Photon-number entangled states generated in Kerr media with optical parametric pumping

@article{KowalewskaKudlaszyk2011PhotonnumberES,
  title={Photon-number entangled states generated in Kerr media with optical parametric pumping},
  author={Anna Kowalewska-Kudlaszyk and Wieslaw Leo'nski and Jan Pevrina},
  journal={Physical Review A},
  year={2011},
  volume={83},
  pages={052326}
}
Two nonlinear Kerr oscillators mutually coupled by parametric pumping are studied as a source of states entangled in photon numbers. Temporal evolution of entanglement quantified by negativity shows the effects of sudden death and birth of entanglement. Entanglement is preserved even in asymptotic states under certain conditions. The role of reservoirs at finite temperature in entanglement evolution is elucidated. Relation between generation of entangled states and violation of Cauchy-Schwartz… 
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References

SHOWING 1-10 OF 89 REFERENCES
Sudden death and birth of entanglement effects for Kerr-nonlinear coupler
We analyze the entanglement dynamics in a nonlinear Kerr-like coupler interacting with external environment. Whenever the reservoir is in a thermal vacuum state, the entanglement (measured by…
Two-mode optical state truncation and generation of maximally entangled states in pumped nonlinear couplers
Schemes for optical-state truncation of two cavity modes are analysed. The systems, referred to as the nonlinear quantum scissors devices, comprise two coupled nonlinear oscillators (Kerr nonlinear…
Entanglement in optical parametric down-conversion with losses and noise
Bright entanglement in the intracavity nonlinear coupler
We show that the intracavity Kerr nonlinear coupler is a potential source of bright continuous variable entangled light beams which are tunable and spatially separated. We use a linearized…
Dark periods and revivals of entanglement in a two-qubit system
In a recent paper Yu and Eberly [Phys. Rev. Lett. 93, 140404 (2004)] have shown that two initially entangled and afterward not interacting qubits can become completely disentangled in a finite time.…
Disentanglement in a two-qubit system subjected to dissipation environments
We investigate the time evolution of entanglement of various entangled states of a two-qubit system exposed to either thermal or squeezed reservoirs. We show that, except for the vacuum reservoir,…
Optical-fiber source of polarization-entangled photons in the 1550 nm telecom band.
TLDR
A fiber-based source of polarization-entangled photons that is well suited for quantum communication applications in the 1550 nm band of standard fiber-optic telecommunications is presented and violations of the Clauser-Horne-Shimony-Holt form of Bell's inequality are demonstrated.
Squeezing in the Kerr nonlinear coupler via phase-space representation
Quantum-statistical properties of light propagating in a coupler with third order nonlinearity are investigated. The stochastic equations describing the dynamics of the system are derived in…
Finite-dimensional states and entanglement generation for a nonlinear coupler
We discuss a system comprising two nonlinear (Kerr-like) oscillators coupled mutually by a nonlinear interaction. The system is excited by an external coherent field that is resonant to the frequency…
Correlations in photon-numbers and integrated intensities in parametric processes involving three optical fields
AbstractTwo strongly-pumped parametric interactions are simultaneously realized in a single nonlinear crystal in order to generate three strongly correlated optical fields. By combining together the…
...
...