The covariance matrix is one of the most useful compressed descriptions of a continuous-variable quantum state. It records the widths and corr...
The Wigner function is sometimes introduced merely as a way to draw a quantum state in phase space. That description is incomplete. When it is...
A daily reference guide to Jharkhand university officers, authorities, committees, appointments, finance, grievances, colleges, and the State ...
Quantum mutual information answers a concrete question: how much information is shared by two chosen subsystems? For continuous-variable syste...
The preceding chapters produced exact initial states and exact derivatives at the quench. A derivative is not a trajectory. To investigate osc...
Covariances describe widths and pairwise correlations. They do not describe an entire non-Gaussian wavefunction. A state can therefore have no...
The angular quench creates dynamics in a state that was stationary before $t=0$. The first experimentally accessible question is therefore loc...
A quantum quench is a rapid, controlled change of a Hamiltonian parameter. The state is continuous through an ideal sudden switch, but from th...
This chapter constructs exact non-Gaussian preparation states from the one-dimensional Schrödinger equation. The construction is algebraic: a ...
This chapter develops a two-dimensional charged oscillator from the basic minimal-coupling rule. No prior magnetic-oscillator calculation is a...
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