Recent content by phb1762

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    QHO: Time dependant expectation value of the potential energy

    Summary:: Linear Quantum harmonic oscillator and expectation value of the potential energy (time dependent) Hello, I have attached a picture of the full question, but I am stuck on part b). I have found the expectation value of the <momentum> and the <total energy> However I am struggling with...
    • phb1762
    • Thread
    • Energy Expectation Expectation value Potential Potential energy Quantum mechanics Quantum operator Time Value
    • Replies: 3
    • Forum: Advanced Physics Homework Help
  2. P

    Finding the unitary matrix for a beam splitter

    Thank you so much for your time, that was very helpful!
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    Finding the unitary matrix for a beam splitter

    Ah, so something like this:
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    Finding the unitary matrix for a beam splitter

    I really don’t understand where I’m going wrong, I thought that going in from the top should be inverse of the going in from the left?
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    Finding the unitary matrix for a beam splitter

    Hello, I have some trouble understanding how to construct the matrix for the beam splitter (in a Mach-Zehnder interferometer). I started with deciding my input and output states for the photon. I then use Borns rule, which I have attached below: To get the following for the state space...
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    Calculate the magnitude and direction of the torque

    Homework Statement [/B] a) (a) Assuming the HCl molecule consists of point-like ions (H+ and Cl) separated by 1.0 * 10^-10m, find the dipole moment of the molecule. b) Calculate the magnitude and direction of the torque exerted on this dipole if the molecule is subjected to an external electric...