Communication over a random-parameter quantum channel when the decoder is required to reconstruct parameter sequence considered. We study scenarios that include either strictly-causal, causal, or non-causal side information (CSI) available at encoder, and also CSI not available. This model can be viewed as form of metrology, counterpart classical rate-and-state with state estimation decoder. Re...

The magnetic analog of the Grüneisen parameter, i.e., the magnetocaloric effect, is a valuable tool for studying field-tuned quantum phase transitions. We determine the magnetic Grüneisen parameter of the one-dimensional random transverse-field Ising model, focusing on its lowtemperature behavior at the exotic infinite-randomness quantum critical point and in the associated quantum Griffiths ph...