Abstract
Recently we have shown that the thin spectrum associated with the process of spontaneous symmetry breaking will lead to a maximum coherence time for many‐particle solid state qubits. In this paper we will discuss how the general mechanism of dephasing caused by a thin spectrum can be applied to the case of BCS superconductors. We will find that the BCS superconducting state is a state of broken global U(1) symmetry, and that the thin spectrum associated with the breaking of this phase symmetry induces dephasing and decoherence within the fundamental timescale τ = 2πNℏ/kBT.
Original language | English |
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Pages (from-to) | 332-336 |
Journal | AIP Conference Proceedings |
Volume | 918 |
DOIs | |
Publication status | Published - 2007 |