Highly Nonclassical Quantum States and Environment Induced Decoherence

PART I......Page 5
Introduction......Page 6
Formation of system-environment entanglement......Page 9
Dynamical stability of quantum states......Page 13
Interaction with the environment......Page 15
Master equations......Page 16
Wigner functions......Page 19
Partial differential equations......Page 21
PART II......Page 23
The Morse oscillator as a model of a vibrating diatomic molecule......Page 24
Behavior of expectation values as a function of time......Page 26
Time evolution of the Wigner function of the system......Page 28
Measuring nonclassicality......Page 29
Conclusions......Page 30
Decoherence of molecular wave packets......Page 31
A master equation describing decoherence in the Morse system......Page 32
Time evolution of the expectation values......Page 36
Decoherence times......Page 37
Wigner function description of the decoherence......Page 39
Conclusions......Page 42
Two-level atoms and decoherence......Page 43
Description of the model......Page 44
The initial stage of the time evolution......Page 45
Time scales......Page 47
The direction of the decoherence......Page 48
Wigner functions of four component Schrödinger cat states......Page 50
Conclusions......Page 52
Description of the system......Page 55
Preparation of subradiant states......Page 57
Comparison with experiments......Page 60
Conclusions......Page 62
Summary......Page 63
Bibliography......Page 65