53 citations · 118 across the 10 of their papers we have counts for
10 papers
Structural disorder and critical voltage scaling in Al/AlOx/Al Josephson junction arrays
Amanuel M. Berhane, Susan Coppersmith, Emma Mitchell +1
The insulating state of one-dimensional Josephson junction (JJ) arrays is governed by collective charge dynamics and disorder-induced pinning, resulting in a finite critical voltag…
Direct writing of high temperature superconducting Josephson junctions using a thermal scanning probe
Ngoc My Hanh Duong, Amanuel M. Berhane, Dave Mitchell +7
In this letter, we demonstrate for the first time the creation of Josephson-like superconducting nanojunctions using a thermal scanning probe to directly inscribe weak links into m…
Phase transformation-induced superconducting aluminium-silicon alloy rings
B. C. Johnson, M. Stuiber, D. L. Creedon +8
The development of a materials platform that exhibits both superconducting and semiconducting properties is an important endeavour for a range of emerging quantum technologies. We…
Photophysics of GaN single photon sources in the visible spectral range
Amanuel M. Berhane, Kwang-Yong Jeong, Carlo Bradac +4
In this work, we present a detailed photophysical analysis of recently-discovered optically stable, single photon emitters (SPEs) in Gallium Nitride (GaN). Temperature-resolved pho…
Room-temperature solid state quantum emitters in the telecom range
Yu Zhou, Ziyu Wang, Abdullah Rasmita +7
On demand single photon emitters (SPEs) play a key role across a broad range of quantum technologies, including quantum computation, quantum simulation, quantum metrology and quant…
Photo-induced blinking in a solid state quantum system
Amanuel M. Berhane, Carlo Bradac, Igor Aharonovich
Solid state single photon emitters (SPEs) are one of the prime components of many quantum nanophotonics devices. In this work, we report on an unusual, photo-induced blinking pheno…
Bright Room-Temperature Single Photon Emission from Defects in Gallium Nitride
Amanuel M. Berhane, Kwang-Yong Jeong, Zoltán Bodrog +8
Single photon emitters play a central role in many photonic quantum technologies. A promising class of single photon emitters consists of atomic color centers in wide-bandgap cryst…
Quantum Emission from Defects in Single Crystal Hexagonal Boron Nitride
Toan Trong Tran, Cameron Zachreson, Amanuel Michael Berhane +7
Bulk hexagonal boron nitride (hBN) is a highly nonlinear natural hyperbolic material that attracts major attention in modern nanophotonics applications. However, studies of its opt…
Electrical excitation of silicon-vacancy centers in single crystal diamond
Amanuel M. Berhane, Sumin Choi, Hiromitsu Kato +4
Electrically driven emission from negatively charged silicon-vacancy, (SiV)- centres in single crystal diamond is demonstrated. The SiV centres were generated using ion implantatio…
Electroluminescence from isolated defects in zinc oxide, towards electrically triggered single photon sources at room temperature
Sumin Choi, Amanuel M. Berhane, Angus Gentle +3
Single photon sources are required for a wide range of applications in quantum information science, quantum cryptography and quantum communications. However, so far majority of roo…