3 papers
quant-ph2022
Move aside pentacene: Diazapentacene doped para-terphenyl as a zero-field room-temperature maser with strong coupling for cavity quantum electrodynamics
Wern Ng, Xiaotian Xu, Max Attwood +4
Masers, the microwave analogue of lasers, promise to deliver ultra-low noise amplification of microwave signals for use in medical MRI imaging and deep-space communication. Researc…
quant-ph2021
Bench-top Cooling of a Microwave Mode using an Optically Pumped Spin Refrigerator
Hao Wu, Shamil Mirkhanov, Wern Ng +1
We experimentally demonstrate the temporary removal of thermal photons from a microwave mode at 1.45 GHz through its interaction with the spin-polarized triplet states of photo-exc…
physics.app-ph2020
Room-temperature quasi-continuous-wave pentacene maser pumped by an invasive Ce:YAG luminescent concentrator
Hao Wu, Xiangyu Xie, Wern Ng +4
We present in this work a quasi-continuous-wave (CW) pentacene maser operating at 1.45 GHz in the Earth's magnetic field at room temperature with a duration of 4 ms and an ou…