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Generating set of continuous-variable multi-component polarized entangled optical field

A multi-component, entangled light technology, applied in optics, nonlinear optics, instruments, etc.

Inactive Publication Date: 2015-06-10
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the wavelength of the light field in the above article is 1064nm, and there is no corresponding atomic absorption line. The practical quantum network requires that the wavelength of the multi-component polarization entangled light field matches the absorption line of atoms and other substances

Method used

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  • Generating set of continuous-variable multi-component polarized entangled optical field
  • Generating set of continuous-variable multi-component polarized entangled optical field
  • Generating set of continuous-variable multi-component polarized entangled optical field

Examples

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Effect test

Embodiment 1

[0026] Embodiment 1. A device for generating a continuous variable three-component GHZ-like polarization-entangled light field.

[0027] Such as figure 1 The device for generating a continuous variable three-component GHZ-like polarization-entangled light field includes a Ti:sapphire laser 1, a second harmonic generator 2, three optical parametric amplifiers 31, 32, 33, an interference system 4 and three Set of Stokes measuring systems 5.

[0028] The interferometric system 4, such as figure 2 As shown, an interference system consisting of a 1:1 optical beam splitter (BS), a 1:2 optical beam splitter (BS) and three polarizing beam splitters (PBS), the orthogonal amplitude compressed light field a 2 and the orthogonal phase light field a 3 Through the 1:2 optical beam splitter interference, and control their relative phase difference to 0, one beam of the interference light field passes through the 1:1 optical beam splitter and the orthogonal amplitude compression light fie...

Embodiment 2

[0038] Embodiment 2. Continuous variable four-component GHZ type or Cluster type polarization entangled light field generation device.

[0039] Such as Figure 4 A continuous variable four-component GHZ-like polarization-entangled optical field generation device is shown, including Ti:Sapphire laser 1, second harmonic generator 2, four optical parametric amplifiers, interference system 4 and four sets of Stokes Measurement system5.

[0040] The interferometric system 4, such as Figure 5 As shown, the interference system composed of three 1:1 optical beam splitters (BS) and four polarizing beam splitters (PBS), the orthogonal amplitude compressed light field a 2 and a 3 Through the 1:1 optical beam splitter interference, and control their relative phase difference to be Pi / 2, one beam of the interference light field passes through the 1:1 optical beam splitter and the orthogonal phase compression light field a 1 Interference, and control their relative phase difference to ...

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Abstract

The invention provides a generating set of a continuous-variable multi-component polarized entangled optical field. The generating set comprises a laser (1), a secondary harmonic generator (2), a plurality of optical parameter amplifiers, an interference system (4) and a plurality of Stokes measuring systems (5); the laser is a low-noise, tunable laser; each optical parameter amplifier comprises a specific nonlinear crystal and a cavity lens; the interference system is composed of a plurality of different optical splitters and a plurality of different polarization beam splitters. The generating set is suitable for generating spatially separated multi-beam continuous-variable polarized entangled optical field having the wavelength corresponding to an atomic absorption line at normal temperature and is also suitable for quantum storage, quantum relaying and quantum networks.

Description

technical field [0001] The invention relates to a nonclassical light field generating device, in particular to a continuous variable multi-component polarization entangled light field generating device. Background technique [0002] Quantum entanglement is an important content in quantum mechanics and an important resource for realizing quantum information, quantum computing and quantum metrology. Continuous variable quantum entanglement has attracted extensive attention of researchers due to its advantages of deterministic preparation and high measurement efficiency. With the development of quantum information, quantum networks have become a current research hotspot, which puts forward requirements for multi-component entangled light fields. Due to its fast propagation speed and weak interaction with the surrounding environment, light is an ideal carrier for quantum information transmission. Atoms can be used as network nodes for quantum information storage and processing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35G02F1/355
CPCG02F1/3544G02F1/392
Inventor 闫智辉贾晓军彭堃墀
Owner SHANXI UNIV
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