There's quantum superdense coding, which in theory could allow higher bandwidth (transmitting one qbit can be used to transmit two classical bits) but I believe

There's quantum superdense coding, which in theory could allow higher bandwidth (transmitting one qbit can be used to transmit two classical bits) but I believe the main point of quantum channels is for cryptography. If entanglement allowed FTL communication you'd see high-frequency traders already using it!