Generators of nonclassical states by combination of the linear coupling of boson modes, Kerr nonlinearity and the strong linear losses

Abstract

We show that the generators of quantum states of light can be built by employing the Kerr nonlinearity, a strong linear absorption or losses and the linear coupling of optical modes. Our setup can be realized, for instance, with the use of the optical fiber technology. We consider in detail the simplest cases of three and four coupled modes, where a strongly lossy mode is linearly coupled to other linear and nonlinear modes. In the three-mode design, our scheme emulates the third-order nonlinear absorption, allowing for generation of the single photon states, or the two-photon absorption allowing to generate the phase states. In the four-mode design, the scheme emulates a non-local absorption which produces an entangled state of two uncoupled modes. We also note that in the latter case and in the case of the phase states generation the output state is in the linear modes, which prevents its subsequent degradation by the strong losses accompanying the strong Kerr nonlinearity.

10 pages, 4 figures; typos in the text and figures were corrected

References in corpus (4)

• Many-Body Physics with Ultracold Gases
• Quantum Zeno dynamics: mathematical and physical aspects
• Controllability of open quantum systems with Kraus-map dynamics
• The three-site Bose-Hubbard model subject to atom losses: the boson-pair dissipation channel and failure of the mean-field approach

Cited by in corpus (4)

• Genuine non-Gaussian entanglement of light and quantum coherence for an atom from noisy multiphoton spin-boson interactions
• Design of the coherent diffusive photon gun for generating non-classical states
• Nonlinear dissipation can combat linear loss
• State engineering of Bose-Einstein condensate in the optical lattice by a periodic sublattice of dissipative sites