Device and method for generating multi-frequency-point two-component entangled light field through continuous wave laser
A multi-frequency, entangled light technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of small channel capacity, difficult to generate quantum information network, quantum communication and small number of quantum information channels, etc.
Active Publication Date: 2016-01-20
太原市和信无双科技有限责任公司
View PDF6 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The entanglement of a single frequency point will result in a small number of quantum communication and quantum information channels, and the channel capacity is small
Multicolor and multicomponent entanglement will be limited by low-loss optical fibers in practical long-distance transmission, and its quantity is difficult to produce practical quantum information networks
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0050] Both the second-order nonlinear crystal 2 and the output coupling lens 3 are installed on a finely controlled translation stage. In this way, it is convenient to adjust the movement of the two, so as to realize the output of light fields of multiple frequency points.
[0051] The length of the optical cavity is 3cm-6cm, that is, the cavity length can be realized by moving the electronically controlled output coupling lens 3, and the range is 0-30mm. The length of the second-order nonlinear crystal in the cavity is 2±0.2cm. Move 1.5cm, and its position should match output coupling lens 3.
[0052] The number of entanglement frequency points of the two-component entangled light field generated after the continuous wave laser passes through the "multi-frequency entanglement generator" depends on the phase matching bandwidth of the crystal and the free spectral region of the multi-frequency entanglement generator. The effect is to increase the non-linear process while caus...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The quantum entangled state light field is an important resource for quantum precision measurement and quantum information research, is widely used in many fields of quantum information, and is of important value in the aspects of quantum key distribution, quantum communication network, quantum cryptography communication, quantum teleportation, quantum computing and the like. Currently, experimental schemes for generating the entangled state light field are mostly at a single frequency, or are the study of multi-component multi-color entanglement, and relate to the multi-optical-frequency entangled light field. The invention provides a device and method for generating the multi-frequency-point two-component entangled light field through continuous wave laser. Apart from being capable of generating entanglement at a zero frequency, the two-component entanglement can also have many frequency points simultaneously for quantum entanglement properties at a high frequency, and in this way, the maximally entangled state can be obtained. The device and method for generating the multi-frequency-point two-component entangled light field through continuous wave laser have the advantages of unique quantum property multi-channel, high efficiency, high channel capacity and the like, and will be one of the most important 'resources' in the field of quantum information.
Description
technical field [0001] The invention relates to the field of compressed state and entangled state of light field, in particular to a device and method for generating multi-frequency point two-component entangled light field with continuous wave laser. Background technique [0002] Quantum entangled state light field is an important resource for quantum precision measurement and quantum information research, and has a wide range of applications in many quantum information fields, such as quantum key distribution, preparation of continuous variable multi-component entangled state light field, quantum communication network , Quantum cryptography communication, quantum teleportation and quantum computing have very important value. At present, most of the experimental schemes for generating entangled light fields are at a single frequency range, that is, the entanglement within the cavity bandwidth is only centered on the optical frequency, or the multi-component and multi-color ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G02F1/35
CPCG02F1/3501G02F1/3503
Inventor 杨荣国王晶静张静
Owner 太原市和信无双科技有限责任公司