Tunable anisotropic quantum Rabi model via a magnon--spin-qubit ensemble
- URL: http://arxiv.org/abs/2105.07430v2
- Date: Fri, 3 Dec 2021 09:57:21 GMT
- Title: Tunable anisotropic quantum Rabi model via a magnon--spin-qubit ensemble
- Authors: Ida C. Skogvoll, Jonas Lidal, Jeroen Danon, Akashdeep Kamra
- Abstract summary: We study theoretically a spin qubit exchange-coupled to an anisotropic ferromagnet that hosts magnons with a controllable degree of intrinsic squeezing.
We demonstrate that the composite nature of the squeezed magnon enables concurrent excitation of three spin qubits coupled to the same magnet.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The ongoing rapid progress towards quantum technologies relies on new hybrid
platforms optimized for specific quantum computation and communication tasks,
and researchers are striving to achieve such platforms. We study theoretically
a spin qubit exchange-coupled to an anisotropic ferromagnet that hosts magnons
with a controllable degree of intrinsic squeezing. We find this system to
physically realize the quantum Rabi model from the isotropic to the
Jaynes-Cummings limit with coupling strengths that can reach the deep-strong
regime. We demonstrate that the composite nature of the squeezed magnon enables
concurrent excitation of three spin qubits coupled to the same magnet. Thus,
three-qubit Greenberger-Horne-Zeilinger and related states needed for
implementing Shor's quantum error-correction code can be robustly generated.
Our analysis highlights some unique advantages offered by this hybrid platform,
and we hope that it will motivate corresponding experimental efforts.
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