An update on current quantum teleportation investigations has been provided by USTC researchers. The team have revealed where their research is at and what we can expect for the future of quantum technology and information.
Proposed in 1993, quantum teleportation has been named one of the most important protocols in the field of quantum information.
What is quantum teleportation, and what does it do?
As explained in their research, in practice, a single particle has many degrees of freedom, forming a complex quantum state.
Quantum teleportation of such states requires more complex entanglement preparation and Bell-state measurements.
According to the team, through entanglement distribution and Bell-state measurement, quantum teleportation enables the nonlocal transmission of an unknown quantum state, which has deepened the understanding of quantum entanglement.
Quantum teleportation can effectively overcome the distance limitation of direct transmission of quantum states in quantum communication
Quantum teleportation can effectively overcome the distance limitation of direct transmission of quantum states in quantum communication, as well as realise long-range interactions between different quantum bits in quantum computing.
Led by Academician Professor Guo Guangcan from the Chinese Academy of Sciences (CAS), the team includes Professor Hu Xiaomin, Professor Guo Yu, Professor Liu Biheng, and Professor Li Chuanfeng from the University of Science and Technology of China (USTC).
Under the leadership of Professor Liu Biheng and Professor Li Chuanfeng, the team has been at the forefront of experimental studies on high-dimensional teleportation and networks.
Quantum teleportation is key for quantum communication technology
Notable achievements from the team include the successful preparation of the world’s highest fidelity 32-dimensional quantum entanglement, the effective transmission of high-dimensional entanglement over 11 kilometres of optical fibre, and the development of efficient techniques for quantum entanglement detection.
Along with this, they have also made significant progress in areas such as high-dimensional quantum dense coding, high-dimensional quantum guidance, and high-dimensional teleportation.
Teleportation has advanced a lot in both theoretical research and experimental verification. It is currently at the critical stage from proof-of-principle to practical application.
The future of computing and the quantum internet
Quantum teleportation is vital to the operation of quantum computers.
Quantum computing uses subatomic particles, such as electrons or photons. Quantum bits, or qubits, allow these particles to exist in more than one state (i.e., 1 and 0) at the same time. For quantum computers, the manipulation of quantum information is of paramount importance.
Quantum teleportation may eventually assist in the development of a “quantum internet” that would function by transporting information between local quantum computers using quantum teleportation
