Quantum Communication Theory Program

Quantum Communication is the transmission of information via the coherent exchange of quantum systems, usually optical. Its study has led to new communication technologies, for example quantum key distribution, a secure communication technique with no classical analogue.

The Quantum Communication Theory Program, led by Prof Tim Ralph from the University of Queensland, studies a broad range of issues associated with quantum communication and fundamental aspects of quantum information and metrology. We are particularly concerned with the scaling up of short to long range communication through the development of quantum repeaters and related technology. We collaborate with several groups on demonstrating key technologies.

People

Prof. Tim C Ralph

Prof. Tim C Ralph

Program Manager
Ms. Estelle  Asmodelle

Ms. Estelle Asmodelle

PhD Student
Ms. Josephine  Dias

Ms. Josephine Dias

PhD Student
Mr. Joshua  Foo

Mr. Joshua Foo

PhD Student
Mr. Marco  Ho

Mr. Marco Ho

PhD Student
Mr. Matthew  Winnell

Mr. Matthew Winnell

PhD Student
Mr. Sebastian  Kish

Mr. Sebastian Kish

PhD Student
Mr. Sho  Onoe

Mr. Sho Onoe

PhD Student
Mr. Spyros  Tserkis

Mr. Spyros Tserkis

PhD Student

Featured Publications

Quantum correlations and global coherence in distributed quantum computing F Shahandeh, AP Lund, TC Ralph Physical Review A, 99, 052303 (2019)
Correlations detected in a quantum vacuum Andrey S. Moskalenko & Timothy C Ralph Nature, 568, 178-179 (2019)
Large-scale silicon quantum photonics implementing arbitrary two-qubit processing X Qiang, X Zhou, J Wang, CM Wilkes, T Loke, S O’Gara, L Kling, GD Marshall, R Santagati, TC Ralph, JB Wang, JL O’Brien, MG Thompson, JCF Matthews Nature Photonics, 12, 534 (2018)
Space QUEST mission proposal: experimentally testing decoherence due to gravity S Joshi, J Pienaar, TC Ralph, et. al.
New Journal of Physics, 20, 63016 (2018)
Quantum error correction of continuous-variable states with realistic resources Josephine Dias and T. C. Ralph Phys. Rev. A, 97, 032335 (2018)
Passive quantum error correction of linear optics networks through error averaging Ryan J. Marshman, Austin P. Lund, Peter P. Rohde, and Timothy C. Ralph Phys. Rev. A, 97, 022324 (2018)
Simulation of Gaussian channels via teleportation and error correction of Gaussian states S Tserkis, J Dias, TC Ralph
Phys. Rev. A , 98, 052335 (2018)
Particle production and apparent decoherence due to an accelerated time delay S Onoe, D Su, TC Ralph Phys. Rev. D, 98, 036011 (2018)
Generation of a Cat State in an Optical Sideband T Serikawa, J Yoshikawa, S Takeda, H Yonezawa, TC Ralph, EH Huntington, A Furusawa
Phys. Rev. Lett. , 121, 143602 (2018)
Violation of Bell’s Inequality Using Continuous Variable Measurements O Thearle, J Janousek, S Armstrong, S Hosseini, M Schünemann, S Assad, T Symul, MR. James, E Huntington, TC Ralph, PK Lam
Phys. Rev. Lett., 120, 040406 (2018)

News

Making light work of quantum computing

21/08/2018 In The Media