Quantum heat valve and entanglement in superconducting $LC$ resonators

• URL: http://arxiv.org/abs/2309.11467v1
• Date: Wed, 20 Sep 2023 17:07:55 GMT
• Title: Quantum heat valve and entanglement in superconducting $LC$ resonators
• Authors: Yu-qiang Liu, Yi-jia Yang, Ting-ting Ma, and Chang-shui Yu
• Abstract summary: We employ the tunable coupling of two superconducting resonators to realize a heat valve by modulating magnetic flux using a superconducting quantum interference device (SQUID) We find a consistent relation between the heat current and quantum entanglement, which indicates the dominant role of entanglement on the heat valve.
• Score: 4.5516171596361685
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum superconducting circuit with flexible coupler has been a powerful platform for designing quantum thermal machines. In this letter, we employ the tunable coupling of two superconducting resonators to realize a heat valve by modulating magnetic flux using a superconducting quantum interference device (SQUID). It is shown that a heat valve can be realized in a wide parameter range. We find a consistent relation between the heat current and quantum entanglement, which indicates the dominant role of entanglement on the heat valve. It provides an insightful understanding of quantum features in quantum heat machines.

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