Quantum spiral bandwidth of entangled two-photon states

Details Quantum spiral bandwidth of entangled two-photon states Quantum spiral bandwidth of entangled two-photon states

2003-06-16

arxiv.org/abs/quant-ph/0306105v1

Physics

Quantum Physics

10 pages, 3 figures

Scientific paper

10.1103/PhysRevA.68.050301

We put forward the concept of quantum spiral bandwidth of the spatial mode function of the two-photon entangled state in spontaneous parametric downconversion. We obtain the bandwidth using the eigenstates of the orbital angular momentum of the biphoton states, and reveal its dependence with the length of the down converting crystal and waist of the pump beam. The connection between the quantum spiral bandwidth and the entropy of entanglement of the quantum state is discussed.

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