Partial trace implementation?

[dnadlinger]

It seems to me like partial traces would be something required for many uses of JuliaQuantum, yet I couldn't find an implementation in QuBase.

Hacking something together really quick is not hard, but does anybody have a piece of code lying around that computes it the JuliaQuantum way?

[amitjamadagni]

@klickverbot I guess QuDOS.jl has ptrace implemented here, so I guess a work around should be possible to include it in QuBase.

[acroy]

Partial trace (and transpose) is certainly on our wish list (see also issue
#7). As Amit said there is an implementation in QuDOS, but I didn't want to
port it over for license reasons. PRs are most welcome ;-)
On So., 18. Okt. 2015 at 14:03, Amit [email protected] wrote:

@klickverbot https://github.com/klickverbot I guess QuDOS.jl has ptrace
implemented here
https://github.com/acroy/QuDOS.jl/blob/master/src/Qudos.jl, so I guess
a work around should be possible to include it in QuBase.

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#45 (comment)
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[quantshah]

In QuDirac, isn't partial trace implemented as ptrace ?
Its there in the examples too ptrace(bell * bell', 1)

https://github.com/JuliaQuantum/QuDirac.jl/blob/master/src/opsum.jl#L342