Spinwave Engineering for Active Quantum Memories Program

Many significant goals in optical quantum information systems rely on being able to store and release photons on demand.  In other words, we need a quantum memory for photonic qubits.  One way to do this is to absorb optical qubits into ensembles of atoms.  Atomic absorption can, with careful control of the atoms, be made reversible and have a long storage time.  This idea is at the core of our basic optical quantum memory that has an efficiency of nearly 90% and storage time of 1 millisecond.  Beyond this passive memory, however, there are other exciting possibilities afforded the properties of the memory. When absorbed, photons are recorded as “spinwaves” in the atomic ensemble.  The goal of active spinwave engineering is to look for ways of manipulating quantum information while it is stored as a spinwave.  Through these investigations we aim to develop new ways to process optical quantum information. The Spinwave Engineering for Active Quantum Memories Program is led by A.Prof. Ben Buchler based at The Australian National University in Canberra.


Research insights from the Spinwave Engineering for Active Quantum Memories Program and the CQC2T team at Australian National University.


A. Prof. Ben C. Buchler

A. Prof. Ben C. Buchler

Work Package Leader
Mr. Aaron  Tranter

Mr. Aaron Tranter

PhD Student
 Anthony  Leung

Anthony Leung

PhD Student
Dr. Geoff  Campbell

Dr. Geoff Campbell

Research Fellow
Mr. Karun  Paul

Mr. Karun Paul

PhD Student

Featured publications

Radiation tolerance of two-dimensional material-based devices for space applications Tobias Vogl, Ben C. Buchler, Ping Koy Lam, et al. Nature Communications, 10, 1202 (2019)
Multiparameter optimisation of a magneto-optical trap using deep learning A. D. Tranter, H. J. Slatyer, M. R. Hush, A. C. Leung, J. L. Everett, K. V. Paul, P. Vernaz-Gris, P. K. Lam, B. C. Buchler & G. T. Campbell Nature Communications, 9, 4360 (2018)
Fabrication of ultrahigh-precision hemispherical mirrors for quantum-optics applications Daniel B. Higginbottom, Geoff T. Campbell, Gabriel Araneda, Fengzhou Fang, Yves Colombe, Ben C. Buchler & Ping Koy Lam Scientific Reports, Volume 8, Article number: 221 (2018)