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My question is in reference to the paper "Three dimensional visualization of a qutrit"(https://arxiv.org/abs/1601.07361). The author's start with a symmetric two qubit density matrix written in the form
$\rho = \frac{1}{4}\left(I\otimes I +\sum_{j}(a_j\sigma_j\otimes I + a_jI\otimes \sigma_j)+ \...
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I am trying to apply covariance property on this Quantum adder transformation in which a two particle input state is mapped onto a two particle output state. I am trying to represent these states into a bloch sphere density operator and apply the covariance condition to the same. I don't know how...
In Schroedinger equation, which is second order differential equation, one normally, equates both $\psi(x)$ and $\psi'(x)$ across the boundary, as boundary conditions.
However, the dirac equation is a first order differential equation. So, if one were to have a dirac equation like $\gamma^{\mu...0
The state of a substance depends on the intermolecular bonds between the molecules of the substance.The stronger the intermolecular bonds , the harder the substance becomes a gas. Iodine molecules form very weak intermolecular bonds but iodine is a liquid at room temperature.Someone explain that ...
