Experimental Measurement of Lower and Upper Bounds of Concurrence for Mixed Quantum States

Details Experimental Measurement of Lower and Upper Bounds of Concurrence for Mixed Quantum States Experimental Measurement of Lower and Upper Bounds of Concurrence for Mixed Quantum States

2008-08-06

arxiv.org/abs/0808.0776v1

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

We experimentally measure the lower and upper bounds of concurrence for a set of two-qubit mixed quantum states using photonic systems. The measured concurrence bounds are in agreement with the results evaluated from the density matrices reconstructed through quantum state tomography. In our experiment, we propose and demonstrate a simple method to provide two faithful copies of a two-photon mixed state required for parity measurements: Two photon pairs generated by two neighboring pump laser pulses through optical parametric down conversion processes represent two identical copies. This method can be conveniently generalized for entanglement estimation of multi-photon mixed states.

Affiliated with

Also associated with

No associations

Rating

Experimental Measurement of Lower and Upper Bounds of Concurrence for Mixed Quantum States 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 Experimental Measurement of Lower and Upper Bounds of Concurrence for Mixed Quantum States, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Experimental Measurement of Lower and Upper Bounds of Concurrence for Mixed Quantum States will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-27565