The Goldstone mode of planar optical parametric oscillators
| dc.creator | Wouters, Michiel | |
| dc.creator | Carusotto, Iacopo | |
| dc.date | 2006-06-29 | |
| dc.date.accessioned | 2026-07-07T07:12:56Z | |
| dc.date.available | 2026-07-07T07:12:56Z | |
| dc.description | We propose an experimental setup to probe the low-lying excitation modes of a parametrically oscillating planar cavity, in particular the soft Goldstone mode which appears as a consequence of the spontaneously broken U(1) symmetry of signal/idler phase rotations. Differently from the case of thermodynamical equilibrium, the Goldstone mode of such a driven-dissipative system is an overdamped mode, whose linewidth goes to zero in the long-wavelength limit. When the phase of the signal/idler emission is pinned by an additional laser beam in the vicinity of the signal emission, the U(1) symmetry is explicitely broken and a gap opens in the Goldstone mode dispersion. This results in a dramatic broadening of the response to the probe. Quantitative predictions are given for the case of semiconductor planar cavities in the strong exciton-photon coupling regime. | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0606755 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0606755 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/112260 | |
| dc.subject | Other Condensed Matter | |
| dc.title | The Goldstone mode of planar optical parametric oscillators | |
| dc.type | text |