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Joint CQSE and CASTS SEMINAR

Digital quantum simulator in the presence of a bath

Prof. Yi-Cong Zheng

2017 - 12 - 08 (Fri.)
14:30 - 15:30
716, CCMS & New Physics Building

 For a digital quantum simulator (DQS) imitating a target system, we ask the following question: Under what conditions is the simulator dynamics similar to that of the target in the presence of coupling to a bath? In this talk, we derive conditions for close simulation for three different physical regimes, replacing previous heuristic arguments on the subject with rigorous statements. In fact, we find that the conventional wisdom that the simulation cycle time should always be short for good simulation need not always hold up. Numerical simulations of two specific examples strengthen the evidence for our analysis and we go beyond to explore broader regimes.


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