Radiation induced interaction potential of two qubits strongly coupled with a quantized electromagnetic field

Abstract

We investigate the interaction of two two-level qubits with a single mode quantum field in a cavity without rotating wave approximation and considering that qubits can be located at an arbitrary distance from each other. We demonstrate that there exists a radiation induced interaction potential between atoms. We studied the properties of the system numerically and in addition constructed a simple analytical approximation. It is shown that the observable characteristics are substantially dependent on the distance between the qubits in the strong coupling regime. This allows one to perform the quantum control of the qubits, which can be exploited for the recording and transmission of quantum information.

References in corpus (15)

• Ultrastrong coupling between light and matter
• Ultrastrong coupling regimes of light-matter interaction
• Resolution of Gauge Ambiguities in Ultrastrong-Coupling Cavity QED
• Strong coupling of two individually controlled atoms via a nanophotonic cavity
• Spectral Classification of Coupling Regimes in the Quantum Rabi Model
• Tavis-Cummings model beyond the rotating wave approximation: Quasi-degenerate qubits
• Laser Trapping of Circular Rydberg Atoms
• Multiphoton Jaynes-Cummings Model: Arbitrary Rotations in Fock Space and Quantum Filters
• Photon-mediated localization in two-level qubit arrays
• Entanglement between qubits induced by a common environment with a gap
• Near-resonant light scattering by a sub-wavelength ensemble of identical atoms
• Enhancement of spontaneous entanglement generation via coherent quantum feedback
• Quantum theory of superfluorescence based on two-point correlation functions
• Variational generalized rotating-wave approximation in the two-qubit quantum Rabi model
• Spontaneous emission in a quantum system driven by the resonant field beyond the rotating wave approximation