2014/01/31 by J. Ruiz-Rivas, E. del Valle, Elena del Valle +6 · 29 citations
Physics and Astronomy · #Coherence (philosophical gambling strategy) #Coherence time #Cold Atom Physics and Bose-Einstein Condensates #Common emitter #Dissipation #Dissipative system #Laser #Lasing threshold #Observable #Optoelectronics #Photon #Physics #Quantum mechanics #Quantum tunnelling #Random lasers and scattering media #Scaling #Spontaneous emission #Strong Light-Matter Interactions #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physreva.90.033808
published in Physical Review A 90(3) (American Physical Society) · 9 pages, 4 figures, including supplemental material (with 4 pages, 1 figure). This is a shorter version with some modifications in the supplemental material (a gap in the proof was closed and calculations significantly generalized and improved)
arxiv created 2014/02/12 · openalex publication_date 2014/09/04 · arxiv updated 2015/02/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study an array of dissipative tunnel-coupled cavities, each interacting with an incoherently pumped two-level emitter. For cavities in the lasing regime, we find correlations between the light fields of distant cavities, despite the dissipation and the incoherent nature of the pumping mechanism. These correlations decay faster than any power of the distance for arrays in any dimension but become increasingly long ranged with increasing photon tunneling between adjacent cavities. The interaction-dominated and the tunneling-dominated regimes show markedly different scaling of the correlation length which always remains finite due to the finite photon trapping time. We propose a series of observables to characterize the spontaneous buildup of collective coherence in the system.