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August 2021

MQCQE seminar by Dr Andre Saraiva (UNSW) : SMART Dressing for Spins in a Global Field

August 19, 2021 @ 1:00 pm - 2:00 pm

Title: SMART Dressingfor Spins in a Global Field Abstract:Spins are quintessential qubits -- a natural two-level system with longcoherence times and a small footprint in solid-state devices. However, movingfrom few qubit demonstrations to full scale processors creates a demand forrethinking the way these qubits are designed. Firstly, we will expose thechallenges for spin-based qubit scalability, particularly in the context ofsilicon quantum dots. An architecture that remedies many of these challengeswill then be explained, where qubits are set not by the…

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QSI Seminar: Zhicheng Zhang, UCAS, Beijing

August 19, 2021 @ 11:00 am - 12:00 pm

TITLE: Parallel Quantum Algorithm for Hamiltonian Simulation SPEAKER: Zhicheng Zhang AFFILIATION: University of Chinese Academy of Sciences, Beijing, China ABSTRACT: We study how parallelism can speed up quantum simulation. A parallel quantum algorithm is proposed for simulating the dynamics of a large class of Hamiltonians with good sparse structures, called uniform-structured Hamiltonians, including various Hamiltonians of practical interest like local Hamiltonians and Pauli sums. Given the oracle access to the target sparse Hamiltonian, in both query and gate complexity, the…

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May 2021

UTS QSI Seminar: Richard Kueng, Johannes Kepler University Linz

May 27, 2021 @ 1:00 pm - 5:00 pm

QSI Seminar: Richard Kueng, Johannes Kepler University Linz | University of Technology Sydney (uts.edu.au) Hosted by: Dr Mária Kieferová, Centre for Quantum Software and Information, University of Technology Sydney, Australia Title: tba Research topic: Quantum algorithms/QML/Tomography Speaker: Richard Kueng, Johannes Kepler University Linz, Austria Abstract: tba Time: tba  

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CQC2T Online Seminar

May 25, 2021 @ 2:00 pm - 3:00 pm

Fortnightly CQC2T Online Seminar Series Speaker: Details to be confirmed

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QSI Seminar: Martin Plávala, Universität Siegen, Germany

May 13, 2021 @ 4:00 pm - 5:00 pm

QSI Seminar: Martin Plávala, Universität Siegen, Germany | University of Technology Sydney (uts.edu.au) Hosted by: Dr Mária Kieferová, Centre for Quantum Software and Information, University of Technology Sydney, Australia Title: Jordan products of quantum channels and their compatibility Speaker: Dr Martin Plávala, Universität Siegen, Germany Given two quantum channels, we examine the task of determining whether they are compatible - meaning that one can perform both channels simultaneously but, in the future, choose exactly one channel whose output is desired…

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April 2021

ANU Colloquium: Strong Coulomb interactions in silicon quantum dot qubits

April 22, 2021 @ 11:00 am - 12:00 pm

This talk will discuss how quantum dot qubits in silicon/silicon-germanium heterostructures are affected by the nontrivial interplay between Coulomb interactions and the valley degree of freedom.

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November 2020

CQC2T Online Seminar: Deterministic Single Ion Implantation with 99.87% Confidence for Scalable Donor-Qubit Arrays in Silicon –  Alexander Jakob UM

November 24, 2020 @ 2:00 pm - 3:00 pm

Speaker: Alexander Jakob, University of Melbourne Host: TBC Date/ Time: Tuesday, 24 November 2020, 2pm AEDT (1pm QLD) Presentation: Deterministic Single Ion Implantation with 99.87% Confidence for Scalable Donor-Qubit Arrays in Silicon The attributes of group-V-donor spins implanted in an isotopically purified 28Si crystal make them attractive qubits for large-scale quantum computer devices. Important features include long nuclear and electron spin lifetimes of 31P, hyperfine clock transitions in 209Bi and electrically controllable 123Sb nuclear spins. However, architectures for scalable quantum devices require the ability to…

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CQC2T Online Seminar: Modular Bosonic Subsystem Codes – Giacomo Pantaleoni, RMIT

November 10, 2020 @ 2:00 pm - 3:00 pm
Online

Speaker: Giacomo Pantaleoni, RMIT University Host: TBC Research Overview: Modular Bosonic Subsystem Codes We introduce a framework to decompose a bosonic mode into two virtual subsystems—a logical qubit and a gauge mode. This framework allows the entire toolkit of qubit-based quantum information to be applied in the continuous-variable setting. We give a detailed example based on a modular decomposition of the position basis and apply it in two situations. First, we decompose Gottesman-Kitaev-Preskill grid states and find that the encoded…

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October 2020

CQC2T Online Seminar: Imaging ultrathin van der Waals magnets with a quantum diamond microscope – Jean-Philippe Tetienne

October 27, 2020 @ 2:00 pm - 3:00 pm

Speaker: Jean-Philippe Tetienne, University of Melbourne Research Overview: Imaging ultrathin van der Waals magnets with a quantum diamond microscope The recent isolation of 2D van der Waals magnetic materials has uncovered rich physics that often differs from the magnetic behavior of their bulk counterparts. However, the microscopic details of fundamental processes such as the initial magnetization or domain reversal, which govern the magnetic hysteresis, remain largely unknown in the ultrathin limit. Here a widefield nitrogen‐vacancy (NV) microscope is employed to…

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UNSW Physics Student Seminar – Matt Donnelly

October 23, 2020 @ 10:30 am - 11:00 am

Matt Donnelly Three Dimensional Monolithic Control of Atomic-Scale Devices in Silicon The spin of an electron bound to a phosphorus donor in silicon (Si:P) is a prototypical two-level quantum system proposed as a qubit for quantum computing. Fundamental operations (initialisation, read-out with single qubit and two qubit gates) required for using this system for quantum information processing have been demonstrated in the past decade, with attention now turning towards how to scale up this system to the large arrays needed…

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CQC2T Online Seminar: Exploiting a Single‐Crystal Environment to Minimize the Charge Noise on Qubits in Silicon – Ludwik Kranz

October 13, 2020 @ 2:00 pm - 3:00 pm

Speaker: Ludwik Kranz, UNSW Sydney Research Overview: Exploiting a Single‐Crystal Environment to Minimize the Charge Noise on Qubits in Silicon

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September 2020

CQC2T Online Seminar: Speakers Ruvi Lecamwasam and Hao Jeng – ANU

September 29, 2020 @ 2:00 pm - 3:00 pm

In this seminar we will hear from two of our PhD students - Ruvi Lecamwasam and Hao Jeng - from ANU presenting their latest research. Research Overview: How your choice of measurement basis bounds estimator error - answers using entropy and circular statistics Speaker: Ruvi Lecamwasam, ANU Research overview: Teleporting coherent states of photons with reduced decoherence Speaker: Hao Jeng, ANU Abstract: Quantum teleportation of a coherent state causes it to evolve from a superposition of Fock states into a statistical…

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