  Based on two-photon entanglement, quantum remote sensing enables the
measurement and detection to be done non-locally and remotely. However, little
attention has been paid to implement a noncontact way to sense a real objects
angular rotation, which is a key step towards the practical applications of
precise measurements with entangled twisted photons. Here, we use photon pairs
entangled in orbital angular momentum (OAM) to show that a real object's
angular rotation can be measured non-locally. Our experiment reveals that the
angular sensitivity of the object encoded with idler photons is proportional to
the measured OAM values of signal photons. It suggests potential applications
in developing a noncontact way for angle remote sensing of an object with
customized measurement resolution. Moreover, this feature may provide potential
application in sensing of some light-sensitive specimens when the entangled
photon pairs, which have significantly different wavelengths, are used, such as
one photon is infrared but the other one is visible.
