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One inside physical system or one of the interaction karaso of the plural photons and the probe photon or the device or the method of detecting the plural photons
One inside physical system or one of the interaction karaso of the plural photons and the probe photon or the device or the method of detecting the plural photons
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机译:一个内部物理系统或多个光子与探针光子的相互作用karaso之一或检测多个光子的装置或方法
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摘要
A device capable of efficiently detecting a single-photon signal includes a matter system, sources of a first beam and a second beam, and a measurement system. The matter system has a first energy level and a second energy level such that a signal photon couples to a transition between the first energy level and the second energy level. The first beam contains photons that couple to a transition between the second energy level and a third energy level of the matter system, and the second beam contains photons that couple to a transition between the third energy level and a fourth energy level of the matter system. The measurement system measures a change in the first or second beam to detect the absence, the presence, or the number of the photons in the signal.
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