Events

David Bacco, Technical University of Denmark

In a society based on the continuous exchange of sensitive data and information, the importance of secure and trustable communications is essential. By exploiting principles of Quantum Physics, it is possible to share data in an unconditionally secure way, no longer based on mathematical assumptions of the encryption algorithm, but founded on the basic principles of Quantum Mechanics.

Academic Writing Workshop #2

Elisabeth van Stam (UW Writing and Communication Centre)

The best scientific writing is clear, concise and easily comprehended by its intended audience. Learn skills for writing in the sciences, including identifying and correcting common errors to write with precision and fluidity.

A separation between QNC⁰ and AC⁰

Previously, Bravyi, Gosset and Konig (Science 2018) showed a separation between constant depth quantum circuits and constant depth classical circuits with bounded fanin. We find a related problem which separates shallow classical and quantum circuits even if the classical circuit has unbounded fan-in AND gates. The problem is based on a technique borrowed from measurement based quantum computation which allows us to construct a cat state with Pauli errors in constant depth.

Meenu Kumari

Nonlocality is a useful quantum resource in applications such as quantum key distribution and quantum random number generation. We study nonlocality in a multi-qubit model—quantum kicked top (QKT). This system is of particular interest because it displays regular behavior, bifurcations and chaotic behavior in the classical limit, and is one of the few chaotic systems that has been experimentally realized.

Arne Laucht, University of New South Wales

A. Laucht,¹ C. H. Yang,¹R. C. C. Leon,¹J. C. C. Hwang,¹A. Saraiva,¹T. Tanttu,¹
W. Huang,¹J. Camirand Lemyre,²K. W. Chan,¹K. Y. Tan,¹F. E. Hudson,¹K. M. Itoh,³
A. Morello,¹M. Pioro-Ladrière,^2,4and A. S. Dzurak¹

Co-organized by the National Research Council of Canada 

The meeting brings together the Canadian community of scientists and engineers who perform research and development on spin-based quantum technologies. This will be the third annual workshop, with the main goal to foster spin qubit research and attract and train highly qualified personnel for the emerging quantum technologies sector in Canada.

Yichen Huang - Microsoft Research

We present two concrete examples where the Renyi rather than just the von Neumann entanglement entropy is necessary in order to obtain certain insights into quantum many-body systems.

David Reichmuth, Heriot-Watt University

One-out-of-two (1-2) oblivious transfer is a cryptographic primitive, in which a sender holds two bits, x0 and x1, and a receiver receives one of them, in such a way that the receiver does not know both bits, and the sender does not know which bit the receiver obtained. While information-theoretical security for quantum versions of such protocols is not possible, it is of interest to examine possible security bounds, which previous work has shown to be set at 0.749 in “complete” protocols employing pure symmetric states.

Engineering Effective Hamiltonians for Magnetic Resonance

Holger Haas

Optimising gates with a hybrid quantum-classical scheme

Hemant Katiyar