arXiv subjects

R. Juarez-Amaro

Publications and source records attributed to R. Juarez-Amaro.

3 recordsLinked to original sources

arXiv2016

Measuring quasiprobability distribution functions of the cavity field considering field and atomic decays

We study the possibility of reconstructing the quantum state of light in a cavity subject to dissipation. We pass atoms, also subject to decay, through the cavity and surprisingly show that both decays allow the measurement of $s$-parametrized quasiprobability distributions. In fact, if we consider only atomic decay, we show that the Wigner function may be reconstructed. Because these distributions contain whole information of the initial field state, it is possible to recover information after both atomic and field decays occur.

quant-ph↗

arXiv2016

Entropy for the quantized field in the atom-field interaction: Initial mixed field

We study the atom-field interaction when the field is in a mixture of coherent states. We show that in this case it is possible to calculate analytically the field entropy for times of the order of twice the collapse time. Such analytical results are done with the help of numerical analysis.

quant-ph↗

arXiv2002

Direct measurement of the Q-function in a lossy cavity

We show that the Q-function corresponding to an electromagnetic field in a lossy cavity can be directly measured by means of a simple scheme, therefore allowing the knowledge of the state of the field despite dissipation.

quant-ph↗