A Bright Entanglement and Squeezing Generated by an External Pumping Radiation in a Correlated Emission Laser
The quantum and statistical properties of light generated by an external classical field in a correlated emission laser with a parametric amplifier and coupled to a squeezed vacuum reservoir are investigated using the combination of the master and stochastic differential equations. First, the soluti...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | International Journal of Optics |
| Online Access: | http://dx.doi.org/10.1155/2020/3823916 |
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| _version_ | 1832559977724641280 |
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| author | Chimdessa Gashu |
| author_facet | Chimdessa Gashu |
| author_sort | Chimdessa Gashu |
| collection | DOAJ |
| description | The quantum and statistical properties of light generated by an external classical field in a correlated emission laser with a parametric amplifier and coupled to a squeezed vacuum reservoir are investigated using the combination of the master and stochastic differential equations. First, the solutions of the cavity-mode variables and correlation properties of noise forces associated to the normal ordering are obtained. Next, applying the resulting solutions, the mean photon number of the separate cavity modes and their crosscorrelation, smallest eigenvalue of the symplectic matrix, mean photon number, intensity difference fluctuation, photon number variance, and intensity correlation are derived for the cavity-mode radiation. The entanglement produced is studied employing the logarithmic negativity criterion. It is found that pumping atoms from the lower energy state to excited state, introducing the nonlinear crystal into the cavity and coupling the system to a biased noise fluctuation, generate a bright and strong squeezing and entanglement with enhanced statistical properties although the atoms are initially in the ground state. |
| format | Article |
| id | doaj-art-715ace442b8745fa8e68b38cc9e60b80 |
| institution | Kabale University |
| issn | 1687-9384 1687-9392 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Optics |
| spelling | doaj-art-715ace442b8745fa8e68b38cc9e60b802025-02-03T01:28:43ZengWileyInternational Journal of Optics1687-93841687-93922020-01-01202010.1155/2020/38239163823916A Bright Entanglement and Squeezing Generated by an External Pumping Radiation in a Correlated Emission LaserChimdessa Gashu0Department of Physics, Jimma University, P.O. Box 378, Jimma, EthiopiaThe quantum and statistical properties of light generated by an external classical field in a correlated emission laser with a parametric amplifier and coupled to a squeezed vacuum reservoir are investigated using the combination of the master and stochastic differential equations. First, the solutions of the cavity-mode variables and correlation properties of noise forces associated to the normal ordering are obtained. Next, applying the resulting solutions, the mean photon number of the separate cavity modes and their crosscorrelation, smallest eigenvalue of the symplectic matrix, mean photon number, intensity difference fluctuation, photon number variance, and intensity correlation are derived for the cavity-mode radiation. The entanglement produced is studied employing the logarithmic negativity criterion. It is found that pumping atoms from the lower energy state to excited state, introducing the nonlinear crystal into the cavity and coupling the system to a biased noise fluctuation, generate a bright and strong squeezing and entanglement with enhanced statistical properties although the atoms are initially in the ground state.http://dx.doi.org/10.1155/2020/3823916 |
| spellingShingle | Chimdessa Gashu A Bright Entanglement and Squeezing Generated by an External Pumping Radiation in a Correlated Emission Laser International Journal of Optics |
| title | A Bright Entanglement and Squeezing Generated by an External Pumping Radiation in a Correlated Emission Laser |
| title_full | A Bright Entanglement and Squeezing Generated by an External Pumping Radiation in a Correlated Emission Laser |
| title_fullStr | A Bright Entanglement and Squeezing Generated by an External Pumping Radiation in a Correlated Emission Laser |
| title_full_unstemmed | A Bright Entanglement and Squeezing Generated by an External Pumping Radiation in a Correlated Emission Laser |
| title_short | A Bright Entanglement and Squeezing Generated by an External Pumping Radiation in a Correlated Emission Laser |
| title_sort | bright entanglement and squeezing generated by an external pumping radiation in a correlated emission laser |
| url | http://dx.doi.org/10.1155/2020/3823916 |
| work_keys_str_mv | AT chimdessagashu abrightentanglementandsqueezinggeneratedbyanexternalpumpingradiationinacorrelatedemissionlaser AT chimdessagashu brightentanglementandsqueezinggeneratedbyanexternalpumpingradiationinacorrelatedemissionlaser |