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30 kV coaxial vacuum-tight feedthrough for operation at cryogenic temperatures
30 kV coaxial vacuum-tight feedthrough cryogenic temperatures
2010/11/16
In this paper we describe the technology of building a vacuum-tight high voltage feedthrough which is able to operate at voltages up to 30 kV. The feedthrough has a coaxial structure with a grounded ...
Self-Consistent RPA is extended in a way so that it is compatable with a variational ansatz for
the ground state wave function as a fermionic many-body vacuum. Employing the usual equation
of motion...
We show that the total quantum efficiency of multiple optical modes cannot increase under linear-optical processing. That is, the sum of quantum efficiencies of any K output modes of a linear-optical ...