US 11,774,522 B2
Quantum architecture biasing scheme
Matthew Beck, Danbury, CT (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Oct. 17, 2022, as Appl. No. 18/46,994.
Application 18/046,994 is a continuation of application No. 17/005,182, filed on Aug. 27, 2020, granted, now 11,536,780.
Prior Publication US 2023/0068621 A1, Mar. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 33/035 (2006.01); G06N 10/00 (2022.01); H03F 19/00 (2006.01); H03K 3/38 (2006.01); H03K 17/92 (2006.01); H03K 5/00 (2006.01); G06N 10/40 (2022.01); H10N 60/12 (2023.01)
CPC G01R 33/0358 (2013.01) [G06N 10/00 (2019.01); G06N 10/40 (2022.01); H03F 19/00 (2013.01); H03K 3/38 (2013.01); H03K 5/00006 (2013.01); H03K 17/92 (2013.01); H10N 60/12 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A radio-frequency (RF) to direct current (DC) converter comprising:
a Josephson junction (JJ);
a direct electrical current (DC) to single flux quantum (SFQ) converter connected to the JJ, wherein the DC to SFQ converter provides for switching action of the JJ by transmitting SFQ pulses to the JJ; and
a rapid single flux quantum (RSFQ) pulse doubler that is connected to the DC to SFQ converter and that generates SFQ pulse current to the DC to SFQ converter for affecting the JJ,
wherein the DC to SFQ converter converts radio frequency (RF) current from an external RF source into at least a portion of the SFQ pulses, and wherein the JJ is caused to switch at a rate commensurate with an RF frequency of the RF current to generate a steady state voltage across the JJ that is linearly dependent on the RF frequency.