Bosonic channels refer to communication channels that involve the transmission of bosonic, or integer spin, particles such as photons or phonons. These channels are important in quantum communication and quantum information processing, as they are used to transmit quantum information between different quantum systems. Researchers study bosonic channels to understand their properties, limitations, and potential applications in quantum technologies such as quantum cryptography, quantum teleportation, and quantum computing. Key research areas in bosonic channels include quantum error correction, channel capacity, noise modeling, and optimization of quantum communication protocols.