Articles you may be interested inIntrinsic optical bistability in a two-subband system in a semiconductor quantum well: Analytical results J. Appl. Phys. 109, 063109 (2011); 10.1063/1.3553871 Effect of Coulomb interaction on nonlinear (intensity-dependent) optical processes and intrinsic bistability in a quantum well under the electric and magnetic fields J. Appl. Phys. 109, 053101 (2011); 10.1063/1.3553641 Intrinsic optical bistability of thin films of linear molecular aggregates: The two-exciton approximation Intrinsic optical bistability of thin films of linear molecular aggregates: The one-exciton approximation Mirrorless optical bistability of an ultrathin glassy film built up of oriented J-aggregates: Effects of two-exciton states and exciton-exciton annihilation

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The problem is examined whether a bistable behavior of optical response of a dimer really exists. We carry out an exact treatment of this problem based on the two-molecule density matrix, without its representation in the form of a product of the one-molecule density matrices of each molecule composing the dimer. Our conclusion is that the bistability discussed is an artifact originating from the splitting procedure. A condition for getting the bistable optical response from a linear chain of a large number of monomers is also formulated.

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