Quantum properties of two-mode entangled coherent states

Ghafourian Momen Razavi, N; Ahanj, A; Sarbishei, M

doi:10.18869/acadpub.ijpr.15.4.415

Quantum properties of two-mode entangled coherent states

Authors

N Ghafourian Momen Razavi

A Ahanj

M Sarbishei

https://doi.org/10.18869/acadpub.ijpr.15.4.415

Abstract

Coherent states are the quantum states, which give the closest description to classical states. Since their superpositions show quantum properties, research on these states has been of great interest. In addition, having nonclassical properties is necessary for quantum correlations. In this paper, we focus on two-mode entangled coherent states which are out of phase, and study the nonclassical properties such as squeezing of quadrature operators, antibunching and oscillatory photon statistics. Then we discuss about their entanglement, which is a quantum correlation in different conditions and compare the results.

Keywords

coherent states

entanglement

quadrature squeezing

1. M O Scully and M S Zubairy, “Quantum Optics”, Cambrige University Press (1997).
2. C C gerry and P L Knight, “Introductory Quantum Optics”, Cambridge University Press (2005).
3. M A Nielsen and I L Chuang, “Quantum Computation and Quantum Information”, Cambridge University press (2000).
4. H Ollivier and W H Zurek, Plys. Rev. Lett. 88 (2001) 1.
5. V Buzek, A Vidiella-Barranco, and P L Knight, Physical Review A 45 (1992) 6570.
6. V Buzek and P L Knight, “Progress in Optics”, Elsevier, Amsterdam (1995).
7. V V Dodonov, I A Malkin, and V I Manko, Physica 72 (1974) 597.
8. R Zeng , M A Ahmad, and S T Liu, Opt. Commun. 271 (2007) 162.
9. M A Ahmad, S H Bukhari, S N Khan, R Zeng, and Q Liao, and S Liu, Journal of Modern Optics 58, 10 (2011) 890.
10. A Mann, B C Sanders, and W J Murnu, Physical Review A 51, (1995) 2.
11. W K Wootters, “Quantum Information and Computation”, Rinton Press (2001) 27.
12. B Zhang and D Gao, J. At. Mol. Sci. 2, 2 (2011) 155.