Best Quasiprobability
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1
The Wigner function represents a quasi-probability distribution in phase space, offering a way to analyze quantum states by mapping them onto a classical-like representation despite not always being positive.
2
Glauber-Sudarshan P representations express quantum states as an overlap integral of wavefunctions with coherent states, enabling classical limit analysis and photon number statistics calculation.
3
The Husimi Q function, a quasiprobability distribution in quantum mechanics, smooths the Wigner function to ensure non-negativity, representing a mixed state as a "fuzzy" phase space density.
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