Analysis of diffused planar and channel waveguides

In this paper, we propose an integrated optic waveguide device employing a modified Mach-Zehnder interferometer, capable of generating nondegenerate, hyperentangled photon pairs. The geometry enables multiple (eight) type-II phase-matched spontaneous parametric downconversion processes simultaneously, resulting in a biphoton state, which is simultaneously entangled in polarization and spatial modes. Using an electro-optic phase modulator, we show the possibility of altering modal entanglement without affecting polarization entanglement. Such switchable, maximally entangled photon pairs, entangled in multiple degrees of freedom, should be very useful in various on-chip quantum optics experiments and in the implementation of quantum information protocols employing higher dimensional entanglement.

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“…Titanium indiffusion produces graded-index waveguides and can be described by a refractive index variation of the form [31] …”

Section: Resultsmentioning

confidence: 99%

Switchable hyperentangled photon pairs from an integrated optic waveguide device

2013

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“…Similarly one can add and subtract ( ) y n y 2 from n 2 (x, y) and can write equation (4) in the following form…”

Section: Equivalent Planar Waveguides For Separable Modal Fieldsmentioning

confidence: 99%

“…In this section we summarize the variational analysis for the modal fields of planar graded index waveguide 4,5 . The scalar wave equation for a typical planar guiding structure is given as…”

Section: Modal Fields For the Planar Waveguidesmentioning

confidence: 99%

Synthesis of titanium indiffused LiNbO 3 waveguides with desired modal fields

Jain

Sharma

2010

Physics and Simulation of Optoelectronic Devices XVIII

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“…Generally speaking, variational method is a good tool to obtain analytical and approximate solutions of the modal fields. Owing to many advantages including simple derivation of formula and little time of computation, the variational technique had been widely employed to seek the waveguiding modes and their corresponding propagation constants [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Commonly-used Trial Functions in the Variational Analysis of Ti:LiNbO3 Channel Waveguides

Lee¹,

Lin²,

Chen³

et al. 1999

Journal of Optical Communications

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Two common trial functions used in the variational method to solve the waveguiding modes of Ti:LiNbO 3 channel waveguides are compared in this paper. The first one has four parameters and the other has just two. The respective modal-field profiles described by them, as well as the respective fiber-to-waveguide coupling efficiencies estimated by these models, are rather different. We propose a self-consistent concept to examine the qualities of the trial fields and then show that the two-parameter model is better.

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Analysis of diffused planar and channel waveguides

Cited by 16 publications

References 7 publications

Switchable hyperentangled photon pairs from an integrated optic waveguide device

Switchable hyperentangled photon pairs from an integrated optic waveguide device

Synthesis of titanium indiffused LiNbO 3 waveguides with desired modal fields

A Comparison of Commonly-used Trial Functions in the Variational Analysis of Ti:LiNbO3 Channel Waveguides

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