Squeezing and entanglement in a Bose–Einstein condensate

@article{Estve2008SqueezingAE,
  title={Squeezing and entanglement in a Bose–Einstein condensate},
  author={J{\'e}r{\^o}me Est{\`e}ve and Christian Gross and Alex Weller and Stefano Giovanazzi and Markus K Oberthaler},
  journal={Nature},
  year={2008},
  volume={455},
  pages={1216-1219}
}
Entanglement, a key feature of quantum mechanics, is a resource that allows the improvement of precision measurements beyond the conventional bound attainable by classical means. This results in the standard quantum limit, which is reached in today’s best available sensors of various quantities such as time and position. Many of these sensors are interferometers in which the standard quantum limit can be overcome by using quantum-entangled states (in particular spin squeezed states) at the two… CONTINUE READING
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