Current students

Quantum error-correction in black holes

Beni Yoshida, Perimeter Institute

It is commonly believed that quantum information is not lost in a black hole. Instead, it is encoded into non-local degrees of freedom in some clever way; like a quantum error-correcting code. In this talk, I will discuss recent attempts to resolve some paradoxes in quantum gravity by using the theory of quantum error-correction.

Atomic scale study of Dirac materials: graphene and topological insulator (Bi2Se3)

Ying Liu

Graphene and topological insulator Bi2Se3 are newly discovered Dirac materials with exotic physical and electronic properties. The molecular beam epitaxy (MBE) and in situ characterization at atomic scale of the materials are demonstrated in this talk[1][2]. Artificial defects of graphene are created by Ar for extending its functions. Their structural, electronic properties and charge state were studied by scanning tunneling microscopy (STM) and q-plus atomic force microscopy (q-plus AFM ), respectively.

Quantum experiments exploiting the radiation pressure interaction between light and matter

Simon Gröblacher, Delft University of Technology

Mechanical oscillators coupled to light via the radiation pressure force have attracted significant attention over the past years for allowing tests of quantum physics with massive objects and for their potential use in quantum information processing. Recently demonstrated quantum experiments include entanglement and squeezing of both the mechanical and the optical mode.

Vincent Russo of the Department of Computer Science is defending his thesis:

Extended nonlocal games

Vincent is supervised by IQC faculty members John Watrous and Michele Mosca.

Extended Learning Graphs for Triangle Finding

Mathieu Lauriere, New York University, Shanghai

In this talk we present new quantum algorithms for Triangle Finding improving its best previously known quantum query complexities for both dense and spare instances. For dense graphs on n vertices, we get a query complexity of O(n^{5/4}) without any of the extra logarithmic factors present in the previous algorithm of Le Gall [FOCS’14]. For sparse graphs we also improve some of the results obtained by Le Gall and Nakajima [ISAAC’15].

Entanglement in a synthetic quantum magnet made of hundreds of trapped ions

Justin Bohnet, National Institute of Standards and Technology, Boulder

Entanglement between individual quantum objects exponentially increases the complexity of quantum many-body systems, such that models with more than 40 quantum bits cannot be fully studied using conventional techniques on classical computers. To make progress at this frontier of physics, Feynman’s pioneering ideas of quantum computation and quantum simulation are now being pursued in a wide variety of well-controlled platforms.

Research with very cold and ultra-cold neutrons at the Institute Laue Langevin in Grenoble

Peter Geltenbort, Institute Laue Langevin, Grenoble

Due to their outstanding property to be storable and hence observable for long periods of time (several hundreds of seconds) in suitable material or magnetic traps, ultra-cold neutrons (UCN) with energies around 100 neV are an unique tool to study fundamental properties of the free neutron, like its beta-decay lifetime, its electric dipole moment and its wave properties.

Informal conversation with Dr. Milena Grifoni, University of Regensburg

​Presented by: Fem Phys and Women in Science

​Join Fem Phys and Women in Science for an informal conversation with Dr. Milena Grifoni about her career in physics. Dr. Grifoni researches quantum transport in nanoscale systems and quantum dissipation at the University of Regensburg in Germany. Coffee and cookies will be provided. All are welcome. 

Airborne demonstration of a QKD payload receiver

Chris Pugh, IQC

We demonstrate the viability of components of a quantum receiver satellite payload by successfully performing quantum key distribution in an uplink configuration to an airplane. Each component has a clear path to flight for future satellite integration.

Short film festival + public lecture by Martin Laforest

Join us for a night of film and science. The Institute for Quantum Computing has partnered with the Centre for Quantum Technologies in Singapore to host a festival for quantum-inspired films. The screening of the top 10 short films will be followed by a lecture by Senior Manager, Scientific Outreach, Martin Laforest about the applications of quantum devices. He will delve into what we know quantum devices will be used for (that will affect everyone) and where researchers are hoping they will be used in the future.