Manipulation of Non-classical Atomic Spin States

Details Manipulation of Non-classical Atomic Spin States Manipulation of Non-classical Atomic Spin States

2009-09-13

arxiv.org/abs/0909.2423v1

Physics

Quantum Physics

Scientific paper

We report successful manipulation of non-classical atomic spin states. We generate squeezed spin states by a spin quantum nondemolition measurement, and apply an off-resonant circularly-polarized light pulse to the atoms. By changing the pulse duration, we have clearly observed a rotation of anisotropic quantum noise distribution in good contrast with the case of manipulation of a coherent spin state where the quantum noise distribution is always isotropic. This is an important step for quantum state tomography, quantum swapping, and precision spectroscopic measurement.

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