>>36
In addition, its final quantum state must be read out in the manipulation.
This can be performed by joining the modified circuit to a single-electron transistor ( SET ) for a Josephson charge qubit.
As long as a transport voltage is turned off, the transistor ( SET ) gives only a weak influence on the qubit.
Inversely, if the voltage is switched on, the phase coherence of a qubit is broken down by a dissipative through the transistor ( SET ) within a short time.
一
