US 11,451,231 B2 · Robust quantum logical gates

Abstract

Techniques for implementing robust quantum logic gates are provided and described. In some aspects, a quantum logic gate between a plurality of cavities comprising a first cavity and a second cavity is implemented by performing a first beam splitter operation between the first cavity and the second cavity using a coupling transmon that is dispersively coupled to both the first cavity and the second cavity, and performing a controlled phase shift operation between the second cavity and an ancilla transmon that is dispersively coupled to the second cavity but not dispersively coupled to the first cavity.

Claims20

Dependent claims

A method for implementing a quantum logic gate between a plurality of cavities comprising a first cavity and a second cavity, the method comprising:

performing a first beam splitter (BS) operation between the first cavity and the second cavity using a coupling transmon that is dispersively coupled to both the first cavity and the second cavity;
and
performing a controlled phase shift (CPS) operation between the second cavity and an ancilla transmon that is dispersively coupled to the second cavity but not dispersively coupled to the first cavity.

Dependencies are inferred from the claim text.

Facts

Application

16/959,184Filed 5 Jan 2019 · us provisional application

Priority

5 Jan 2018

Published

US 2020/0412369 A131 Dec 2020

Granted

20 Sep 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

G06N 10/20
Quantum computing, i.e. information processing based on quantum-mechanical phenomena: models of quantum computing, e.g. quantum circuits or…
G06N 10/40
Quantum computing, i.e. information processing based on quantum-mechanical phenomena: physical realisations or architectures of quantum processors…
G06N 10/70
Quantum computing, i.e. information processing based on quantum-mechanical phenomena: quantum error correction, detection or prevention, e.g.…
H01P 5/18
Conjugate devices, i.e. devices having at least one port decoupled from one other port: consisting of two coupled guides, e.g. directional couplers

Robust quantum logical gates

Life of this patent

Robust quantum logical gates

Life of this patent

Abstract

Claims20