Heat cost of parametric generation of microwave squeezed states

TL;DR

This paper analyzes how the process of generating microwave squeezed states through parametric methods increases entropy, highlighting the thermodynamic costs relevant for quantum computing systems.

Contribution

It quantifies the entropy increase during parametric squeezing and discusses its implications for the repeated operation of quantum oscillators in quantum computing.

Findings

Entropy increase is quadratic in squeezing rate

Entropy can become significant in repeated oscillator operations

Implications for thermodynamic costs in quantum systems

Abstract

In parametric systems, squeezed states of radiation can be generated via extra work done by external sources. This eventually increases the entropy of the system despite the fact that squeezing is reversible. We investigate the entropy increase due to squeezing and show that it is quadratic in the squeezing rate and may become important in the repeated operation of tunable oscillators (quantum buses) used to connect qubits in various proposed schemes for quantum computing.