Turutanov O. Metastable current states and tunable stochastic resonance in superconducting thin films and quantum interferometers

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0409U005883

Thesis Registration Form

0409U005883.pdf

Applicant for

Specialization

  • 01.04.22 - Надпровідність

20-10-2009

Specialized Academic Board

Д 64.175.03

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

Essay

The conditions for appearing and controlling the stochastic resonannce (SR) mode in superconducting thin films and quantum interferometers (SQUIDs) are studied. New effect of stochastic-parametric resonance (SPR) is found providing maximum gain of a weak informational signal in SQUIDs at arbitrary low temperature. A SR- and SPR-based principle is suggested of building SQUID antennae to enhance the sensitivity to the weak signal by 30 times as compared to exisiting SQUID receivers. A number of devices is proposed and analysed which realise this principle, including an amplifier to measure quantum states of Josephson flux qubits.

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Files

AREF.doc

DISSER.doc

DISSER.doc

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