Gain without inversion in quantum systems with broken parities

Abstract

For a quantum system with broken parity symmetry, selection rules can not hold and cyclic transition structures are generated. With these loop-transitions we discuss how to achieve inversionless gain of the probe field by properly setting the control and auxiliary fields. Possible implementations of our generic proposal with specific physical objects with broken parities, e.g., superconducting circuits and chiral molecules, are also discussed.

12 pages, 4 figures

References in corpus (8)

• Resonance Fluorescence of a Single Artificial Atom
• Electromagnetically induced transparency on a single artificial atom
• Measurement of Autler-Townes and Mollow transitions in a strongly driven superconducting qubit
• Two-photon probe of the Jaynes-Cummings model and symmetry breaking in circuit QED
• Electromagnetically induced transparency controlled by a microwave field
• Generalized Stern-Gerlach Effect for Chiral Molecules
• Direct Observation of Coherent Population Trapping in a Superconducting Artificial Atom
• Electromagnetically induced transparency in superconducting quantum circuits : Effects of decoherence, tunneling and multi-level cross-talk

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• Distinguishing left- and right-handed molecules by two-step coherent pulses
• Efficient single-photon frequency conversion in the microwave domain using superconducting quantum circuits
• Microwave degenerate parametric down-conversion with a single cyclic three-level system in circuit QED
• Evading thermal population influence in enantiomeric-specific state transfer based on a cyclic three-level system via ro-vibrational transitions
• Tunable one-dimensional microwave emissions from cyclic-transition three-level atoms
• Partially dark optical molecule via phase control
• Nonreciprocal transition between two nondegenerate energy levels
• Nonreciprocal transition between two indirectly coupled energy levels
• Controlling laser spectra in a phaseonium photonic crystal using maser
• Phase sensitive photonic flash
• Three-dimensional compacted optical waveguide couplers designed by invariant engineerings