Correlated emission lasing in harmonic oscillators coupled via a single three-level artificial atom

Abstract

A single superconducting artificial atom provides a unique basis for coupling electromagnetic fields and photons hardly achieved with a natural atom. Bringing a pair of harmonic oscillators into resonance with transitions of the three-level atom converts atomic spontaneous processes into correlated emission dynamics. We demonstrate two-mode correlated emission lasing on harmonic oscillators coupled via the fully controllable three-level artificial atom. Correlation of two different color emissions reveals itself as equally narrowed linewiths and quench of their mutual phase-diffusion. The mutual linewidth is more than four orders of magnitude narrower than the Schawlow-Townes limit. The interference between the different color lasing fields demonstrates the two-mode fields are strongly correlated.

5 pages, 4 figures + supplemenntary materials accepted for publication in Phys. Rev. Lett

References in corpus (7)

• Single artificial-atom lasing
• Generating Entangled Microwave Radiation Over Two Transmission Lines
• Tuning the Gap of a Superconducting Flux Qubit
• Sisyphus cooling and amplification by a superconducting qubit
• Large Dispersive Shift of Cavity Resonance Induced by a Superconducting Flux Qubit in the Straddling Regime
• Dressed-state amplification by a superconducting qubit
• Circuit electromechanics with single photon strong coupling

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• Realization of microwave amplification, attenuation, and frequency conversion using a single three-level superconducting quantum circuit
• One-step implementation of a multi-target-qubit controlled-phase gate with photonic qubits encoded via eigenstates of the photon-number parity operator
• Creation of a squeezed photon distribution using artificial atoms with broken inversion symmetry
• Thermally pumped on-chip maser
• Performance of continuous quantum thermal devices indirectly connected to environments