In the geometry of quantum evolutions, a geodesic path is viewed as a path of minimal
statistical length connecting two pure quantum states along which the maximal number of …

Geometric intuition is a crucial tool to obtain deeper insight into many concepts of physics. A
paradigmatic example of its power is the Bloch ball, the geometrical representation for the …

The symmetry SU (2) and its geometric Bloch Sphere rendering have been successfully
applied to the study of a single qubit (spin-1/2); however, the extension of such symmetries …

The bidirectional steerability between different-size subsystems is discussed for a single
parameter accelerated qubit–qutrit system. The decoherence due to the mixing and …

We consider two (natural) families of observables O k for systems with dimension d= 3, 4, 5:
the spin observables S x, S y, and S z, and the observables that have mutually unbiased …

Pawłowski and Winter's hyperbit theory, proposed in 2012, presented itself as an alternative
to quantum theory, suggesting novel ways of redefining entanglement and classical …

The joint numerical range W (F) of three hermitian 3-by-3 matrices F=(F 1, F 2, F 3) is a
convex and compact subset in R 3. Generically we find that W (F) is a three-dimensional …

In quantum mechanics, geometry has been demonstrated as a useful tool for inferring
nonclassical behaviors and exotic properties of quantum systems. One standard approach …

By using the recently introduced parametrization of an n-dimensional density matrix in terms
of the indices of population asymmetry and the intrinsic coherences, we define descriptors in …

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