Projects per year
Abstract
We discuss the concept and realization of a heat bath in solid state quantum systems. We demonstrate that, unlike a true resistor, a finite one-dimensional Josephson junction array or analogously a transmission line with non-vanishing frequency spacing, commonly considered as a reservoir of a quantum circuit, does not strictly qualify as a Caldeira–Leggett type dissipative environment. We then consider a set of quantum two-level systems as a bath, which can be realized as a collection of qubits. We show that only a dense and wide distribution of energies of the two-level systems can secure long Poincare recurrence times characteristic of a proper heat bath. An alternative for this bath is a collection of harmonic oscillators, for instance, in the form of superconducting resonators.
Original language | English |
---|---|
Article number | 429 |
Pages (from-to) | 1-8 |
Number of pages | 8 |
Journal | Entropy |
Volume | 26 |
Issue number | 5 |
DOIs | |
Publication status | Published - May 2024 |
MoE publication type | A1 Journal article-refereed |
Keywords
- heat bath
- Josephson array
- resistor
- resonator
- superconducting circuit
Fingerprint
Dive into the research topics of 'Heat Bath in a Quantum Circuit'. Together they form a unique fingerprint.-
THEPOW: Empowering quantum nanoelectronic devices using thermal energy
Pekola, J., Lemziakov, S., Lvov, D. & Karimi, B.
01/09/2022 → 31/08/2026
Project: Academy of Finland: Other research funding
-
QTF: Finnish Centre of Excellence in Quantum Technology
Pekola, J., Blanchet, F., Golubev, D., Maillet, O., Mannila, E., Senior, J. & Marín Suárez, M.
01/01/2018 → 31/12/2020
Project: Academy of Finland: Other research funding