Verification of stable operation of rapid single flux quantum devices with frequency-dependent dissipation

Juha Hassel (Corresponding Author), Leif Grönberg, Panu Helistö

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

It has been suggested that rapid single flux quantum (RSFQ) devices could be used as the classical interface of superconducting qubit systems. One problem is that the interface acts as a dissipative environment for a qubit. Recently, ways to modify the RSFQ damping to reduce the dissipation have been introduced. One of the solutions is to damp the Josephson junctions by a frequency-dependent linear circuit instead of the plain resistor. The approach has previously been experimentally tested with a simple SFQ comparator. In this paper we perform experiments with a full RSFQ circuit, and thus conclude that in terms of stable operation the approach is applicable to scalable RSFQ circuits. Realization and optimization issues are also discussed.
Original languageEnglish
Article number157
Number of pages9
JournalNew Journal of Physics
Volume9
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Fingerprint

dissipation
linear circuits
plains
resistors
Josephson junctions
damping
optimization

Keywords

  • Josephson junction

Cite this

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title = "Verification of stable operation of rapid single flux quantum devices with frequency-dependent dissipation",
abstract = "It has been suggested that rapid single flux quantum (RSFQ) devices could be used as the classical interface of superconducting qubit systems. One problem is that the interface acts as a dissipative environment for a qubit. Recently, ways to modify the RSFQ damping to reduce the dissipation have been introduced. One of the solutions is to damp the Josephson junctions by a frequency-dependent linear circuit instead of the plain resistor. The approach has previously been experimentally tested with a simple SFQ comparator. In this paper we perform experiments with a full RSFQ circuit, and thus conclude that in terms of stable operation the approach is applicable to scalable RSFQ circuits. Realization and optimization issues are also discussed.",
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Verification of stable operation of rapid single flux quantum devices with frequency-dependent dissipation. / Hassel, Juha (Corresponding Author); Grönberg, Leif; Helistö, Panu.

In: New Journal of Physics, Vol. 9, 157, 2007.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Verification of stable operation of rapid single flux quantum devices with frequency-dependent dissipation

AU - Hassel, Juha

AU - Grönberg, Leif

AU - Helistö, Panu

N1 - Project code: 1267

PY - 2007

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AB - It has been suggested that rapid single flux quantum (RSFQ) devices could be used as the classical interface of superconducting qubit systems. One problem is that the interface acts as a dissipative environment for a qubit. Recently, ways to modify the RSFQ damping to reduce the dissipation have been introduced. One of the solutions is to damp the Josephson junctions by a frequency-dependent linear circuit instead of the plain resistor. The approach has previously been experimentally tested with a simple SFQ comparator. In this paper we perform experiments with a full RSFQ circuit, and thus conclude that in terms of stable operation the approach is applicable to scalable RSFQ circuits. Realization and optimization issues are also discussed.

KW - Josephson junction

U2 - 10.1088/1367-2630/9/5/157

DO - 10.1088/1367-2630/9/5/157

M3 - Article

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JO - New Journal of Physics

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