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Heiss W.D. (ed.) Quantum dots.. a doorway to - tiera.ru

Heiss W.D. (ed.) Quantum dots.. a doorway to - tiera.ru

Heiss W.D. (ed.) Quantum dots.. a doorway to - tiera.ru

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250 Ω<br />

twist<strong>ed</strong> pair<br />

20 MΩ<br />

powder filter<br />

Semiconduc<strong>to</strong>r Few-Electron <strong>Quantum</strong> Dots as Spin Qubits 43<br />

SGN<br />

SGN<br />

GND GND<br />

fiber<br />

DAC 3 DAC 4 ....... DAC 8<br />

connec<strong>to</strong>r box<br />

0.22 nF<br />

OXFORD KELVINOX 300<br />

clean<br />

ground<br />

0.4 nF 0.4 nF<br />

0.5 nF 0.5 nF<br />

0.5 nF 0.5 nF<br />

cold<br />

ground<br />

10 MΩ 10 MΩ<br />

cold<br />

finger<br />

0.4 nF 0.4 nF<br />

(20 nF) (20 nF)<br />

10 aF 10 aF<br />

sample<br />

GND<br />

GND<br />

SGN<br />

SGN<br />

250 Ω<br />

twist<strong>ed</strong> pair<br />

20 MΩ<br />

powder filter<br />

ELECTRONICS<br />

SAMPLE<br />

ROOM-T<br />

BASE-T<br />

Fig. 12. Electrical circuit for applying voltages <strong>to</strong> the gate electrodes. Elements<br />

shown in gray are connect<strong>ed</strong> <strong>to</strong> ground. Gray lines indicate the shielding of the<br />

measurement electronics and wires

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