2 added 32 characters in body
source | link

The relativity of simultaneity ensures that for non-causal events, the order in which they happen can depend on the reference frame you choose.

However, in the case of teleportation, if Bob measures inchooses the correct basisunitary transformation, then he can only do so having received classical information from Alice regarding the basis in which he must measureoutcome of Alice's measurement. These events are well ordered in all reference frames. Every frame sees Alice perform the measurement, send a signal to Bob and then Bob performs his measurementunitary in that order.

The problem with your way of looking at this is because the state's "arrival time" to Bob is not a well defined event. Somebody (either Alice or Bob) has to actually do a measurement/unitary transformation and then you have a well defined event that can be analyzed using any reference frame.

See also this related answer in the case of entanglement

The relativity of simultaneity ensures that for non-causal events, the order in which they happen can depend on the reference frame you choose.

However, in the case of teleportation, if Bob measures in the correct basis, then he can only do so having received classical information from Alice regarding the basis in which he must measure. These events are well ordered in all reference frames. Every frame sees Alice perform the measurement, send a signal to Bob and then Bob performs his measurement in that order.

The problem with your way of looking at this is because the state's "arrival time" to Bob is not a well defined event. Somebody (either Alice or Bob) has to actually do a measurement and then you have a well defined event that can be analyzed using any reference frame.

See also this related answer in the case of entanglement

The relativity of simultaneity ensures that for non-causal events, the order in which they happen can depend on the reference frame you choose.

However, in the case of teleportation, if Bob chooses the correct unitary transformation, then he can only do so having received classical information from Alice regarding the outcome of Alice's measurement. These events are well ordered in all reference frames. Every frame sees Alice perform the measurement, send a signal to Bob and then Bob performs his unitary in that order.

The problem with your way of looking at this is because the state's "arrival time" to Bob is not a well defined event. Somebody (either Alice or Bob) has to actually do a measurement/unitary transformation and then you have a well defined event that can be analyzed using any reference frame.

See also this related answer in the case of entanglement

1
source | link

The relativity of simultaneity ensures that for non-causal events, the order in which they happen can depend on the reference frame you choose.

However, in the case of teleportation, if Bob measures in the correct basis, then he can only do so having received classical information from Alice regarding the basis in which he must measure. These events are well ordered in all reference frames. Every frame sees Alice perform the measurement, send a signal to Bob and then Bob performs his measurement in that order.

The problem with your way of looking at this is because the state's "arrival time" to Bob is not a well defined event. Somebody (either Alice or Bob) has to actually do a measurement and then you have a well defined event that can be analyzed using any reference frame.

See also this related answer in the case of entanglement