Entangled photons on demand: Erasing which-path information with sidebands

Details Entangled photons on demand: Erasing which-path information with sidebands Entangled photons on demand: Erasing which-path information with sidebands

2009-07-02

arxiv.org/abs/0907.0437v2

Phys. Rev. B 80, 241303(R) (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; New title, discussion of dephasing added, version published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.80.241303

The biexciton cascade in a quantum dot can be used to generate entangled-photon pairs rapidly and deterministically (on demand). However, due to a large fine-structure splitting between intermediate exciton energy levels, which-path information encoded in the frequencies of emitted photon pairs leads to a small degree of entanglement. Here we show that this information can be efficiently erased by modulating the exciton and biexciton energy levels, giving rise to new decay paths through additional sidebands. The resulting degree of entanglement is substantial, and can be made maximal through spectral filtering, with only a nominal reduction in collection efficiency.

Affiliated with

Also associated with

No associations

Rating

Entangled photons on demand: Erasing which-path information with sidebands 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 Entangled photons on demand: Erasing which-path information with sidebands, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Entangled photons on demand: Erasing which-path information with sidebands will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-730840