  According to Schr\"odinger, the laws of quantum mechanics obliges us to admit
that by suitable measurement taken on one of the two system only1 the state of
the other system can not only be determined but steered too. That is, it
conveys the potential ability to steer the state of another physical system
without interacting with it by implementing independent measurements, this
nonlocal phenomenon was named steering. On the other hand, the first proposals
about the nonlocality of a single photon focus on showing the Bell nonlocality
by using a single photon path entanglement. This path entanglement of a single
photon was also used for analyzing and experimentally produce the steering of a
single photon. However, these established facts have been recently called into
question suggesting that single-photon entanglement is not non-local. In this
letter, we show that by incorporating and manipulating the internal degrees of
freedom of the photon, together with the external path, it is easy to
demonstrate the nonlocal effect of steering of a single photon's state. In this
sense, the experimental set-up that we propose differs from the one reported in
the quantum optics literature which only uses, to the best of our knowledge,
the path entanglement of photons for showing the steering phenomenon, i.e. here
we exploit the entanglement between the internal and external degrees of
freedom of the photon to show this nonlocal effect. The introduction of the
photon's internal degrees of freedom in the experimental set-up gives us new
insight, advantages and possibilities to control the nonlocal character of the
single-photon entangled state.
