Quantum-dot-spin single-photon interface

Details Quantum-dot-spin single-photon interface Quantum-dot-spin single-photon interface

2010-03-26

arxiv.org/abs/1003.5195v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Using background-free detection of spin-state-dependent resonance fluorescence from a single-electron charged quantum dot with an efficiency of 0:1%, we realize a single spin-photon interface where the detection of a scattered photon with 300 picosecond time resolution projects the quantum dot spin to a definite spin eigenstate with fidelity exceeding 99%. The bunching of resonantly scattered photons reveals information about electron spin dynamics. High-fidelity fast spin-state initialization heralded by a single photon enables the realization of quantum information processing tasks such as non-deterministic distant spin entanglement. Given that we could suppress the measurement back-action to well below the natural spin-flip rate, realization of a quantum non-demolition measurement of a single spin could be achieved by increasing the fluorescence collection efficiency by a factor exceeding 20 using a photonic nanostructure.

Affiliated with

Also associated with

No associations

Rating

Quantum-dot-spin single-photon interface 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 Quantum-dot-spin single-photon interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum-dot-spin single-photon interface will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-183062