) 27.10.03–: OTHER MODERN EXPERIMENTS... MAKE THEM! I’m going too fast. I’m going too slow. You want to correct my grammar. You disagree with something I said. I seem to disagree with something I’ve said. You have a question about something I’ve said. You have a question about something completely unrelated. VALID REASONS TO INTERRUPT ME: I will not be following any particular textbook, but for obvious reasons, will draw disproportionately from experiments I myself have worked on... Appropriate references will be provide as the lectures progress. General references on quantum mechanics: Your favorite QM text + Shankar’s Principles of QM Background on the quantum measurement problem: Wheeler Zurek’s Quantum Theory and Measurement Bell’s Speakable and Unspeakable in Quantum Mechanics My general perspective on these issues: References on my web page, http://www.phy