2015/02/11 by M. Zhang, Mei Zhang, Tony E. Lee +1
Mathematics · Physics and Astronomy · #Computer science #Dephasing #Mathematics #Maxima and minima #Noise (video) #Physics #Quantum #Quantum algorithm #Quantum and electron transport phenomena #Quantum fluctuation #Quantum mechanics #Quantum noise #Quantum walk #Random walk #Spectroscopy and Quantum Chemical Studies #Statistical physics #cond-mat.other #quant-ph #stochastic dynamics and bifurcation
paper · pdf · doi:10.1103/physreva.91.052101
arxiv created 2015/02/11 · openalex publication_date 2015/05/04 · arxiv updated 2015/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In quantum systems, one usually seeks to minimize dephasing noise and disorder. The efficiency of transport in a quantum system is usually degraded by the presence of noise and disorder. However, it has been shown that the combination of the two can lead to significantly more efficiency than each by itself. Here, we consider how the addition of nonlocal noise, in the form of incoherent hopping, affects the transport efficiency. We show that incoherent hopping introduces additional local extrema in the efficiency function and investigate how the transport dynamics crosses over from a quantum random walk to a classical random walk.