Generalized entanglement measure for continuous-variable systems

@article{Swain2017GeneralizedEM,
  title={Generalized entanglement measure for continuous-variable systems},
  author={S Nibedita Swain and Vineeth S. Bhaskara and Prasanta K. Panigrahi},
  journal={Physical Review A},
  year={2017}
}
Concurrence introduced by Hill and Wootters [Phys. Rev. Lett. 78 , 5022 (1997)], provides an important measure of entanglement for a general pair of qubits that is strictly positive for entangled states and vanishes for all separable states. We present an extension of entanglement measure to general pure continuous variable states of multiple degrees of freedom by generalizing the Lagrange’s identity and wedge product framework proposed by Bhaskara and Panigrahi [Quantum Inf. Process. 16 , 118… 

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