Analog Quantum Control of Magnonic Cat States on a Chip by a Superconducting Qubit

Marios Kounalakis, Gerrit E.W. Bauer, Yaroslav M. Blanter

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)
67 Downloads (Pure)

Abstract

We propose to directly and quantum-coherently couple a superconducting transmon qubit to magnons - the quanta of the collective spin excitations, in a nearby magnetic particle. The magnet's stray field couples to the qubit via a superconducting quantum interference device. We predict a resonant magnon-qubit exchange and a nonlinear radiation-pressure interaction that are both stronger than dissipation rates and tunable by an external flux bias. We additionally demonstrate a quantum control scheme that generates magnon-qubit entanglement and magnonic Schrödinger cat states with high fidelity.

Original languageEnglish
Article number037205
Number of pages7
JournalPhysical Review Letters
Volume129
Issue number3
DOIs
Publication statusPublished - 2022

Fingerprint

Dive into the research topics of 'Analog Quantum Control of Magnonic Cat States on a Chip by a Superconducting Qubit'. Together they form a unique fingerprint.

Cite this