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SQUBIT-2 Sintesi della relazione

Project ID: IST-2001-39083
Finanziato nell'ambito di: FP5-IST
Paese: Sweden

Sample and hold readout of qubits

Sample and hold readout of qubits.

We implemented a pulse and hold strategy for reading out qubits. Here the non-linear dynamics of the circuit is used to latch the output, holding the result long enough for a measurement to be made.

We studied the case of switching current detector with over-damped dynamics and high frequencies and discovered that it is possible to suppress phase diffusion and make a circuit with good latching characteristics. The readout of qubits was not successful, but the technique by is adapted to other problems in sensitive measurement where over-damped high frequency dynamics is desired, such as fast SQUID readout.


David HAVILAND, (Professor)
Tel.: +46-95-5378137
Fax: +46-8-55378466