Bulletin of the American Physical Society
2023 Spring Meeting of the APS Eastern Great Lakes Section
Volume 68, Number 5
Saturday, April 1, 2023; Oakland University, Rochester, Michigan
Session J02: Applied and Computational Physics
2:15 PM–3:15 PM,
Saturday, April 1, 2023
Oakland University HHB
Room: 2085
Chair: Dennis Kuhl, Marietta College
Abstract: J02.00002 : Temporal magnon-qubit Mach-Zehnder interferometry
2:30 PM–2:45 PM
Presenter:
Cody A Trevillian
(Oakland University)
Authors:
Cody A Trevillian
(Oakland University)
Vasyl S Tyberkevych
(Oakland University)
We propose a temporal magnon-qubit Mach-Zehnder (MZ) interferometer via a simple measurement scheme based on entangling magnon and qubit states. The states evolve freely in a large detuning. Magnetic pulses decrease detuning to couple the states temporarily and controllably entangle or unentangle them.
The scheme is as follows. In an unentangled system, the qubit is excited. Then, a magnetic pulse entangles the system. After freely evolving for time τ, an “unentangling” pulse is received. Finally, the qubit is measured. Analogous to typical MZ interferometry, the interference pattern of the final qubit population carries information about the magnon dynamics. When τ compares to the magnon lifetime, it describes single magnon decoherence.
In summary, we proposed a temporal magnon-qubit MZ interferometer. This may help answer fundamental questions of quasi-particle decoherence at single quantum levels and enable single magnon applications.
1D. D. Awschalom et al., IEEE Trans. Quantum Eng. 2 5500836 (2021).
2A. V. Chumak et al., IEEE Trans. Magn. 58 6 0800172 (2022).
3P. G. Baity et al., Appl. Phys. Lett. 119 033502 (2021).
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