Generalized SU(2) covariant Wigner functions and some of their applications - IOPscience
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The possibility of constructing a complete, continuous Wigner function for any quantum
system has been a subject of investigation for over 50 years. A key system that has served to …

Since the very early days of quantum theory there have been numerous attempts to interpret
quantum mechanics as a statistical theory. This is equivalent to describing quantum states …

The state of quantum systems, their energetics, and their time evolution is modeled by
abstract operators. How can one visualize such operators for coupled spin systems? A …

This contribution addresses the quantum picture of polarization for two-mode harmonic
electromagnetic fields. Because of electric field commutation relations, the quantum electric …

We discuss collapse and revival of Rabi oscillations in a system comprising a qubit and a
“big spin”(made of N qubits, or spin-1/2 particles). We demonstrate a regime of behavior …

We study the tomography of multispin quantum states in the context of finite-dimensional
Wigner representations. An arbitrary operator can be completely characterized and …

We compare the continuous and discrete truncated Wigner approximations of various spin
models' dynamics to exact analytical and numerical solutions. We account for all …

We measure complete and continuous Wigner functions of a two-level cesium atom in both a
nearly pure state and highly mixed states. We apply the method [T. Tilma, Phys. Rev. Lett …

Phase-space representations as given by Wigner functions are a powerful tool for
representing the quantum state and characterizing its time evolution in the case of infinite …