As the field of Quantum Computing further emerges, specialized
and
dedicated electronics are required. Our company works in close  collaboration with ion-trap research
institutions and supports
among others, the QUELE-project with specialized
electronics.
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Picture: In a planar trap
quantum
computing is envisaged by allowing single electrons
communicate with each other. Detection
of Quantum States, Read-Out and Manipulation is supported by
using cryogenic circuitry.
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Ultra-stable voltage sources for qubit
biasing and cryo
electronics for operation down and below 4.2K are important elements here.
Ultra highly stable voltage sources on the 10-7-level help to
achieve a
long coherence time for quantum states, whereas cryogenic amplifiers, down
converters,
and Q-switches provide the accessibility into a cryogenic environment, which
is usually
difficult to access. Electronics currently under development comprise
Gallium-Arsenide
(GaAs) based technology (filters, mixers, amplifiers) as well as SiGe,
heterostructure
BJT's.
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Literature (please click title for online abstract)
S. Stahl, F. Galve, J. Alonso, S. Djekic, W. Quint, T. Valenzuela, J.
Verdú, M. Vogel
and G. Werth,  A planar
Penning trap, Eur. Phys. J. D 32, 139-146 (2005)
S. Stahl, J. Alonso, S. Djekic, H.-J. Kluge, W. Quint, J. Verdú, M.
Vogel
and G. Werth, Phase-sensitive measurement of trapped particle
motions,
J. Phys. B: At. Mol. Opt. Phys. 38 (2005) 297-304
M. Vogel, J. Alonso, S. Djekic, H.-J. Kluge, W. Quint, S. Stahl, J.
Verdú and G. Werth, Towards
electronic g-factor measurements in medium-heavy hydrogenlike and
lithiumlike ions,
Nucl. Inst. Meth. B 235 (2005) 7
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