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CATEGORY:
Special Seminar - Solid State Institute, Technion
TITLE:
Efficient benchmarking of photonic cluster state sources
Speaker:
Mr. Thomas Nutz
Affiliation:
Imperial College, London
WHEN:
Thursday
19/01/2017, 12:30 - 13:30
WHERE:
Lewiner, Seminar Room (412)
Organizer:
-
Site:
-
Presentation:
Event Lecture notes
Remarks:
Host: Assistant Professor Netanel Lindner

Abstract

 


Certain single-photon sources are capable of emitting strings of entangled photons. In particular, photonic cluster state sources could enable measurement-based quantum computing and are therefore under intense investigation. While experiments are progressing, the issue of benchmarking comes to the fore.

The challenge is to quantify the useful long-range entanglement of a large photonic state using only the few-photon correlation measurements that are feasible given limited emission/detection efficiencies. We present a lower bound on localizable entanglement that requires only simple three-qubit correlation measurements. This method therefore enables direct demonstration of computationally powerful multi-photon entanglement with currently available experimental capabilities.

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