# Generators of nonclassical states by a combination of linear coupling of boson modes, Kerr nonlinearity, and 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 two-photon absorption allowing the generation of the phase states. In the four-mode design, the scheme emulates a nonlocal absorption which produces an entangled state of two uncoupled modes. We also note that in the latter case and in the case of phase state generation the output state is in the linear mode, which prevents its subsequent degradation by strong losses accompanying a strong Kerr nonlinearity.

- Authors:

- Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, Santo Andre, SP, 09210-170 (Brazil)
- Institute of Physics, Belarus National Academy of Sciences, F. Skarina Ave. 68, Minsk 220072 (Belarus)

- Publication Date:

- OSTI Identifier:
- 22058764

- Resource Type:
- Journal Article

- Journal Name:
- Physical Review. A

- Additional Journal Information:
- Journal Volume: 84; Journal Issue: 1; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; COUPLING; KERR EFFECT; NONLINEAR PROBLEMS; OPTICAL FIBERS; OPTICAL MODES; PHOTONS; QUANTUM ENTANGLEMENT; QUANTUM STATES; VISIBLE RADIATION

### Citation Formats

```
Shchesnovich, V. S., and Mogilevtsev, D.
```*Generators of nonclassical states by a combination of linear coupling of boson modes, Kerr nonlinearity, and strong linear losses*. United States: N. p., 2011.
Web. doi:10.1103/PHYSREVA.84.013805.

```
Shchesnovich, V. S., & Mogilevtsev, D.
```*Generators of nonclassical states by a combination of linear coupling of boson modes, Kerr nonlinearity, and strong linear losses*. United States. doi:10.1103/PHYSREVA.84.013805.

```
Shchesnovich, V. S., and Mogilevtsev, D. Fri .
"Generators of nonclassical states by a combination of linear coupling of boson modes, Kerr nonlinearity, and strong linear losses". United States. doi:10.1103/PHYSREVA.84.013805.
```

```
@article{osti_22058764,
```

title = {Generators of nonclassical states by a combination of linear coupling of boson modes, Kerr nonlinearity, and strong linear losses},

author = {Shchesnovich, V. S. and Mogilevtsev, D.},

abstractNote = {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 two-photon absorption allowing the generation of the phase states. In the four-mode design, the scheme emulates a nonlocal absorption which produces an entangled state of two uncoupled modes. We also note that in the latter case and in the case of phase state generation the output state is in the linear mode, which prevents its subsequent degradation by strong losses accompanying a strong Kerr nonlinearity.},

doi = {10.1103/PHYSREVA.84.013805},

journal = {Physical Review. A},

issn = {1050-2947},

number = 1,

volume = 84,

place = {United States},

year = {2011},

month = {7}

}