Phonon-Induced Dephasing of Singlet-Triplet Superpositions in Double Quantum Dots Without Spin-Orbit Coupling

Abstract

We show that singlet-triplet superpositions of two-electron spin states in a double quantum dot undergo a phonon-induced pure dephasing which relies only on the tunnel coupling between the dots and on the Pauli-exclusion principle.

Keywords

• Phonon-Induced
• Dephasing
• Singlet-Triplet
• Superpositions
• Double
• Quantum
• Dots
• Without
• Spin-Orbit
• Coupling