Strong and weak coupling of two coupled qubits

Abstract

I investigate the dynamics and power spectrum of two coupled qubits (two-level systems) under incoherent continuous pump and dissipation. New regimes of strong coupling are identified, that are due to additional paths of coherence flow in the system. Dressed states are reconstructed even in the regime of strong decoherence. The results are analytical and offer an exact description of strong-coupling in presence of pumping and decay in a nontrivial (nonlinear) system.

20 pages, 15 reduced quality figures

References in corpus (7)

• Spectroscopy on two coupled flux qubits
• Strong-coupling of quantum dots in microcavities
• Luminescence Spectra of Quantum Dots in Microcavities. II. Fermions
• Luminescence Spectra of Quantum Dots in Microcavities. I. Bosons
• Dephasing of quantum dot exciton polaritons in electrically tunable nanocavities
• Photon statistics from coupled quantum dots
• Two-photon lasing by a single quantum dot in a high-Q microcavity

Cited by in corpus (14)

• Regimes of strong light-matter coupling under incoherent excitation
• Quasi-Chiral Interactions between Quantum Emitters at the Nanoscale
• Cavity versus dot emission in strongly coupled quantum dots-cavity systems
• Effective cavity pumping from weakly coupled quantum dots
• Dynamical properties of nanolasers based on few discrete emitters
• Steady state entanglement of two coupled qubits
• Asymmetric coupling between two quantum emitters
• Density operator of a system pumped with polaritons: A Jaynes-Cummings like approach
• Two photons everywhere
• Unbalanced gain and loss in a quantum photonic system
• Signatures of single site addressability in resonance fluorescence spectra
• Resonance fluorescence of two asymmetrically pumped and coupled two-level systems
• Signatures of coherent energy transfer and exciton delocalization in time-resolved optical cross correlations
• Heat currents in qubit systems