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Paper detail

Entanglement assisted spin-wave atom interferometer

We report the observation of phase-super resolution in a motion-sensitive spin-wave (SW) atom interferometer utilizing a NOON-type entanged state. The SW interferometer is implemented by generating a superposition of two SWs and observing the interference between them, where the interference fringe is sensitive to the atomic collective motion. By heralded generation of a second order NOON state in the SW interferometer, we clearly observe the interference pattern with phase super-resolution. The demonstrated SW interferometer can in principle be scaled up to highly entangled quantum state, and thus is of fundamental importance to implement quantum-enhanced-measurement.

preprint2009arXivOpen access
Yu-Ao ChenXiao-Hui BaoZhen-Sheng YuanShuai ChenBo ZhaoJian-Wei Pan
quant-ph
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Yu-Ao ChenXiao-Hui BaoZhen-Sheng YuanShuai ChenBo ZhaoJian-Wei Pan

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