Title:
METHOD FOR CONTROLLING SPECTRAL PROPERTIES OF QUANTUM-CORRELATED PHOTON PAIR USING QUANTUM INTERFERENCE
Document Type and Number:
WIPO Patent Application WO/2018/196478
Kind Code:
A1
Abstract:
A method for controlling the spectral properties of a quantum-correlated photon pair using quantum interference, comprising the following steps: using a multi-stage cascade structure consisting of a segment of nonlinear medium, a segment of dispersive medium, …, and a segment of nonlinear medium in sequence, or using a two-stage cascade structure consisting of a segment of nonlinear medium, a segment of dispersion-controllable medium, and a segment of nonlinear medium in sequence; the nonlinear media and the dispersive media in the multi-stage cascade structure are arranged sequentially and alternately, each segment of nonlinear medium is regarded as one stage, and the number of the stages of the multi-stage cascade structure is greater than or equal to two; an optical wave can be incident from one of the multi-stage cascade structure or the two-stage cascade structure, and exit from the other end to form an optical wave path; a pulsed laser is used for pumping the multi-stage cascade structure or the two-stage cascade structure, and a quantum-correlated photon pair is generated by a cascaded parametric process in the cascade structure; due to a quantum interference effect in the cascaded parametric process, the intensity of the quantum-correlated photon pair causes periodic constructive and destructive interference at different wavelengths; for the multi-stage cascade structure, the wavelength corresponding to the constructive and destructive interference can be tuned by changing the number of the stages of the multi-stage cascade structure, the length of the dispersive media, or substituting dispersive media having different dispersion properties; for the two-stage cascade structure, the wavelength corresponding to the constructive and destructive interference can be tuned by changing the dispersion properties and length of the dispersion-controllable medium; a filtering and collecting device is used for collecting and outputting the quantum-correlated photon pair at the wavelength corresponding to the constructive interference.
Inventors:
LI XIAOYING (CN)
CUI LIANG (CN)
SU JIE (CN)
LI JIAMIN (CN)
CUI LIANG (CN)
SU JIE (CN)
LI JIAMIN (CN)
Application Number:
PCT/CN2018/077374
Publication Date:
November 01, 2018
Filing Date:
February 27, 2018
Export Citation:
Assignee:
UNIV TIANJIN (CN)
International Classes:
G02F1/35; G02F1/365
Foreign References:
| CN105511199A | 2016-04-20 | |||
| CN106990641A | 2017-07-28 | |||
| CN103901700A | 2014-07-02 | |||
| CN1888968A | 2007-01-03 | |||
| CN103091933A | 2013-05-08 | |||
| CN106289049A | 2017-01-04 | |||
| CN105867046A | 2016-08-17 | |||
| JP2013109088A | 2013-06-06 |
Attorney, Agent or Firm:
BEI & OCEAN (CN)
Download PDF:
Previous Patent: PRODUCT CLEANING DEVICE FOR VEHICLE MOULD PRODUCTION
Next Patent: PNEUMATIC CONVEYING FEEDER AND TRANSFER PIPE CONNECTING STRUCTURE
Next Patent: PNEUMATIC CONVEYING FEEDER AND TRANSFER PIPE CONNECTING STRUCTURE