Rostock 2019 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 56: Quantum Optics III
Q 56.3: Talk
Thursday, March 14, 2019, 14:45–15:00, S Ex 04 E-Tech
Simulating open quantum systems using quantum Zeno dynamics — •Sabrina Patsch1, Sabrina Maniscalco2, and Christiane P. Koch1 — 1Theoretical Physics, University of Kassel, Germany — 2Turku Centre for Quantum Physics, University of Turku, Finland
A watched quantum arrow does not move. This effect, referred to as the quantum Zeno effect, arises from a frequent measurement of a quantum system’s state. In more general terms, the evolution of the quantum system can be confined to a subspace of the system’s Hilbert space leading to quantum Zeno dynamics. Resulting from the measurement process, a source of dissipation is introduced into the systems dynamics. However, differently from a generic open quantum system, we can choose the strength of the dissipation by changing the parameters of the Zeno measurement.
We capitalise on the property of tunable dissipation to create a quantum simulator for open quantum systems and derive a Lindblad master equation to describe the evolution of the open system. Moreover, we extend the picture to enable also non-Markovian evolution. The considered quantum system are photons inside a cavity being subject to an indirect measurement using circular Rydberg atoms.