Events

PhD Thesis Presentation

Candidate: Thomas McConkey

Supervisors, Matteo Mariantoni, Amir H. Majedi. On display in the Engineering graduate studies office, DWE 3520C. Oral defence Friday, June 1, 10:00 a.m., EIT 3142.

The number theory of quantum information

Jon Yard, IQC

Abstract: Quantum-mechanical amplitudes and unitaries are typically expressed over the complex numbers. Because there is a continuum of complex numbers, classical computations of quantum systems generally utilize finite-precision approximations by rational numbers.

PhD Thesis Presentation

Candidate: Dusan Sarenac

Supervisor: David Cory

On deposit in the Science graduate office, PHY 2013.
Oral defence Monday, June 4, 1:30 p.m., RAC 2009.

Juan Xu - Nanjing University of Aeronautics and Astronautics

Quantum secret sharing (QSS) mainly deals with the splitting and distributing of an arbitrary secret among n sharers using quantum resources. While quantum secret sharing schemes often use shared entangled states, it is also possible to define a notion of quantum secret sharing without the use of entangled states.

Surface Acoustic Waves in Quantum Systems

Mats Powlowski

​Surface acoustic waves (SAWs) are acoustic phonons that travel along the surface of a material and have been used for a wide variety of purposes, from RF filters to acoustic cavities to biosensors.

Brad Lackey, University of Maryland

A nonlocal game with a synchronous correlation is the ideal protocol for quantum key distribution. In this work we examine analogues of Bell's inequalities for synchronous correlations. We show that unlike in the nonsynchronous case (e.g. with the CHSH inequality) there can be no quantum Bell violation among synchronous correlations with two measurement settings. However we exhibit explicit analogues of Bell's inequalities for synchronous correlation with three measurement settings and two outputs that do admit quantum violations.

PhD Thesis Presentation

Candidate: Aimee Gunther

Konrad Banaszek - Centre of New Technologies, University of Warsaw

Quantum physics holds the promise of enhanced performance in metrology and sensing by exploiting non-classical phenomena such as multiparticle interference. Specific designs for quantum-enhanced schemes need to take into account noise and imperfections present in real-life implementations.

Dmitri Iouchtchenko

It has been suggested that placing dipolar linear rotors in one-dimensional lattices at zero temperature results in a model that has a transition between ordered and disordered phases. We use the density matrix renormalization group (DMRG) to compute ground states of this model near the critical point to provide further evidence of the phase transition. In particular, we numerically demonstrate divergences in both the entanglement entropy and the correlation length.

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PhD Thesis Presentation

Candidate: Chunhao Wang