# Modified nonclassical coherent state: Squeezing, antibunching, sub-Poissonian photon statistics, realization scheme with the {chi}{sup (2)}-nonlinearity, and generation of a macroscopic entangled state

## Abstract

The nonlinear {chi}{sup (2)} Mach-Zehnder interferometer is proposed as a device for conditional generation of a modified coherent nonclassical state. We show that the generated macroscopic state exhibits nonclassical effects, such as squeezing, photon antibunching, and sub-Poissonian statistics. The modified coherent state generates a macroscopic entangled state. The scheme works without the photon number resolving detection but requires high-efficiency photodetectors. We explain the mechanism of generation of the modified coherent non-classical state.

- Authors:

- Korea Institute for Advanced Study, School of Computational Sciences (Korea, Republic of), E-mail: sap@kias.re.kr

- Publication Date:

- OSTI Identifier:
- 21072501

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 104; Journal Issue: 4; Other Information: DOI: 10.1134/S1063776107040048; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANNIHILATION OPERATORS; EIGENSTATES; MACH-ZEHNDER INTERFEROMETER; NONLINEAR PROBLEMS; PHOTODETECTORS; PHOTONS; QUANTUM ENTANGLEMENT; QUANTUM MECHANICS; STATISTICS

### Citation Formats

```
Podoshvedov, S. A..
```*Modified nonclassical coherent state: Squeezing, antibunching, sub-Poissonian photon statistics, realization scheme with the {chi}{sup (2)}-nonlinearity, and generation of a macroscopic entangled state*. United States: N. p., 2007.
Web. doi:10.1134/S1063776107040048.

```
Podoshvedov, S. A..
```*Modified nonclassical coherent state: Squeezing, antibunching, sub-Poissonian photon statistics, realization scheme with the {chi}{sup (2)}-nonlinearity, and generation of a macroscopic entangled state*. United States. doi:10.1134/S1063776107040048.

```
Podoshvedov, S. A.. Sun .
"Modified nonclassical coherent state: Squeezing, antibunching, sub-Poissonian photon statistics, realization scheme with the {chi}{sup (2)}-nonlinearity, and generation of a macroscopic entangled state". United States.
doi:10.1134/S1063776107040048.
```

```
@article{osti_21072501,
```

title = {Modified nonclassical coherent state: Squeezing, antibunching, sub-Poissonian photon statistics, realization scheme with the {chi}{sup (2)}-nonlinearity, and generation of a macroscopic entangled state},

author = {Podoshvedov, S. A.},

abstractNote = {The nonlinear {chi}{sup (2)} Mach-Zehnder interferometer is proposed as a device for conditional generation of a modified coherent nonclassical state. We show that the generated macroscopic state exhibits nonclassical effects, such as squeezing, photon antibunching, and sub-Poissonian statistics. The modified coherent state generates a macroscopic entangled state. The scheme works without the photon number resolving detection but requires high-efficiency photodetectors. We explain the mechanism of generation of the modified coherent non-classical state.},

doi = {10.1134/S1063776107040048},

journal = {Journal of Experimental and Theoretical Physics},

number = 4,

volume = 104,

place = {United States},

year = {Sun Apr 15 00:00:00 EDT 2007},

month = {Sun Apr 15 00:00:00 EDT 2007}

}

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