67 citations · 96 across the 16 of their papers we have counts for
16 papers
Long baseline optical interferometric imaging with active phase stabilization
Joshua J. Collier, Leuca Patmore, John S. Wallis +3
Astronomical observations allow us to better our understanding of the universe. As we observe smaller and more distance features, we run into the diffraction limit of our observati…
On-sky binary source hypothesis testing beyond the diffraction limit using spatial mode demultiplexing based detection
John S. Wallis, Ayden S. McCann, Joshua J. Collier +4
Improving the resolution of telescope systems will provide the opportunity to study new physical phenomena in previously unobserved environments. Spatial mode de-multiplexing (SPAD…
Relative Wavefront Error Correction Over a 2.4 km Free-Space Optical Link via Machine Learning
Nathan K. Long, Benjamin P. Dix-Matthews, Alex Frost +4
In coherent optical communication across turbulent atmospheric channels, reference beacons can be multiplexed with information-encoded signals during transmission. In this case, it…
Rapidly Tunable Synthetic Wavelength Ranging with an RFSoC
Shawn M. P. McSorley, Benjamin P. Dix-Matthews, Andrew M. Lance +2
Measurements of optical range and time-of-flight are crucial for a variety of high-precision technologies. Competitive optical measurement techniques have been developed that balan…
Commissioning of the TeraNet Optical Ground Station Network
Sascha Schediwy, Aliesha Aden, Benjamin Dix-Matthews +13
TeraNet is a new three-node OGS network that has been established in Western Australia. The network is built to support a broad range of space missions operating between LEO and th…
Super resolving binary-source hypothesis testing with a double-clad fiber coupler
John S. Wallis, David R. Gozzard, Alex M. Frost +3
We present a technique for binary spatial mode demultiplexing, using a double-clad fiber coupler as an optical mode sorter, for hypothesis testing for one or two point sources in a…
Phase stabilization for long baseline interferometry of incoherent optical sources
Joshua J. Collier, David R. Gozzard, John S. Wallis +1
The maximum baseline, and therefore resolution, of optical astronomical interferometers is limited by attenuation and phase noise within the optical path between the apertures and…
Uplink Pre-Compensation for Ground-to-Space Optical Communications Using Downlink Tomographic Reconstruction
Alex Frost, Nicolas Maron, Shane Walsh +3
Uplink pre-compensation in ground-to-satellite optical links remains a problem, with an appropriate measurement of the wavefront error in the uplink path often not being available.…
Quantum Wavefront Correction via Machine Learning for Satellite-to-Earth CV-QKD
Nathan K. Long, Ziqing Wang, Benjamin P. Dix-Matthews +4
State-of-the-art free-space continuous-variable quantum key distribution (CV-QKD) protocols use phase reference pulses to modulate the wavefront of a real local oscillator at the r…
Relative Wavefront Errors in Continuous-Variable Quantum Communication
Nathan K. Long, John Wallis, Alex Frost +4
When undertaking continuous-variable quantum key distribution (CV-QKD) across atmospheric channels, strong classical local oscillators (LOs) are often polarization-multiplexed with…
Optimal design of small aperture optical terminals for free-space links
Alex M. Frost, Benjamin P. Dix-Matthews, Shane M. Walsh +2
We present the generalised design of low-complexity, small aperture optical terminals intended for kilometre-scale, terrestrial, free-space laser links between fixed and dynamic ta…
Free Space Optical Frequency Comparison Over Rapidly Moving Links
Shawn M. P. McSorley, Benjamin P. Dix-Matthews, Alex M. Frost +5
The comparison of optical reference frequency signals over free-space optical links is limited by the relative motion between local and remote sites. For ground to low earth orbit…
The Western Australian Optical Ground Station
Shane Walsh, Alex Frost, William Anderson +8
Free-space communications at optical wavelengths offers the potential for orders-of-magnitude improvement in data rates over conventional radio wavelengths, and this will be needed…
Ultra-stable Free-Space Laser Links for a Global Network of Optical Atomic Clocks
David R. Gozzard, Lewis A. Howard, Benjamin P. Dix-Matthews +3
A global network of optical atomic clocks will enable unprecedented measurement precision in fields including tests of fundamental physics, dark matter searches, geodesy, and navig…
Ultra-wideband free-space optical phase stabilisation
Benjamin P. Dix-Matthews, David R. Gozzard, Skevos F. E. Karpathakis +2
Free-space optical (FSO) communications has the potential to revolutionize wireless communications due to its advantages of inherent security, high-directionality, high available b…
Methods for coherent optical Doppler orbitography
Benjamin P. Dix-Matthews, Sascha W. Schediwy, David R. Gozzard +4
Doppler orbitography uses the Doppler shift in a transmitted signal to determine the orbital parameters of satellites including range and range-rate (or radial velocity). We descri…