Exploring a four-qubit Hilbert space using hyper entangled photons

12 10/2015

Monday, 12 Oct. 2015, 11:00 - 12:00

Workgroup Walther Group

Presenter: Aditya Sharma
Host: P. Walther
Where: Kurt Gödel lecture hall, ground floor 3E63; Boltzmanng. 5, 1090 Wien

Quantum entanglement exhibits many interesting features that emerge only in high-dimensional systems. One such phenomenon is bound entanglement, entanglement that cannot be distilled using only local operations and classical communication. All previous reports on bound entanglement in photonic systems have relied on random unitary operations to introduce the necessary decoherence. I will discuss our efforts to realize the four-qubit bound-entangled Smolin state using the polarizations and orbital angular momenta of hyper entangled photons in an experiment that does not use random unitaries.