A new modular twin-beamline X-ray test facility was designed, built, and commissioned to qualify full-size prototype detectors for the proposed AXIS mission.
Relativistic quantum Otto heat engine using a three-level Unruh-DeWitt detector
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In this study, we explore a relativistic quantum Otto heat engine with a qutrit as the working substance interacting with a quantum scalar field in curved spacetime. Unlike qubits, which extract work by simply expanding or shrinking a single energy gap, qutrits allow multiple energy gaps to be adjusted independently, enabling more versatile work extraction in the quantum Otto cycle. We derive a general positive work condition in terms of the effective temperature that each pair of energy levels perceives. Moreover, we discuss additional subtleties that are absent when using a qubit, such as the generation of coherence terms in the density matrix due to interactions.
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Design, development, and commissioning of a flexible test setup for the AXIS prototype detector
A new modular twin-beamline X-ray test facility was designed, built, and commissioned to qualify full-size prototype detectors for the proposed AXIS mission.