

characteristics of the temporal behavior of entanglement between photonic binomial distributions and a twolevel atom in a damping cavity



نویسنده

yadollahi fatemeh ,safaiee rosa ,golshan mohammad mehdi

منبع

international journal of optics and photonics  2019  دوره : 13  شماره : 1  صفحه:43 51



چکیده

in the present study, temporal behavior of entanglement between photonic binomial distributions and a twolevel atom in a leaky cavity, in equilibrium with the environment at a temperature t, is studied. in this regard, the master equation is solved in the secular approximation for the density matrix, when the initial photonic distribution is binomial, while the atomic states obey the boltzmann distribution. the atomphoton density matrix so calculated is then used to compute the negativity, as a measure of entanglement. the behavior of atomphoton entanglement is, consequently, determined as a function of time and temperature. to justify the behavior of atomphoton entanglement, moreover, we employ the total density matrix to compute and analyze the time evolution of the initial photonic binomial probability distribution. our results, along with representative figures reveal that the atomphoton degree of entanglement exhibits oscillations while decaying with time and asymptotically vanishes. it is further demonstrated that an increase in the temperature gives rise to a decrease in the entanglement. the finer characteristics of the temporal behavior of the corresponding probability distribution and, consequently, the atomphoton entanglement is also given and discussed.

کلیدواژه

atomphoton entanglement ,cavity damping ,master equation ,photonic binomial distribution

آدرس

shiraz university, physics department, iran, shiraz university, faculty of advanced technologies, iran, shiraz university, physics department, iran

پست الکترونیکی

golshan@susc.ac.ir










