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Generating device for continuous variable polychrome entangled optical field

A technology for generating devices and entangled light, applied in optics, nonlinear optics, instruments, etc., can solve the problems of complex and large devices and high technical requirements for continuous variable multicolor entangled light fields, and achieve compact structure, good reliability and performance. stable effect

Inactive Publication Date: 2015-03-04
SHANXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no commercial device that produces a continuously variable multicolor entangled light field on the market. The main reason is that the device that produces a continuously variable multicolor entangled light field is complex and huge, and requires high technical requirements.

Method used

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  • Generating device for continuous variable polychrome entangled optical field
  • Generating device for continuous variable polychrome entangled optical field
  • Generating device for continuous variable polychrome entangled optical field

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1. Generating device of continuous variable three-color entangled light field

[0024] Such as figure 1 The device for generating a continuously variable three-color entangled light field includes a laser 1, a first non-degenerate optical parametric oscillator cavity 2, a second non-degenerate optical parametric oscillator cavity 3, and three sets of non-equal Mach-Zeng De interferometry system 4,5,6.

[0025] The wavelength generated by the laser 1 is λ 0 light field a 0 , as the pumping light field of the first non-degenerate optical parametric oscillator cavity 2 . The first non-degenerate optical parametric oscillator cavity 2 has a wavelength of λ 0 The pump light field a 0 Under the action, through the optical parameter down-conversion process, the wavelengths are respectively λ 1 and lambda 2 The signal light field a 1 and the idle light field a 2 , and they are separated by a two-color beamsplitter. where the wavelength is λ 1 The signal li...

Embodiment 2

[0035] Embodiment 2. Generating device of continuous variable four-color entangled light field

[0036] Such as figure 2 A continuous variable four-color entangled light field generation device shown includes a laser 1, a first non-degenerate optical parametric oscillator cavity 2, a second non-degenerate optical parametric oscillator cavity 3 and four sets of non-equal Mach-Zeng De interferometry system 4,5,6,7.

[0037] The difference from Embodiment 1 is that the first non-degenerate optical parametric oscillation cavity 2, for the wavelength λ 0 The transmittance of the light field is 27%, and the wavelength λ 1 and wavelength λ 2 A highly reflective flat mirror with a light field is used as the input coupling mirror. And, for wavelength λ 0 The high reflection of the light field, and the wavelength λ 1 and wavelength λ 2 A flat mirror with a light field transmittance of 3% is used as the output coupling mirror. The second non-degenerate optical parametric oscilla...

Embodiment 3

[0046] Embodiment 3. Generating device of continuous variable five-color entangled light field

[0047] Such as image 3 A continuous variable five-color entangled light field generator is shown, including a laser 1, a first non-degenerate optical parametric oscillator cavity 2, a second non-degenerate optical parametric oscillator cavity 3 and five sets of non-equal arm Mach-Zehnder Interferometric systems 4, 5, 6, 7, 8.

[0048] The difference from Embodiment 1 is that the first non-degenerate optical parametric oscillation cavity 2, for the wavelength λ 0 The transmittance of the light field is 25%, and the wavelength λ 1 and wavelength λ 2 A highly reflective flat mirror with a light field is used as the input coupling mirror. And, for wavelength λ 0 The high reflection of the light field, and the wavelength λ 1 and wavelength λ 2 A flat mirror with a light field transmittance of 3% is used as the output coupling mirror. The second non-degenerate optical parametric...

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Abstract

The invention provides a generating device for a continuous variable polychrome entangled optical field. The generating device for the continuous variable polychrome entangled optical field comprises a laser device, two non-degenerate optical parametric oscillation cavities and three to five unequal-arm Mach-Zehnder interference measuring systems. Due to the fact that the two cascading non-degenerate optical parametric oscillation cavities are utilized to generate the continuous variable polychrome entangled optical field, the generating device for the continuous variable polychrome entangled optical field has the advantages of being compact in structure, convenient to adjust, good in reliability and the like. The generated continuous variable polychrome entangled optical field can be applicable to both quantum memory and quantum communication and has important application values in quantum information networks.

Description

technical field [0001] The invention relates to a nonclassical light field generation device, in particular to a continuous variable multicolor entanglement light field generation device that can be applied to a quantum information network. Background technique [0002] Quantum entanglement is one of the most important essences of quantum mechanics, and it is considered as an important resource of quantum information and quantum computing. Two-color entangled light fields have been prepared experimentally and applied to various quantum information protocols. Controlled quantum communication protocols, such as controlled quantum dense coding, quantum out-of-body state transfer network, and quantum secret sharing, etc., need to be realized by using multi-component entangled light fields. The research on the quantum information network composed of atoms and light fields is the key to the development and application. Among them, atoms are used as nodes for quantum information ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/35
Inventor 闫智辉贾晓军苏晓龙谢常德彭堃墀
Owner SHANXI UNIV
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