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RSFQ based microwav...
RSFQ based microwave controller for qubit
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- Rafique, Raihan, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ohki, Thomas, 1977 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Engseth, Henrik, 1972 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Yurievna Herr, Anna, 1969 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2007
- 2007
- English.
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In: 11th International Superconducting Electronics Conference, Washington DC, USA, June 10-14, 2007.. ; 11, s. P-U05
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Abstract
Subject headings
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- We present a Rapid Single Flux Quantum (RSFQ) microwave controller for superconducting qubits. Applying microwaves from room temperature sources is the conventional approach to excite quantum state transitions. Finding a method to apply short microwave bursts with a narrow linewidth is a challenge for on-chip Josephson based oscillators. We present a scheme containing an RSFQ pulse generator, ultra narrowband filter, SQUID based resonator and coupler. The operating frequency of the designed controller is 3-6 GHz. The unique feature of this design is a SQUID based resonator. By varying magnetic field in the SQUID, theresonance length can be varied between λ/4 and λ/2. Theresonator is added as a shunt between the filter and coupler. Transmission of microwave signals from the filter to the output is determined by the shunt resonance. RSFQ T flip-flop circuit is designed to control the magnetic field applied to the SQUID in the resonator. Miniaturization of the coupler of 2-10 GHz has been done using a quasi-lumped element designed. We present the simulations results for the frequency response ofdifferent resonance lengths of the modulator.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
Publication and Content Type
- kon (subject category)
- vet (subject category)
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