Temporal-domain magnonic Mach-Zehnder interferometer
ORAL
Abstract
Emerging quantum magnonic technologies [1–3], such as, e.g., single magnon sources [2] and fabrication methods for strong on-chip magnon-photon coupling [3], necessitate the further study of single magnon decoherence (SMD) mechanisms.
We propose using magnon and qubit (with a much longer lifetime) states to compose a temporal-domain magnonic Mach-Zehnder interferometer via a simple SMD measurement scheme. These evolve independently but can be coupled temporarily by magnetic field pulses to entangle or unentangle them.
The scheme works as follows. The system begins unentangled, and the qubit is excited. A magnetic pulse entangles the system. Then, it receives an “unentangling” pulse after a free evolution time τ. The final qubit population describes the SMD mechanisms when τ compares to the magnon lifetime.
In summary, we proposed a temporal-domain magnonic Mach-Zehnder interferometer that is realizable with available technology. This can be used to answer fundamental questions of quasi-particle decoherence at single quantum levels and may help enable finite magnon number state applications.
[1] D. D. Awschalom et al., IEEE Trans. Quantum Eng. 2 5500836 (2021).
[2] A. V. Chumak et al., IEEE Trans. Magn. 58 6 0800172 (2022).
[3] P. G. Baity et al., Appl. Phys. Lett. 119 033502 (2021).
We propose using magnon and qubit (with a much longer lifetime) states to compose a temporal-domain magnonic Mach-Zehnder interferometer via a simple SMD measurement scheme. These evolve independently but can be coupled temporarily by magnetic field pulses to entangle or unentangle them.
The scheme works as follows. The system begins unentangled, and the qubit is excited. A magnetic pulse entangles the system. Then, it receives an “unentangling” pulse after a free evolution time τ. The final qubit population describes the SMD mechanisms when τ compares to the magnon lifetime.
In summary, we proposed a temporal-domain magnonic Mach-Zehnder interferometer that is realizable with available technology. This can be used to answer fundamental questions of quasi-particle decoherence at single quantum levels and may help enable finite magnon number state applications.
[1] D. D. Awschalom et al., IEEE Trans. Quantum Eng. 2 5500836 (2021).
[2] A. V. Chumak et al., IEEE Trans. Magn. 58 6 0800172 (2022).
[3] P. G. Baity et al., Appl. Phys. Lett. 119 033502 (2021).
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Presenters
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Cody A Trevillian
Oakland University
Authors
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Cody A Trevillian
Oakland University
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Vasyl S Tyberkevych
Oakland University