Few-Qubit lasing in circuit QED

Abstract

Motivated by recent experiments, which demonstrated lasing and cooling of the electromagnetic modes in a resonator coupled to a superconducting qubit, we describe the specific mechanisms creating the population inversion, and we study the spectral properties of these systems in the lasing state. Different levels of the theoretical description, i.e., the semi-classical and the semi-quantum approximation, as well as an analysis based on the full Liouville equation are compared. We extend the usual quantum optics description to account for strong qubit-resonator coupling and include the effects of low-frequency noise. Beyond the lasing transition we find for a single- or few-qubit system the phase diffusion strength to grow with the coupling strength, which in turn deteriorates the lasing state.

Prepared for the proceedings of the Nobel Symposium 2009, Qubits for future quantum computers, May 2009 in Goeteborg, Sweden. Published version

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Cited by in corpus (20)

• Microwave photonics with superconducting quantum circuits
• Lasing and transport in a quantum dot-resonator circuit
• Lasing without Inversion in Circuit Quantum Electrodynamics
• Subradiant split Cooper pairs
• Single-qubit lasing in the strong-coupling regime
• Tunable photonic cavity coupled to a voltage-biased double quantum dot system: Diagrammatic NEGF approach
• Dissipative dynamics of a two-qubit system: Four-level lasing
• Effects of lasing in a one-dimensional quantum metamaterial
• Thermometry and memcapacitance with qubit-resonator system
• Quantum dynamics of a driven three-level Josephson-atom maser
• Creating photon-number squeezed strong microwave fields by a Cooper-pair injection laser
• Lasing in circuit quantum electrodynamics with strong noise
• First order dipolar phase transition in the Dicke model with infinitely coordinated frustrating interaction
• Driving-induced resonance narrowing in a strongly coupled cavity-qubit system
• Lasing in a coupled hybrid double quantum dot-resonator system
• Superconducting quantum metamaterials as active lasing medium: Effects of disorder
• Probabilistic motional averaging
• Lasing and transport in a coupled quantum dot-resonator system
• Circular-polarization sensitive metamaterial based on triple quantum-dot molecules
• Entanglement versus cooling in the system of a driven pair of two-level qubits longitudinally coupled with a boson mode field