Protocol for generating an arbitrary quantum state of the magnetization in cavity magnonics

Sharma S, Bittencourt VASV, Kusminskiy SV (2022)

Publication Type: Journal article

Publication year: 2022

Journal

JPhys Materials Institute of Physics (IOP)

Book Volume: 5

Article Number: 034006

Journal Issue: 3

DOI: 10.1088/2515-7639/ac81f0

Abstract

We propose and numerically evaluate a protocol to generate an arbitrary quantum state of the magnetization in a magnet. The protocol involves repeatedly exciting a frequency-tunable superconducting transmon and transferring the excitations to the magnet via a microwave cavity. To avoid decay, the protocol must be much shorter than magnon lifetime. Speeding up the protocol by simply shortening the pulses leads to non-resonant leakage of excitations to higher levels of the transmon accompanied by higher decoherence. We discuss how to correct for such leakages by applying counter pulses to de-excite these higher levels. In our protocol, states with a maximum magnon occupation of up to ∼9 and average magnon number up to ∼4 can be generated with fidelity > 0.75.

Additional Organisation(s)

Sonderforschungsbereich/Transregio 306/1: Quantenkooperativität von Licht und Materie - QuCoLiMa

Related research project(s)

Optomagnomechanical arrays (B05) TRR 306: Quantenkooperativität von Licht und Materie – QuCoLiMa Jan. 1, 2021 - Dec. 31, 2024

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Sharma, S., Bittencourt, V.A.S.V., & Kusminskiy, S.V. (2022). Protocol for generating an arbitrary quantum state of the magnetization in cavity magnonics. JPhys Materials, 5(3). https://dx.doi.org/10.1088/2515-7639/ac81f0

MLA:

Sharma, Sanchar, Victor A. S. V. Bittencourt, and Silvia Viola Kusminskiy. "Protocol for generating an arbitrary quantum state of the magnetization in cavity magnonics." JPhys Materials 5.3 (2022).

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