Physics – Quantum Physics
Scientific paper
2010-07-06
Phys. Rev. Lett. 106, 090501 (2011)
Physics
Quantum Physics
4 pages, one figure. New version: typos corrected, one reference added. To appear in PRL
Scientific paper
10.1103/PhysRevLett.106.090501
We introduce a family of Hamiltonian systems for measurement-based quantum computation with continuous variables. The Hamiltonians (i) are quadratic, and therefore two body, (ii) are of short range, (iii) are frustration-free, and (iv) possess a constant energy gap proportional to the squared inverse of the squeezing. Their ground states are the celebrated Gaussian graph states, which are universal resources for quantum computation in the limit of infinite squeezing. These Hamiltonians constitute the basic ingredient for the adiabatic preparation of graph states and thus open new venues for the physical realization of continuous-variable quantum computing beyond the standard optical approaches. We characterize the correlations in these systems at thermal equilibrium. In particular, we prove that the correlations across any multipartition are contained exactly in its boundary, automatically yielding a correlation area law.
Acin Antonio
Aolita Leandro
Ferraro Alessandro
Roncaglia Augusto J.
No associations
LandOfFree
Gapped Two-Body Hamiltonian for continuous-variable quantum computation 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 Gapped Two-Body Hamiltonian for continuous-variable quantum computation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gapped Two-Body Hamiltonian for continuous-variable quantum computation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-217111