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Questions tagged [resource-theories]

Any model of restricted quantum information processing built upon two main system-dependent requirements for the resources and allowed operations; (i) the existence of a set of states that are free and those not in the set are expensive; and (ii) the allowed operations are those that map the set of free states to itself.

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1 answer
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Twirling of quantum states: Maximally entangled states

I have been reading the paper "Resource theory of unextendibility and non-asymptotic quantum capacity" (https://arxiv.org/pdf/1803.10710.pdf) by Kaur et.al, I have two questions ...
Newuser7's user avatar
4 votes
1 answer
87 views

Why coherence measure monotonicity under selective incoherent operation should be form $C\left( \rho \right) \ge \sum_n{p_nC\left( \rho _n \right)}$?

In this paper, the authors give four postulates if a function $C$ can be taken as a coherence measure: (C1) $C(\rho) \geqslant 0$, and $C(\rho)=0$ if and only if $\rho \in \mathcal{I}$, where $\...
Sherlock's user avatar
  • 695
2 votes
0 answers
39 views

Is there a resource theory of irreversibility?

We know that we can quantify the degree of irreversibility of a quantum process using the entropy production rate of the same process. But sometimes it seems that the very fact that information has ...
R.W's user avatar
  • 2,337
1 vote
0 answers
415 views

What is the relation between fidelity and concurrence for a two qubit maximally mixed state?

I am trying to understand the relation between Fidelity and Concurrence for a two qubit maximally mixed state. When I calculate the Fidelity and Concurrence, I observe that Concurrence is zero whereas ...
Ganesh M's user avatar
  • 115
3 votes
0 answers
119 views

Why is the resource theory approach used in quantum information processing? [closed]

What are the advantages and applications of using the resource theory approach in QIP ? What specific problems can be solved using in particular this approach ?
C. Sophie's user avatar