PhD Candidate: Hemant Katiyar
Join us for this week's IQC Student Seminar, featuring surprise speakers and a pizza lunch.
In a non-local game, two or more non-communicating, but entangled, players cooperatively try to win a game consisting of a one-round interaction with a classical referee. In this talk, I will describe a two-player non-local game with the property that an epsilon-close to optimal strategy requires the players to share an entangled state of dimension 2^{1/poly(epsilon)}.
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.
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.
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.
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.
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.
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.