Optimal Entangling Capacity of Dynamical Processes

Details Optimal Entangling Capacity of Dynamical Processes Optimal Entangling Capacity of Dynamical Processes

2010-07-08

arxiv.org/abs/1007.1445v2

Phys. Rev. A 82, 042314 (2010)

Physics

Quantum Physics

Changed title since previous version. 8 pages main text + 4 pages of appendices. Rewritten with some mathematical details move

Scientific paper

10.1103/PhysRevA.82.042314

We investigate the entangling capacity of dynamical operations when provided with local ancilla. A comparison is made between the entangling capacity with and without the assistance of prior entanglement. An analytic solution is found for the log-negativity entangling capacity of two-qubit gates, which equals the entanglement of the Choi matrix isomorphic to the unitary operator. Surprisingly, the availability of prior entanglement does not affect this result; a property we call resource independence of the entangling capacity. We prove several useful upper-bounds on the entangling capacity that hold for general qudit dynamical operations, and for a whole family of entanglement monotones including log-negativity and log-robustness. The log-robustness entangling capacity is shown to be resource independent for general dynamics. We provide numerical results supporting a conjecture that the log-negativity entangling capacity is resource independence for all two-qudit unitaries.

Affiliated with

Also associated with

No associations

Rating

Optimal Entangling Capacity of Dynamical Processes 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 Optimal Entangling Capacity of Dynamical Processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimal Entangling Capacity of Dynamical Processes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-103592