Quantum coherence induced by a flux qubit coupled by a resonator coherent field through a two-photon interaction

The intrinsic decoherence effects on a flux qubit coupled to a resonator through a two-photon interaction where the resonator field is initially in coherent and even coherent states are investigated. The qubit-resonator entanglement and coherence loss (mixedness) of the system and its subsystems are examined using entropy and negativity. The ability of the qubit-resonator interaction to generate quantum coherence (qubit-resonator entanglement and the mixedness) is shown to be dependent on the initial cavity non-classicality, detuning, and decoherence. For larger values of the qubit-resonator detuning, the initial resonator non-classicality can enhance the generation and stability of quantum coherence. The decoherence degrades the qubit-resonator entanglement and destroys the sudden death-birth entanglement.

Compton Shifting with Scattering Angle and Masses of Order 10-31kg To 1-0-27kg

The objective of this work is to study and observed the Compton shift of elementary particles masses lies in between 10-31kg to 10-27kg within the angle between 0 radians to 3 radians. The observation shows Compton shifting ranges from 10-11m to 0.5 x 10-18m . This nature of shifting is the same for all the considered masses for the same angle of scattering. Therefore this scattering is suitable for other elementary particles that lie in between considered masses. Hence the validity of Compton shifting can be used for other elementary particles scattering as elementary particles masses in between 10-31kg to 10-27kg as having similar nature or original Compton scattering of electron-photon interaction.