US 12,592,712 B2 · Superconducting analog-to-digital converter (ADC) system

Abstract

One example includes a superconducting analog-to-digital converter (ADC) system. The system includes a control line configured to propagate an interrogation pulse and a superconducting quantum interference device (SQUID) comprising a first Josephson junction and a second Josephson junction. The SQUID can be configured to receive an input current. The first Josephson junction can be configured to trigger to provide a first pulse in response to the interrogation pulse and a first polarity of the input current and the second Josephson junction can be configured to trigger to generate a second pulse in response to the interrogation pulse and a second polarity of the input current. The system further includes an output stage configured to propagate the first pulse to an output to indicate the first polarity of the input current.

Claims20

Dependent claims

A superconducting analog-to-digital converter (ADC) system comprising:

a control line configured to propagate an interrogation pulse;
a superconducting quantum interference device (SQUID) comprising a first Josephson junction and a second Josephson junction, the SQUID being configured to receive an input current, the first Josephson junction being configured to trigger to provide a first pulse in response to the interrogation pulse and a first polarity of the input current, the second Josephson junction being configured to trigger to generate a second pulse in response to the interrogation pulse and a second polarity of the input current;
and
an output stage configured to propagate the first pulse to an output to indicate the first polarity of the input current.

1 more element

A method for converting an input current to an output pulse, the method comprising:

providing an interrogation pulse on a control line that is inductively coupled to a superconducting quantum interference device (SQUID) that receives the input current to trigger a first Josephson junction of the SQUID to provide a first pulse in response to a first polarity of the input current and to trigger a second Josephson junction of the SQUID to generate a second pulse in response to a second polarity of the input current;
and
providing a clock signal to an output stage to propagate the first pulse to an output to indicate the first polarity of the input current.

A superconducting analog-to-digital converter (ADC) system comprising:

a control line configured to propagate an interrogation pulse;
a superconducting quantum interference device (SQUID) comprising:
a first inductive coupling to the control line;
a second inductive coupling to the control line;
a first Josephson junction coupled to the first inductive coupling;
and
a second Josephson junction coupled to the second inductive coupling, the SQUID being configured to receive an input current between the first and second inductive couplings such that the first Josephson junction is configured to trigger to provide a first pulse in response to the interrogation pulse and a first polarity of the input current and the second Josephson junction is configured to trigger to generate a second pulse in response to the interrogation pulse and a second polarity of the input current;
and
an output stage configured to propagate the first pulse to an output to indicate the first polarity of the input current.

6 more elements

Dependencies are inferred from the claim text.

Superconducting analog-to-digital converter (ADC) system

Life of this patent

Superconducting analog-to-digital converter (ADC) system

Life of this patent

Abstract

Claims20