2015/03/28 by Bijay Kumar Agarwalla, Konstantin E. Dorfman, Shaul Mukamel
Computer Science · Physics and Astronomy · #Electric field #Field (mathematics) #Non-equilibrium thermodynamics #Nonlinear system #Phase (matter) #Physics #Quantum #Quantum Information and Cryptography #Quantum electrodynamics #Quantum mechanics #Quantum optics and atomic interactions #SIGNAL (programming language) #Spectroscopy and Quantum Chemical Studies #Statistical physics #physics.chem-ph #physics.optics #quant-ph
paper · pdf · doi:10.1103/physreva.91.052501
arxiv created 2015/03/28 · openalex publication_date 2015/05/04 · arxiv updated 2015/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We predict several effects associated with the optical response of systems prepared in a nonequilibrium state by impulsive optical excitations. The linear response depends on the phase of the electric field even if the initial nonequilibrium state has only populations, no coherences. Initial quantum coherences induce additional phase dependence, which also shows new resonances in nonlinear wave mixing. In systems strongly driven by an external optical field, the field frequency generates a phase-dependent probe absorption. This gives further control to manipulate the relative contribution to the linear signal due to initial populations and coherences.