  The present work is motivated by the question as to what aspect of
correlation entailed by the two-qubit state serves as the appropriate
quantitative resource for steering. To this end, considering Bell-diagonal
states, suitable measures of simultaneous correlations in two and three
complementary (mutually unbiased) bases are identified as the relevant
resources for quantum steering. Quantitative relations between appropriate
measures of quantum steering and the corresponding measures of simultaneous
correlations in complementary bases are demonstrated which ensure that for two
qubit steerable Bell-diagonal states, higher value of simultaneous correlations
in mutually unbiased bases necessarily implies higher degree of quantum
steering, both for two and three setting steering scenarios.
