65 citations · 301 across the 33 of their papers we have counts for
4 papers · 1 filter
The ubiquitous problem of learning system parameters for dissipative two-level quantum systems: Fourier analysis versus Bayesian estimation
Sophie Schirmer, Frank Langbein
We compare the accuracy, precision and reliability of different methods for estimating key system parameters for two-level systems subject to Hamiltonian evolution and decoherence.…
Information Transfer Fidelity in Spin Networks and Ring-based Quantum Routers
Edmond Jonckheere, Frank Langbein, Sophie Schirmer
Spin networks are endowed with an Information Transfer Fidelity (ITF), which defines an absolute upper bound on the probability of transmission of an excitation from one spin to an…
Characterization and Control of Quantum Spin Chains and Rings
Sophie Schirmer, Frank Langbein
Information flow in quantum spin networks is considered. Two types of control -- temporal bang-bang switching control and control by varying spatial degrees of freedom -- are explo…
Quantum networks: Anti-core of spin chains
E. Jonckheere, F. C. Langbein, S. Schirmer
The purpose of this paper is to exhibit a quantum network phenomenon - the anti-core---that goes against the classical network concept of congestion core. Classical networks ideali…