Atom–photon entanglement beyond the multi-photon resonance condition

  title={Atom–photon entanglement beyond the multi-photon resonance condition},
  author={Zeinab Kordi and Saeed Ghanbari and Mohammad Mahmoudi},
  journal={Quantum Information Processing},
Atom–photon entanglement between the dressed atom and its spontaneous emission is studied in a near-degenerate three-level V-type atomic system in multi-photon resonance condition and beyond it. Taking into account the quantum interference due to the spontaneous emission, the density matrix equations of motion are numerically calculated in two-photon resonance condition and beyond it. The dynamical behavior of these two subsystems is investigated by using the von Neumann entropy. We apply the… 

Atom- Photon Entanglement in Double- Lambda Quantum System by using femtosecond Gaussian pulses

The dynamical behavior of entanglement between the atomic ensemble and the spontaneous emission is investigated by applying the femtosecond Gaussian pulses in double- lambda quantum system. In fact

Entanglement Dynamics in a Model Tripartite Quantum System

A Λ-type atom interacting with two radiation fields exhibits electromagnetically induced transparency and other nonclassical effects that appear in the entanglement dynamics of the atomic subsystem

Controllable atom-photon entanglement via quantum interference near plasmonic nanostructure

A five-level atomic system is proposed in vicinity of a two-dimensional (2D) plasmonic nanostructure with application in atom-photon entanglement. The behavior of the atom-photon entanglement is

The effect of classical driving field on the spectrum of a qubit and entanglement swapping inside dissipative cavities

It is demonstrated that the classical driving field has a beneficial effect on the prolonging of the swapped entanglement.

Encryption, decryption, and control with fractional quantum bits, quantum chiral states and pyramidal quantum bits switching in graphene

A novel method for encryption, decryption, and control of data using the theory of “rings and fields” is proposed. A system comprising a ring or loop with a maximum of six vector tuples or sub-loops,



Maximal atom–photon entanglement in a double-$$\Lambda $$Λ quantum system

It is demonstrated that for the special case of Rabi frequency of the applied fields, the atom–photon entanglement of a dressed atom and its spontaneous emission in a double closed-loop atomic system is maximally entangled.

Phase-Controlled Atom-Photon Entanglement in a Three-Level V-Type Atomic System via Spontaneously Generated Coherence

It is demonstrated that in the presence of quantum interference induced by spontaneous emission, the reduced entropy and the atom-photon entanglement are phase-dependent.

The effect of a coupling field on the entanglement dynamics of a three-level atom

The effect of a coupling laser field on the entanglement of a three-level quantum system and its spontaneous emission is investigated via the reduced quantum entropy. We consider two schemes: the

Phase-controlled atom—photon entanglement in a three-level Λ—type closed-loop atomic system

We study the entanglement of dressed atom and its spontaneous emission in a three-level Λ-type closed-loop atomic system in a multi-photon resonance condition and beyond it. It is shown that the von

Entanglement between light and an optical atomic excitation

The generation of hyperfine ground states of single atoms or atomic ensembles entangled with spontaneously emitted light paving the way for functional, many-node quantum networks capable of deterministic quantum logic operations between long-lived atomic memories.

Effect of quantum interference on the optical properties of a three-level V-type atomic system beyond the two-photon resonance condition

The effect of quantum interference on the optical properties of a pumped-probe three-level V-type atomic system is investigated. The probe absorption, dispersion, group index and optical bistability

Entanglement created by spontaneously generated coherence

We propose a scheme that is able to generate on demand a steady-state entanglement between two nondegenerate cavity modes. The scheme relies on the interaction of the cavity modes with driven two- or