One- and three-photon dynamical Casimir effects using a nonstationary cyclic qutrit
Abstract
We consider a nonstationary circuit quantum electrodynamics setup in which a three-level artificial atom in the Δ configuration interacts with a single-mode cavity field of natural frequency ω . It is demonstrated that when some atomic energy level(s) undergoes a weak harmonic modulation, photons can be generated from vacuum via effective one- and three-photon transitions, while the atom remains approximately in the ground state. These phenomena occur in the dispersive regime when the modulation frequency is accurately tuned near ω and 3 ω , respectively, and the generated field states exhibit strikingly different statistics from the squeezed vacuum state attained in the standard cavity dynamical Casimir effect.
- Publication:
-
Physical Review A
- Pub Date:
- August 2018
- DOI:
- 10.1103/PhysRevA.98.022520
- arXiv:
- arXiv:1805.04887
- Bibcode:
- 2018PhRvA..98b2520D
- Keywords:
-
- Quantum Physics
- E-Print:
- 7 pages, 3 figures