[ALPS-users] Question on "MEASURE_LOCAL_AT" in MPS codes

[Michele Dolfi]

We apply Op1 first, so it is the second expression that you proposed.


Best,
Michele


> On 28 Mar 2017, at 17:09, Desmond <desmond2046 at gmail.com> wrote:
> 
> Dear all,
> 
> I'm asking about the custom measurement "MEASURE_LOCAL_AT" in the MPS codes.
> 
> For simplicity, let's consider one measurement on the ground state. From the documentation, the Syntax reads
> 
> Op1:Op2:Op3 | (i1, i2, i3)
> 
> My question is: what is the order of operation? Do we operate Op1 to the ground state first or do we operate Op3 to the ground state first?
> In another word, does it correspond to <gs|Op1 Op2 Op3|gs> or <gs|Op3 Op2 Op1|gs>?
> 
> Thanks!
> Desmond
> 
> 
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