Fast and slow engineered relaxation (the many-body quantum Mpemba effect) on six-atom neutral-atom processors provides a computational-basis benchmark of device quality and separates detuning from amplitude calibration errors as complementary drift channels.
Qadence: a differentiable interface for digital-analog programs
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abstract
Digital-analog quantum computing (DAQC) is an alternative paradigm for universal quantum computation combining digital single-qubit gates with global analog operations acting on a register of interacting qubits. Currently, no available open-source software is tailored to express, differentiate, and execute programs within the DAQC paradigm. In this work, we address this shortfall by presenting Qadence, a high-level programming interface for building complex digital-analog quantum programs developed at Pasqal. Thanks to its flexible interface, native differentiability, and focus on real-device execution, Qadence aims at advancing research on variational quantum algorithms built for native DAQC platforms such as Rydberg atom arrays.
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Validation and calibration of quantum hardware through the many-body quantum Mpemba effect
Fast and slow engineered relaxation (the many-body quantum Mpemba effect) on six-atom neutral-atom processors provides a computational-basis benchmark of device quality and separates detuning from amplitude calibration errors as complementary drift channels.