Journal
PHYSICAL REVIEW A
Volume 79, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.012313
Keywords
Gaussian distribution; quantum optics; Schrodinger equation
Categories
Funding
- Engineering and Physical Sciences Research Council [MSM 6198959213, 202/08/0224]
- Alexander von Humboldt Foundation
- EU [FP7 212008COMPAS]
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Non-Gaussian states are highly sought-after resources in continuous-variable quantum optical information processing protocols. We outline a method for the optimized preparation of any pure non-Gaussian state to a given desired accuracy. Our proposal arises from two connected concepts. First, we define the operational cost of a desired state as the largest Fock state required for its approximate preparation. Second, we suggest that this non-Gaussian operational cost can be reduced by judicial application of optimized Gaussian operations. In particular, we identify a minimal core non-Gaussian state for any target pure state, which is related to the core state by Gaussian operations alone. We demonstrate this method for Schrodinger cat states.
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