Conditional detection of pure quantum states of light after storage in a waveguide

Details Conditional detection of pure quantum states of light after storage in a waveguide Conditional detection of pure quantum states of light after storage in a waveguide

2011-11-02

arxiv.org/abs/1111.0676v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

Conditional detection is an important tool to extract weak signals from a noisy background and is closely linked to heralding, which is an essential component of protocols for long distance quantum communication and distributed quantum information processing in quantum networks. Here we demonstrate the conditional detection of time-bin qubits after storage in and retrieval from a photon-echo based waveguide quantum memory. Each qubit is encoded into one member of a photon-pair produced via spontaneous parametric down conversion, and the conditioning is achieved by the detection of the other member of the pair. Performing projection measurements with the stored and retrieved photons onto different bases we obtain an average storage fidelity of 0.885 \pm 0.020, which exceeds the relevant classical bounds and shows the suitability of our integrated light-matter interface for future applications of quantum information processing.

Affiliated with

Also associated with

No associations

Rating

Conditional detection of pure quantum states of light after storage in a waveguide 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 Conditional detection of pure quantum states of light after storage in a waveguide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conditional detection of pure quantum states of light after storage in a waveguide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-700525