Entangled state photon storage device, entangled state detection device and method
An entangled state and photon technology, applied in static memory, measuring device, information storage, etc., can solve the problem that the initial state cannot be measured in advance
Active Publication Date: 2020-06-05
谭梓昂
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The entanglement information between entangled photons is used in target detection, but since its initial state cannot be measured in advance, the target information cannot be obtained by directly measuring the state of the local entangled particles, that is, the state of the entangled particles used to detect the target cannot be determined by directly measuring the changes in the state of locally entangled particles
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[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0023] The entangled state photon storage device of the present invention includes a rectangular ring-shaped optical fiber, and a section of the rectangular ring-shaped optical fiber protrudes out of the ring as a photon input end, and the photon input end is located at a right angle of the rectangular ring-shaped optical fiber. After the photon is incident on the ring from the photon input end at a critical angle, it circulates in the ring in the way of total reflection, realizing the storage of entangled photons.
[0024] The structure of the entangled state detection device for entangled photons of the present invention is based on the above-mentioned entangled photon storage device, such as figure 1 As shown, it includes an inner layer of optical fiber and an outer layer of optical fiber. The outer layer of optical fiber is wrappe...
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The invention relates to an entangled state photon storage apparatus, and an entangled state detection apparatus and method. The storage apparatus comprises an annular optical fiber; a section of theannular optical fiber extends from an annulus to serve as a photon input end; and photons come into an inner layer optical fiber at a critical angle from the photon input end and then do a cyclic motion in the inner layer optical fiber in a total reflection manner, so that the storage of the entangled state photons is realized. The local photons in an entangled state two-photon signal come into the inner layer optical fiber from the photon input end at the critical angle and do the cyclic motion in the inner layer optical fiber in the total reflection manner; the detection photons in the entangled state two-photon signal are changed in state when meeting a target, so that the states of the local photons are changed; due to the change of the motion states of the local photons, the local photons overflow from a memory optical fiber to an outer layer optical fiber; and finally the local photos are output from a photon output end and detected by a single-photon detector, so that the targetis determined.
Description
technical field [0001] The invention relates to the detection of entangled photons, in particular to a storage device for entangled photons, an entangled state detection device and a method. Background technique [0002] At present, in the detection of entangled photons, how not to destroy the entanglement state information of entangled photons and at the same time to detect them conveniently is the biggest obstacle for the application of entangled photons in the field of quantum information technology. The entanglement information between entangled photons is used in target detection, but since its initial state cannot be measured in advance, the target information cannot be obtained by directly measuring the state of the local entangled particles, that is, the state of the entangled particles used to detect the target The change of , cannot be determined by directly measuring the change of the state of the locally entangled particles. Contents of the invention [0003] ...
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IPC IPC(8): G11C13/04G01J11/00G01S17/02
CPCG01J11/00G01S17/02G11C13/04
Inventor 谭宏
Owner 谭梓昂