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quant-ph2007★ 2 cited
PEPS as unique ground states of local Hamiltonians
David Perez-Garcia, Frank Verstraete, J. Ignacio Cirac +1
In this paper we consider projected entangled pair states (PEPS) on arbitrary lattices. We construct local parent Hamiltonians for each PEPS and isolate a condition under which the…
quant-ph2007★ 2 cited
Quantum engineering of photon states with entangled atomic ensembles
D. Porras, J. I. Cirac
We propose and analyze a new method to produce single and entangled photons which does not require cavities. It relies on the collective enhancement of light emission as a conseque…