Condensed Matter Seminar

Alexei Kitaev
Caltech

Thursday, April 12, 2007
1:00 pm in SPL 52

Quantum devices based on superconducting inductors

Abstract: I will discuss potential applications of a "superinductor" -- a sufficiently large superconducting inductor with relatively small capacitance, such that the characteristic impedance square root(L/C) is much greater than h/(2e)2. Such an element can be realized as a narrow strip of amorphous superconducting film. Superinductors, Josephson junctions, and capacitors can be used to construct a variety of interesting circuits, from a switch to a DC transformer to a qubit that features exponential protection from decoherence.