Leakage power in semiconductor memories, such as Dynamic Random Access Memory (DRAM) and Static Random Access Memory (SRAM), can be substantial and is one of the limits for scalability of classical electronics. This is attributed to the fact that the information stored is volatile, requiring constant refreshing, as well as reprogramming upon powering off. Spin-transfer Torque (STT) Magnetic Random Access Memory (MRAM) has the potential to meet the speed and power consumption requirements of future memory applications. Here we apply knowledge of quantum transport to improve the performance of classical devices. The goal of this project is to identify a reliable solution tolerant to fabrication variances and limited read/write margins, and to effectively integrate STT-MRAM into the broad range of Complementary Metal Oxide Semiconductor (CMOS) based technology. We aim to establish a widely accessible process to integrate MRAM cells on post-CMOS integrated circuit chips. We will do this by creating magnesium oxide based tunnel junctions with low-resistance area product and high tunnel magnetoresistance and by investigating novel STT-RAM cell design. This project marks one of the first attempts to hybridize spintronics with semiconductor devices, thereby enabling a new route towards higher-performing electronics.
Entangled Photon Orbital Angular Momentum Arrays
Summary Arrays of orbital angular momentum (OAM) states of light are a new form of structured light so far relatively unexplored in quantum information science. Unlike spin angular momentum of light, which is related to light’s polarization and covers two dimensions, OAM states, sometimes described as ‘donut beams’ due to the shape of the field […]
September 19, 2019
Molecular Scale Magnetic Resonance Imaging
Through its phenomenal ability to image soft tissues, magnetic resonance imaging (MRI) has revolutionized both clinical medicine and research biomedicine.
September 9, 2016
Next Generation Quantum Sensors
We are developing new semiconductor p-n junctions and designing novel nanowire arrays that have the potential to significantly enhance the ability to detect light at the single photon level over an unprecedented wavelength range from the ultraviolet to infrared.
June 1, 2017
On-Chip Microwave-Optical Quantum Interface
Summary In this project we develop a quantum interface between microwave and optical photons as a key enabling technology of a hybrid quantum network. In such a network, the robust optical photons carry quantum information through optical fibres over long distances, while superconducting microwave circuits protected from thermal photon noise by the low temperature […]
October 29, 2018