That’s not really transmitting any useful information though. If you know the distance between the sender and receiver, and the nature of the intervening medium, then you already know when the photon arrives, by simple arithmetic.
Besides, quantum teleportation is not really about sending the photon somewhere; it only comes into play once the photons are already in place in two locations. You only send the entangled photon a single time, and after that, you can perform the operations to achieve the quantum teleportation.
Once they’re in place, you could then tell if someone performed an operation on the other photon, but that’s the only superluminal information you might be able to get. You couldn’t tell specifically what operation was performed unless there are accompanying subluminal transmissions to provide you with the missing information you need.
For the purpose intended, finding objects otherwise not readily detected with incoherent visible light, or radar, or similar frequencies, knowing ‘it’s there’ or ‘it’s not there’ is all the information you need. ‘it’s there’ means nothing happened ~ but if ‘it’s not there’ you have a different situation entirely. Now do that a million times a second with gazillions of split photons.
Hence the conclusion that it can't be used for purposes of communication, or the sending of information of any kind ~ or even for sending negative-information of nothing at all.
That does not mean we can't get around those limitations eventually. Scientific observation of aggregations/groups of entangled photons is a really new field and few can begin to guess what that will lead to.
As early as 1990 AT&T was working on using entanglement to assist in protecting encrypted messages. Last time I looked at that they'd overcome many hurdles ~ but the big idea was that sometimes no information is the answer.
My understanding is that entanglement can't be used for communication since the process presumably of interest to us is instantaneous and since nothing can exceed the speed of light, then it doesn't really exist, or it's a misunderstanding, or all sorts of other reasons why somebody doesn't want it to be of use.
I do believe research into entanglement has advanced way beyond that. But the top dogs aren't talking!
Some of us are old enough to remember how laser research and technology went underground for more than 20 years. Just flat out disappeared.