The interaction of a quantum system with its environment is of fundamental importance for the development of quantum technologies. The spin-boson model in which a spin degree of freedom couples to a continuum of harmonic oscillators is one of the most fundamental models in this area. A continuum of harmonic oscillators is not easy to treat numerically and ideally one would like to reduce them to a finite number of harmonic oscillators, i.e. to discretize the harmonic environment. This will make us to commit errors that we need to bound. Our work uses a chain mapping that we had developed earlier together with Lieb-Robinson type methods which limit the speed at which perturbation travel through such chains to develop such error bounds.
- ITP and the Center of QuantumBioSciences is part of newly approved Collaborative Research Center 1279
- The work of the Institute was mentioned in The Economist
- Congratulations to Jorge Casanova for winning a “Forschungsbonus”!
- Summer BBQ
- The paper “Ultrasensitive magnetometer using a single atom” was selected as a PRL EDITORS’ SUGGESTION
Most Recent Papers
•Stochastic unraveling of positive quantum dynamics, Physical Review A, 95, 062101 (2017)
•Dissipatively Stabilized Quantum Sensor Based on Indirect Nuclear-Nuclear Interactions, Physical Review Letters, 119, 010801 (2017)
• Steady-state preparation of long-lived nuclear spin singlet pairs at room temperature , Physical Review B, 95, 224105 (2017)
Institute of Theoretical Physics
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