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Recent BABAR results on two-photon processes are presented. A high statistics study of the twophoton production of the charmonium states hc and hc(2S) is performed.
Enhanced Two-Photon Absorption in a Hollow-Core Photonic Bandgap Fiber
Enhanced Two-Photon Absorption Hollow-Core Photonic Bandgap Fiber
2010/11/12
We show that two-photon absorption (TPA) in Rubidium atoms can be greatly enhanced by the use of a hollow-core photonic bandgap fiber. We investigate off-resonant, degenerate Doppler-free TPA on the ...
Measurement of the two-photon absorption cross-section of liquid argon with a time projection chamber
Measurement two-photon absorption cross-section of liquid argon with a time projection chamber
2011/1/6
This paper reports on laser induced multiphoton ionization at 266 nm of liquid Argon in a Time Projection Chamber (LAr TPC) detector. The electron signal produced by the laser beam is a formidable too...
Interference and complementarity for two-photon hybrid entangled states
Interference complementarity two-photon hybrid entangled states
2010/10/20
In this work we generate two-photon hybrid entangled states (HES), where the polarization of one photon is entangled with the transverse spatial degree of freedom of the second photon. The photon pair...
Correlated two-photon transport in a one-dimensional waveguide side-coupled to a nonlinear cavity
Correlated two-photon transport one-dimensional side-coupled nonlinear cavity
2010/10/20
We investigate the transport properties of two photons inside a one-dimensional waveguide sidecoupled to a single-mode nonlinear cavity. The cavity is filled with a nonlinear Kerr medium.Based on the ...
Changes in the statistical and quantum features of the cavity radiation of a two-photon coherent beat laser due to phase fluctuation
Changes statistical quantum features cavity radiation two-photon coherent phase fluctuation
2010/10/19
Detailed derivation of the master equation and the corresponding time evolution of the cavity
radiation of a coherent beat laser when the atoms are initially prepared in a partial coherent super-posi...
Two-photon exchange to proton electromagnetic properties in time-like region
two-photon exchange nucleon delta form factor
2009/11/24
The contributions of two-photon exchange in the process e++e－ →p+p including N and Δ intermediate states are estimated in a simple hadronic model. The corrections to the unpolarized cross section as w...
Study of ππ production in two-photon collisions at Belle
two-photon collisions pion cross section resonances charmonia
2009/8/14
We have measured the cross section for π+π－ production in two-photon collisions using a data sample with an integrated luminosity of 85.9fb－1 collected with the Belle detector. The f0(980) resonance i...
Photon-added one-photon and two-photon nonlinear coherent states
Photon one-photon two-photon nonlinear coherent states
2010/10/13
From the photon-added one-photon nonlinear coherent states a†m| , fi, we introduce a new type of nonlinear coherent states with negative values of m.The nonlinear coherent states corresponding t...
Two-Photon Absorption in Size-Quantized Semiconductors with Degenerated Valence Band
Two-Photon Absorption Size-Quantized Semiconductors Degenerated Valence Band
2010/4/15
Two photon absorption in size-quantized films of semiconductors with degenerated band structures are investigated. The carrier energy spectrum and wavefunctions in the bands are calculated using two-b...