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A multi-photon entanglement light source

A multi-photon, entangled light technology, applied in optics, optical components, structures/shapes of optical resonators, etc., can solve problems such as loss of quantum information, errors in quantum logic operations, loss of qubits, etc., to improve the signal-to-noise of quantum detection ratio, the effect of solving the quantum decoherence problem

Active Publication Date: 2020-10-30
匡一中 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] On the other hand, in various fields of quantum information technology, the problem of quantum information loss caused by quantum decoherence is faced, especially in the fields of quantum computing, quantum communication, quantum long-distance target detection and imaging, where entangled photons must be in complex Quantum decoherence is still a serious problem to be solved when transmitting in the external environment (background); at the same time, for quantum computing, quantum decoherence will also lead to loss of qubits and errors in quantum logic operations

Method used

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  • A multi-photon entanglement light source
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  • A multi-photon entanglement light source

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Embodiment 1

[0049] see figure 1 , is a schematic structural diagram of a multi-photon entangled light source provided in this embodiment. The multi-photon entangled light source is used to output macro-scale multi-photon multi-dimensional entangled light, including a single-mode laser 100 and an adjustment component 200, wherein,

[0050] The single-mode laser 100 is used to bidirectionally output two beams of laser light; wherein, the two beams of laser light are generated by stimulated emission, and the two beams of laser light are in a multi-photon entangled state satisfying the law of parity conservation;

[0051] The adjustment component 200 is arranged on the optical path 300 of the two laser beams, and is used to adjust the laser beam volume of the two laser beams to be smaller than the coherent volume of the single-mode laser 100, and adjust the laser beam area of ​​the two laser beams to be smaller than the single-mode laser 100 The coherent area of ​​, output macroscale multi-ph...

Embodiment 2

[0070] see figure 2 , is a schematic structural diagram of a multi-photon entanglement light source provided in this embodiment. in, figure 2 The multiphoton entangled light source shown is composed of figure 1 The multiphoton entanglement source optimization shown is obtained.

[0071] see figure 2 , the single-mode laser 100 has an axisymmetric structure, and is used to coaxially and bidirectionally output two laser beams with the same power.

[0072] In this embodiment, the bidirectional output laser light of the single-mode laser 100 has the same power, and the adjustment and control of photons in the single-mode laser 100 are not limited in this embodiment. It can be understood that the output laser light only needs to have the same power.

[0073] As an optional implementation, the resonant cavity of the single-mode laser 100 adopts a parallel planar standing wave cavity 110 , which is used to generate two laser beams in a multiphoton coherently superimposed enta...

Embodiment 3

[0127] see image 3 , is a schematic structural diagram of a multi-photon entanglement light source provided in this embodiment. in, image 3 The multiphoton entangled light source shown is composed of figure 2 The multiphoton entanglement source optimization shown is obtained.

[0128] see image 3 , the adjustment assembly 200 includes a first optical assembly 210 and a second optical assembly 220 arranged on the optical path 300 of the two laser beams, the first optical assembly 210 and the second optical assembly 220 have the same optical elements and the optical elements are axisymmetrically arranged .

[0129] In this embodiment, the first optical component 210 and the second optical component 220 are mirror-symmetrically arranged on the basis of the central section of the single-mode laser 100 .

[0130] As an optional implementation manner, the first optical assembly 210 includes a first lens 211 , a second lens 212 , an aperture stop 213 , and an interference fi...

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Abstract

The invention provides a multi-photon entanglement light source, and aims at outputting macro-scale multi-photon multi-difficulty entanglement light. The multi-photon entanglement light source comprises a single-mode laser and an adjustment assembly, wherein the single-mode laser is used for bidirectionally outputting two beams of laser; and the adjustment assembly is arranged on a light path of the two beams of laser and is used for adjusting laser beam volumes of the two beams of laser to be smaller than a coherent volume of the single-mode laser, and adjusting laser beam areas of the two beams of laser to be smaller than a coherent area of the single-mode laser so as to output macro-scale multi-photon multi-difficulty entanglement light. Visibly, the multi-photon entanglement light source is capable of generating multi-photon multi-difficulty entanglement light, so as to satisfy the requirement of multi-photon entanglement, thereby improving the signal to noise ratio of quantum detection and solving the quantum de-coherence problems in multiple fields of quantum information technologies such as quantum calculation and the like.

Description

technical field [0001] The invention relates to the field of optical equipment, in particular to a multi-photon entanglement light source. Background technique [0002] With the continuous development of quantum information technology, judging from the existing multi-photon entanglement light generation technology, the number of entangled photons can reach 10-20, which is enough to meet the needs of current experiments and other situations. However, in practice, it has been found that in applications such as quantum computing, long-distance target quantum detection, and quantum imaging, the existing multi-photon entanglement light generation technology cannot achieve the desired effect, so more photon entanglement is still needed to achieve meet higher demands. [0003] In order to meet the above-mentioned higher requirements, quantum computing needs to entangle many qubits. Among them, the quantum detection and quantum imaging of long-distance targets based on quantum enta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00H01S3/08
CPCG02B27/00H01S3/08
Inventor 匡一中匡宇
Owner 匡一中
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