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Two-level system hyperpolarization with a quantum Szilard engine
Martin Spiecker
2026
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By implementing a quantum Szilard engine, we show that a superconducting granular aluminum fluxonium qubit is coupled weakly to a two-level system (TLS) environment of unknown physical origin. Since the TLSs are much longer lived than the qubit, non-exponential relaxation and non-Poissonian quantum jumps can be observed. These dynamics can be modeled using the stochastic Schrödinger equation and the Solomon equations.
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