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The Quantum Horizons: Quantum Information Science (QIS) Research and Innovation for Nuclear Science award from the U.S. Department of Energy's Office of Nuclear Physics has enabled a new collaboration between researchers who develop technologies for nuclear physics, quantum information science and high-energy physics. 

Yesterday, the Institute for Quantum Computing (IQC) held its first Colloquium of 2023, including an opportunity to connect to our community with pre-presentation coffee and tea, and a fantastic presentation featuring Dr. Stephanie Simmons titled Silicon Colour Centres.

Events

Avenues focusing reference frame independent protocols to enhance free space satellite quantum communications channels

Free-space quantum channels for real world quantum information applications are rapidly emerging, with Canada developing the quantum encryption and science satellite (QEYSSat). For polarization-based systems, one challenge is aligning the reference frame of the polarization states. For example, the physical orientation of the satellites is crucial in maintaining the proper geometric reference frame alignment. However, reference frame independent (RFI) protocols overcome this issue because they don’t require all the polarization states to be fixed. Furthermore, using time bin encoding completely removes the need for a geometric reference, but presents its own challenges when used over a free space channel. In this talk, we will discuss the development done at the University of Waterloo towards the use of reference frame independent protocols for free-space quantum channels. Furthermore, we will discuss the benefits of using time bin encoding over free-space channels, and present our implementations of such systems and what they mean for future QEYSSat missions and applications on other platforms.

 

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Monday, February 27, 2023 2:30 pm - 3:30 pm EST

Spin Qubits in Semiconductors: Current Status and Future Directions

IQC Colloquium featuring Xuedong Hu Department of Physics, University at Buffalo, SUNY

Research on the physical implementation of quantum computing has made dramatic progress over the past decade, spearheaded by superconducting qubits and trapped ion qubits, to the degree that small-scale quantum information processors are now within reach. Studies of semiconductor spin qubits, which have often been considered one of the most promising in the long term from the perspective of scalability, have also yielded some important results in the past decade, demonstrating exceptional coherence properties for single spins confined in quantum dots and donors and high-fidelity single-qubit gates. ...

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