Von Neumann Entropy-Preserving Quantum Operations

Details Von Neumann Entropy-Preserving Quantum Operations Von Neumann Entropy-Preserving Quantum Operations

2011-04-15

arxiv.org/abs/1104.2992v4

Physics Letters A 375(47) : 4163-4165(2011)

Physics

Quantum Physics

7 pages, LaTeX, to appear Phys. Lett. A

Scientific paper

10.1016/j.physleta.2011.10.008

For a given quantum state $\rho$ and two quantum operations $\Phi$ and $\Psi$, the information encoded in the quantum state $\rho$ is quantified by its von Neumann entropy $\S(\rho)$. By the famous Choi-Jamio{\l}kowski isomorphism, the quantum operation $\Phi$ can be transformed into a bipartite state, the von Neumann entropy $\S^{\mathrm{map}}(\Phi)$ of the bipartite state describes the decoherence induced by $\Phi$. In this Letter, we characterize not only the pairs $(\Phi, \rho)$ which satisfy $\S(\Phi(\rho))=\S(\rho)$, but also the pairs $(\Phi, \Psi)$ which satisfy $\S^{\mathrm{map}}(\Phi\circ\Psi) = \S^{\mathrm{map}}(\Psi)$.

Affiliated with

Also associated with

No associations

Rating

Von Neumann Entropy-Preserving Quantum Operations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Von Neumann Entropy-Preserving Quantum Operations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Von Neumann Entropy-Preserving Quantum Operations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-8515