Multi-component entangled state light field generation device and method
A technology for generating devices and entangled states, applied in the field of quantum optics, can solve the problems of small scale and inability to expand, and achieve the effect of rich structure
Pending Publication Date: 2022-04-29
SHANXI UNIV
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Several proposals have been made to use different systems to generate cluster states with two-dimensional or more dimensional structures, but the scale is too small to be scalable
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[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than All the embodiments; based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the present invention.
[0018] Such as figure 1 As shown, the embodiment of the present invention provides a multi-component entangled state light field generating device, including a first cavity mirror 1, a NOPA crystal 2, a second cavity mirror 3, a fixing device 4 and a spring 5 arranged in sequence on the optical path Composing a mechanical oscillator, the first cavity mirror 1, the NOPA crystal 2, and the second cavity mirr...
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The invention belongs to the technical field of quantum optics, and particularly relates to a multi-component entangled state light field generation device and method.The device comprises a first cavity mirror, an NOPA crystal, a second cavity mirror, a fixed mirror and a spring which are sequentially arranged on a light path, and the first cavity mirror, the NOPA crystal and the second cavity mirror form a non-degenerate optical parametric amplifier; the first cavity mirror, the NOPA crystal and the fixed mirror are fixedly arranged relative to pump light, and the second cavity mirror is connected with the fixed mirror through a spring; and the pump light enters from the outer side of the first cavity mirror. According to the invention, the NOPA is arranged in an optical mechanical system to realize the generation of a large-scale clutter state, and the cluster state with a one-dimensional, two-dimensional and three-dimensional structure can be generated, and can be used as an entanglement structure of a frequency comb of an extensible quantum system, thereby laying a foundation for quantum calculation of quantum measurement.
Description
technical field [0001] The invention belongs to the technical field of quantum optics, and in particular relates to a device and method for generating a multi-component entangled state light field. Background technique [0002] Quantum entangled states Light field entanglement is an essential physical resource for quantum communication, quantum metrology, and measurement-based universal quantum computing. Recently, scientists are very interested in a special multi-component entangled state (called cluster state), because the cluster state is a prerequisite for building quantum information networks and quantum computing. Both universal quantum computing and multiplexed quantum information systems require the cluster state to be both large-scale and at least two-dimensional. There have been several proposals to generate cluster states with two or more dimensional structures using different systems, but they are too small to scale. NOPA (Nondegenerate Optical Parametric Ampli...
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Login to View More IPC IPC(8): G02F1/35G02F1/355G02F1/39
CPCG02F1/3503G02F1/3551G02F1/392
Inventor 杨荣国张超霞张静
Owner SHANXI UNIV