gentzen's latest activity
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gentzen replied to the thread I Modern View of Quantum Phenomena.Suppose you start with the state ##|\psi_{\alpha,\beta}\rangle=\alpha |z+\rangle+\beta|z-\rangle##. Then there is a measurement that...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.The state is entangled, but pines-demon tried to get rid of the continuous measurement outcomes, to be closer to typical Bell...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.You mean, because they are not normalizable? But they are well defined in a suitable space of distributions, and one can form their...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.$$(\alpha|x\rangle+\beta|p\rangle)(\alpha^*\langle x|+\beta^*\langle p|)=|\alpha|^2|x\rangle\langle x|+|\beta|^2|p\rangle\langle...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.If you define it like this, then ##S_x## and ##S_p## are already matrices (or rather operators), basically ##S_x=\int_0^\infty dx\...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.It just makes it easy for me to see that the state is not time invariant. With the signs of your state, I would have been a bit less...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.Because the spin in the normal "measurements showing Bell's inequality violations" is constant in time. The position is not, which on...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.Because starting with |p>|-p> corresponds to the EPR description of the experiment (the total momentum is zero). In principle, one...
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gentzen replied to the thread I Modern View of Quantum Phenomena.It measures the spin of the particle in some specific direction, as it was initially before the bending of the beam. (I am still a bit...
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gentzen replied to the thread I Modern View of Quantum Phenomena.If I have two entangled particles in "two beams" with known fixed direction, then I want to measure their spin, not the spin of two...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.Now I understand what you wanted to say: The initial state ##|\psi\rangle## for the EPR experiment can be assumed to be ψ... I guess...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.Maybe read what you wrote exactly, see whether it makes any sense to you. And then ask yourself, how anybody who wants to have a serious...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.OK, what has this to do with my question, or with anything you wrote in your answer? Even in 1D, it makes an important difference...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.The issue is that your answer doesn't help me to see how the entangled particles can be used for Bell's inequality violations. What do...
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gentzen replied to the thread I Violation of Bell Inequality with unentangled photons.If you look at the actual combined state of the two subsystem that may be entangled, then you often end up with a density matrix instead...
