Currently, Master's student in Mathematical physics and I am doing research about QUANTUM CRyptography.

Please can someone show me how to draw the phase diagrams for this function here? enter image description here

How can I draw a plot like this one? enter image description here

I'd appreciate some help. Thanks.


closed as unclear what you're asking by yohbs, Jens, m_goldberg, MarcoB, Yves Klett Apr 29 '17 at 6:20

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  • $\begingroup$ I don't know how to write the function in this site ! $\endgroup$ – Nabil Khossossi Apr 28 '17 at 19:07
  • $\begingroup$ i tried but it doesn't work $\endgroup$ – Nabil Khossossi Apr 28 '17 at 19:11
  • $\begingroup$ @NabilKhossossi Can you share a link to the source of the graph? $\endgroup$ – zhk Apr 28 '17 at 19:37
  • $\begingroup$ sci-hub.cc/10.1142/S0217979209053631 page 6 ! $\endgroup$ – Nabil Khossossi Apr 28 '17 at 19:41
  • $\begingroup$ You would use ContourPlot. $\endgroup$ – Jens Apr 28 '17 at 21:25