Local versus global master equation with common and separate baths: superiority of the global approach in partial secular approximation

• Published in: New journal of physics Vol. 21; no. 11; pp. 113045 - 113067
• Main Authors: Cattaneo, Marco, Giorgi, Gian Luca, Maniscalco, Sabrina, Zambrini, Roberta
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.11.2019
• Subjects: Approximation; common and separate baths; coupled qubits; Coupling; Markovian master equation; Mathematical analysis; Open systems; Physics; Quantum entanglement; Quantum theory; Qubits (quantum computing); secular approximation; Synchronism; Validity

Open systems of coupled qubits are ubiquitous in quantum physics. Finding a suitable master equation to describe their dynamics is therefore a crucial task that must be addressed with utmost attention. In the recent past, many efforts have been made toward the possibility of employing local master e...