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Mr. Rohit Navarathna

Rohit Navarathna completed his MSc in Physics from the Birla Institute of Technology and Science, Pilani. His masters thesis titled "3D Supercondcting Transmon Qubit" was at a superconducting devices lab in the Indian Institute of Science, Bangalore.
The thesis was intriguing enough that he continued to work in this lab for another year fabricating and testing transmon and Josephson Parametric devices. In October 2018, he joined SQDLab as a PhD student to continue learning about superconducting quantum circuits.

2021

Operating a passive on-chip superconducting circulator: Device control and quasiparticle effects
Thanh Le Dat et al, 2021
Phys. Rev. Research, 3, 043211

Microwave circulators play an important role in quantum technology based on superconducting circuits. The conventional circulator design, which employs ferrite materials, is bulky and involves strong magnetic fields, rendering it unsuitable for integration on superconducting chips.
Neural networks for on-the-fly single-shot state classification
Navarathna Rohit et al, 2021
Applied Physics Letters

Neural networks have proven to be efficient for a number of practical applications ranging from image recognition to identifying phase transitions in quantum physics models.

2020

Measuring effective temperatures of qubits using correlations
Kulikov A, Navarathna R and Fedorov A, 2020
Phys. Rev. Lett., 124, pp. 240501

Initialization of a qubit in a pure state is a prerequisite for quantum computer operation. Qubits are commonly initialized by cooling to their ground states through passive thermalization or by using active reset protocols.