  In this work, firstly, we propose how to experimentally demonstrate the
single photon steering phenomenon in a simple way. The quantum steering
phenomenon was discovered by Erwin Schrodinger, who reason that the laws of
quantum mechanics obliges us to admit that by suitable measurements taken on
one of two entangled system, then the state of the other system can be
determined and steered. On the other hand, the first proposal about the
nonlocal property of a single photon focus on showing the Bell nonlocality by
using the single-photon path entanglement. Here, we propose a new experimental
scheme that, by incorporating and manipulating the internal degree of freedom
(IDF) of the photon, easily demonstrate the nonlocal steering phenomenon of
single-photon's states. The experimental set-up that we propose differs from
those published in the quantum optics' literature to shown the single photon
nonlocality, which generally use the path entanglement of photons and homodyne
measurements. Secondly, by incorporating its IDF, we show that the single
photon steering and the quantum mechanical interaction-free measurement
(QM-IFM) are identical phenomena; we will argue that QM-IFM is just a
particular instance of the single-photon steering. In short, both the single
photon steering and QM-IFM (being identical phenomena) have a common cause: the
nonlocality of the wave function. In conclusion, we have demonstrated that it
is possible to produce a nonlocal phenomena by manipulating the single photon
internal degree of freedom. On the other hand, this unification between
steering and QM-IFM could establish a strong support to counterfactual quantum
communication and computation.
