Control of the Geometric Phase in Two Open Qubit–Cavity Systems Linked by a Waveguide

Abstract

We explore the geometric phase in a system of two non-interacting qubits embedded in two separated open cavities linked via an optical fiber and leaking photons to the external environment. The dynamical behavior of the generated geometric phase is investigated under the physical parameter effects of the coupling constants of both the qubit–cavity and the fiber–cavity interactions, the resonance/off-resonance qubit–field interactions, and the cavity dissipations. It is found that these the physical parameters lead to generating, disappearing and controlling the number and the shape (instantaneous/rectangular) of the geometric phase oscillations.

Nonclassical Effects Based on Husimi Distributions in Two Open Cavities Linked by an Optical Waveguide

“…Nowadays, the atomic and semiconductor cavity QED systems [ 7 , 8 , 9 ] present several applications in quantum computing to conceive quantum gates and networks [ 10 ]. In particular, spatially separated qubits are proposed as potential physical realization for quantum networks [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ].…”

Robustness of Generated Geometric Phase of Quantum Wells in Two Open Waveguide-Coupled Optical Cavities

“…It has also contributed to the significant applications in quantum information and computation for developing robust quantum systems such as: superconducting circuits [14], trapped ions [15] and atoms in cavity field [16]. The dynamics of the geometric phase were investigated in cavity-QED systems [17], phase-qubit system coupled to a LC circuit [18], trapped ion system with Stark shift [19], open qubit-cavity system [20] and a two-level system undergoing pure dephasing [21].…”