Theoretical Analysis of Quantum Electrodynamic

Chen Lan-li

The paper introduces the Aharonov-Bohm effect in magnetic field with theories of classical electrodynamics and quantum mechanics.It expounds the limitation of classical electrodynamics,the stringency,integrity and scientific predictability of quantum mechanics via comparative analysis.

Oscar Wallace Greenberg

C. M. Quintana

Abstract : Circuit Quantum Electrodynamics (cQED) is a highly promising platform for quantum control, quantum simulation, and quantum optics in a solid-state environment. Such systems consist of arti cial atoms coupled to superconducting resonators, and can be probed with microwave signals on a chip. This thesis theoretically and experimentally studies a method of quantum-limited Josephson parametric ampli cation for the improvement of such microwave measurements. A theoretical analysis of parametric ampli cation with a nonlinear quantum oscillator is given, along with an analysis of a particular implementation with a superconducting coplanar waveguide resonator shunted by an array of SQUIDs. A parametric ampli er chip is designed and a fabrication process is engineered. Measurements and analysis of a successfully fabricated device are presented, and future outlook is discussed.

Kurt Haller

Cao Shuai, Mao-Fa Fang, Jianbin Liu +3 more

Recent years, several ways of implementing quantum games in different physical systems have been presented. In this paper, we perform a theoretical analysis of an experimentally feasible way to implement a two player quantum game in cavity quantum electrodynamic(QED). In the scheme, the atoms interact simultaneously with a highly detuned cavity mode with the assistance of a classical field. So the scheme is insensitive to the influence from the cavity decay and the thermal field, and it does not require the cavity to remain in the vacuum state throughout the procedure.

Julian Schwinger, J. C. Polkinghorne