Glassy disorder in the coin of a 1D discrete-time quantum walk inhibits ballistic spread while keeping it faster than classical diffusion, with slow or fast falloff and mid-strength inflection points depending on the disorder distribution.
Romanelli, The fibonacci quantum walk and its classical trace map, Physica A 388, 3985 (2009)
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Response to glassy disorder in coin on spread of quantum walker
Glassy disorder in the coin of a 1D discrete-time quantum walk inhibits ballistic spread while keeping it faster than classical diffusion, with slow or fast falloff and mid-strength inflection points depending on the disorder distribution.