New Protocol Shares Parameters Hidden in Strong Coupling

Researchers have proposed a solid-state electronic quantum dot device as a pathway to experimentally define three previously unknown parameters governing the behavior of a two-level system in strong coupling, a regime where a system intensely interacts with its environment. The work, led by Eugenia Pyurbeeva and Ronnie Kosloff of The Hebrew University of Jerusalem, employs a mathematically equivalent form of the GKLS master equation to arrive at an exact theoretical description of strong coupling, a long-sought goal in open quantum systems. This approach defines the behavior using “the analogue to the detailed balance relation, and two coupling strength constants” which are unknown outside of the weak coupling regime. The proposed device features a quantum dot, where electron flow is controlled by a side-gate voltage and a quantum point contact (QPC) located close…