7
votes
Accepted
Does the symmetric logarithmic derivative operator have a geometric interpretation?
First, the classical correspondence, explaining why the SLD should be present. The Fisher information is the expectation value of the score, where the score is the logarithmic derivative of the ...
- 3,659
3
votes
Accepted
What is the connection between Bures metric and (finite) Bures distance?
The Bures metric is the limit of the Bures distance for two infinitesimally close density matrices $\rho$ and $\rho+d\rho$. The Bures distance however, is not unique. It depends on the space on ...
- 2,495
2
votes
Is there a straightforward way to calculate the quantum volume for simple systems?
I believe the calculation steps are quite complex to give a simple formula or even to follow it by hand.
Maybe this medium article and the cited paper gives you a better general understanding.
As you ...
- 478
1
vote
Does the symmetric logarithmic derivative operator have a geometric interpretation?
Although, the Bures metric, the Fisher tensor and the symmetric logarithmic derivative appear mainly in quantum estimation theory, and even though the original discovery by Helstrom was in this ...
- 2,495
1
vote
Is there a straightforward way to calculate the quantum volume for simple systems?
To put in simple words, the quantum volume tells a maximal dimension of state space (Hilbert space) you can simulate on a quantum computer sucessfully. For example, quantum volume 64 means that you ...
- 13.6k
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