arXiv subjects

Jinhua Zou

Publications and source records attributed to Jinhua Zou.

3 recordsLinked to original sources

arXiv2013

Amplitude and phase control of gain without inversion in a four-level atomic system using loop-transitio

Amplitude and phase control of gain without inversion is investigated in a four level loop-structure atomic system. Two features are presented. One is that gain without inversion can be obtained through the amplitude control of the applied fields. The other is that gain without inversion show a phase-dependence on the relative phase between the fields applied on the two two-photon transitions. Gain and phase-dependence originate from interference induced by such a loop-transition structure.

physics.optics↗

arXiv2013

Entanglement of three cavity fields via resonant interactions with dressed three-level atoms

In this paper we show that three cavity fields can be entangled when they are tuned on resonance with an ensemble of dressed three-level atoms. The master equation for the three cavity modes is derived by using atomic dressed states and the inseparability of the three output cavity modes is described by using a sufficient criterion proposed by van Loock and Furusawa. The physical cause is the atomic coherence effects, by which the quantum correlations are created in the field dynamics.

quant-ph↗

arXiv2012

Generation of two-mode entanglement via atomic coherence created by non-resonant dressed-state transitions

Two-mode squeezing and entanglement is obtained in a atom-cavity system cosisting a three-level atom and a two-mode cavity with driving laser fields. Here non-resonatn dressed-state transitions between the cavity modes and atom are used to get the effective Hamiltonian.

quant-ph↗