Quantum Thermodynamics – Matteo Lostaglio (TU Delft)

Due to the fragility of quantum information, quantum error correction is 
a prerequisite of large-scale quantum computing. A standard paradigm is 
that of state injection, where a set of fault-tolerant core operations 
are promoted to universal quantum computation by injecting so-called 
magic states. The latter require complex distillation schemes, so they 
come at a limited rate and are noisy.

After an introduction, I will discuss error mitigation in this setting 
and present a quantity, the Quantum-assisted Robustness of Magic (QRoM), 
which measures the distance between ideal and available magic states. We 
show how the QRoM quantifies the sampling overhead of (quasiprobability 
based) error mitigation algorithms as a function of the noise parameter, 
interpolating between classical simulation and ideal QC. Furthermore, 
classical simulation and error mitigation can be seen as special 
instances of quantum-assisted simulation. In this task, fewer, noisier 
quantum resources boost simulations of a larger, ideal quantum 
computation with an overhead quantified by the QRoM.

Save the date!