Applications of surface acoustic wave resonators coupled to a Josephson ring modulator

Patent metadata

Field	Value
Publication number	US-10715083-B2
Application number	US-201916385667-A
Country	US
Kind code	B2
Filing date	Apr 16, 2019
Priority date	Jul 30, 2018
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

Superconducting device applications implemented with two surface acoustic wave resonators coupled to a Josephson ring modulator are provided. A method can include receiving, by a unitary Josephson mixer and from a first superconducting surface acoustic wave resonator of a superconducting device, a first surface acoustic wave signal that comprises one or more phonons that resonate at a first frequency, and receiving, by the unitary Josephson mixer and from a radio frequency source operatively coupled to the unitary Josephson mixer, a radio frequency control signal. The method can also include mixing the first surface acoustic wave signal and the radio frequency control signal and outputting a second surface acoustic wave signal based on mixing the first surface acoustic wave signal and the radio frequency control signal. The second surface acoustic wave signal can comprise one or more phonons that resonate at a second frequency.

First claim

What is claimed is:

1. A method, comprising:
receiving, by a unitary Josephson mixer, a first surface acoustic wave signal that comprises one or more phonons that resonate at a first frequency;
receiving, by the unitary Josephson mixer a radio frequency control signal;
mixing, by the unitary Josephson mixer, the first surface acoustic wave signal and the radio frequency control signal; and
outputting, by the unitary Josephson mixer, a second surface acoustic wave signal that comprises one or more phonons that resonate at a second frequency.

2. The method of claim 1 , further comprising:
transferring, by the unitary Josephson mixer, quantum information from a first superconducting surface acoustic wave resonator to a second superconducting surface acoustic wave resonator based on an application of a pump drive applied at a frequency difference between the first surface acoustic wave signal and the second surface acoustic wave signal.

3. The method of claim 1 , further comprising:
transferring, by the unitary Josephson mixer, quantum information from a second superconducting surface acoustic wave resonator to a first superconducting surface acoustic wave resonator based on an application of a pump drive applied at a frequency difference between the first surface acoustic wave signal and the second surface acoustic wave signal.

4. The method of claim 3 , further comprising:
transferring, based on the radio frequency control signal received by the unitary Josephson mixer, first quantum information from a first superconducting surface acoustic wave resonator to a second superconducting surface acoustic wave resonator and second quantum information from the second superconducting surface acoustic wave resonator to the first superconducting surface acoustic wave resonator.

5. The method of claim 1 , further comprising:
disconnecting, by the unitary Josephson mixer, a connection between a first superconducting surface acoustic wave resonator and a second superconducting surface acoustic wave resonator based on determining that the mixing of the first surface acoustic wave signal and the radio frequency control signal is to be stopped.

6. The method of claim 5 , further comprising:
reenabling, by the unitary Josephson mixer, the connection between the first superconducting surface acoustic wave resonator and the second superconducting surface acoustic wave resonator based on determining that the mixing of the first surface acoustic wave signal and the radio frequency control signal is to be restarted.

7. The method of claim 1 , further comprising:
transferring, by the unitary Josephson mixer, a first portion of quantum information between a first superconducting surface acoustic wave resonator and a second superconducting surface acoustic wave resonator based on a first power of the radio frequency control signal; and
transferring, by the unitary Josephson mixer, a second portion of quantum information between the second superconducting surface acoustic wave resonator and the first superconducting surface acoustic wave resonator based on a second power of the radio frequency control signal.

8. The method of claim 1 , wherein the mixing of the first surface acoustic wave signal and the radio frequency control signal comprises transducing the information carried by the first surface acoustic wave signal into the second surface acoustic wave signal in a unitary manner.

9. A method, comprising:
receiving, at a frequency converter, a first surface acoustic wave signal that comprises one or more first phonons that resonate at a first frequency;
receiving, at the frequency converter, a second surface acoustic wave signal that comprises one or more second phonons that resonate at a second frequency; and
implementing, by the frequency converter, lossless frequency conversion between first information associated with first surface acoustic wave signal and second information associated with the second surface acoustic wave signal based on a received radio drive frequency signal.

10. The method of claim 9 , further comprising
transducing, by the frequency converter, the first information and the second information as a function of amplitude of the radio drive frequency signal.

11. The method of claim 9 , wherein the implementing the lossless frequency conversion comprises:
mapping, by the frequency converter, a propagating radio frequency signal to a first phononic mode in a first surface acoustic wave resonator and a second phononic mode in a second surface acoustic wave resonator;
upconverting, by the frequency converter, the first phononic mode to the second surface acoustic wave resonator via an application of a radio frequency drive of the radio frequency source, wherein the upconverting the first phononic mode is enabled by a lossless three-wave mixing interaction; and

mapping, by the frequency converter, an outgoing radio frequency signal from a second superconducting surface acoustic wave resonator.

12. The method of claim 11 , wherein a first value of the radio frequency drive is equal to an absolute value of a frequency difference between a first resonance frequency of the first surface acoustic wave resonator minus a second resonance frequency of the second surface acoustic wave resonator.

13. The method of claim 9 , wherein the implementing the lossless frequency conversion comprises:
mapping, by the frequency converter, a propagating radio frequency signal to a first phononic mode in a first surface acoustic wave resonator and a second phononic mode in a second surface acoustic wave resonator; and
downconverting, by the frequency converter, the second phononic mode to the first surface acoustic wave resonator via an application of a radio frequency drive of the radio frequency source, wherein the downconverting the second phononic mode to the first surface acoustic wave resonator is facilitated via a lossless three-wave mixing interaction.

14. The method of claim 9 , further comprising:
transferring, by the frequency converter, first information at a first transfer frequency from a first surface acoustic wave resonator to a second surface acoustic wave resonator based on a frequency of the radio drive frequency signal.

15. The method of claim 14 , further comprising:
transferring, by the frequency converter, a portion of the second information from the second surface acoustic wave resonator to the first surface acoustic wave resonator based on a power level of the radio drive frequency signal.

16. The method of claim 15 , wherein the first information comprises first quantum information and the second information comprise second quantum information.

17. A method, comprising:
amplifying, by a nondegenerate Josephson parametric amplifier, first quadratures of a first radio frequency signal and second quadratures of a second radio frequency signal; and

outputting, by the nondegenerate Josephson parametric amplifier, a first amplified signal that comprises a first output signal and a first transmitted signal with frequency conversion and outputting a second amplified signal that comprises a second output signal and a second transmitted signal with frequency conversion.

18. The method of claim 17 , wherein the first output signal comprises a first same-frequency signal reflecting off a first port and the first transmitted signal comprises a first frequency-converted signal transmitted from a second port, and wherein the second output signal comprises a second same-frequency signal reflecting off the second port and the second

Assignees

• IBM

Inventors

• Abdo Baleegh

Classifications

• H03D7/005 Primary

  by means of superconductive devices · CPC title

• H03H9/25

  Constructional features of resonators using surface acoustic waves {(devices for manipulating acoustic surface waves in general G10K11/36)} · CPC title

• H03D2200/0074

  using a resistive mixer or a passive mixer · CPC title

• H03F19/00

  Amplifiers using superconductivity effects · CPC title

• G06N10/00

  Quantum computing, i.e. information processing based on quantum-mechanical phenomena · CPC title