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Monday, April 10, 2017 2:30 pm - 2:30 pm EDT (GMT -04:00)

Colloquium: Muxin Han

Quantum Gravity, Tensor Network, and Holographic Entanglement Entropy

Muxin Han, Florida Atlantic University

The relation between nonperturbative Quantum Gravity and tensor network is explored from the perspectives of bulk-boundary duality and holographic entanglement entropy. We find that the quantum gravity states in a space Σ with boundary ∂Σ is an exact holographic mapping. The tensor network, understood as the boundary quantum state, is the output of the exact holographic mapping emerging from a coarse graining procedure of quantum gravity state.

Monday, April 17, 2017 2:30 pm - 2:30 pm EDT (GMT -04:00)

Colloquium: Peter Maunz

Scalable surface ion traps for high-fidelity quantum operations

Peter Maunz, Sandia National Laboratories

Trapped ion systems can be used to implement quantum computation as well as quantum simulation. To scale these systems to the number of qubits required to solve interesting problems in quantum chemistry or solid state physics, the use of large multi-zone ion traps has been proposed [1]. Microfabrication enables the realization of surface electrode ion traps with complex electrode structures.

Thursday, April 20, 2017 11:00 am - 11:00 am EDT (GMT -04:00)

Special seminar: John Jeffers

Quantum Technology: Theory Research at Strathclyde

John Jeffers, University of Strathclyde

I will provide a short overview of the UK national Quantum Technology Hubs and the theoretical involvement at Strathclyde in two Hubs: the Quantum Communications Hub and the Quantum Imaging Hub.
    

Marco Piani
Thursday, April 20, 2017 11:30 am - 11:30 am EDT (GMT -04:00)

Special seminar: Marco Piani

Operational characterization of quantum properties

Marco Piani, University of Strathclyde

 Quantum features like quantum superposition and quantum correlations — the latter comprising, but not limited to entanglement — are both of foundational and applicative interest. We develop tools to characterize such features operationally, looking for ways to detect, quantify, and utilize them. Some recent results I will report on regard the use of such features in the discrimination of physical processes, a task within the area of quantum metrology.

Thursday, April 20, 2017 2:30 pm - 2:30 pm EDT (GMT -04:00)

Special seminar: Rajibul Islam

Quantum simulation with laser-cooled trapped ions

Rajibul Islam, Institute for Quantum Computing

Laser-cooled trapped ions are among the most versatile experimental platforms for the simulation of non-trivial quantum Hamiltonians. What distinguishes this platform from others is the extent to which it is experimentally possible to control this system at the level of individual particles and interactions between them.

Thursday, April 20, 2017 3:00 pm - 3:00 pm EDT (GMT -04:00)

Special seminar: Andrew Daley

Out-of-equilibrium dynamics in AMO quantum simulators

Andrew Daley, University of Strathclyde

Over the past few years, the possibility to control and measure atomic and molecular systems time-dependently has generated a lot of progress in exploring out-of-equilibrium dynamics for strongly interacting many-particle systems. This connects directly to fundamental questions relating to the relaxation of such systems to equilibrium, as well as the spreading of correlations and build-up of entanglement.

Friday, April 21, 2017 11:45 am - 11:45 am EDT (GMT -04:00)

RAC1 Journal Club/Seminar Series

Quantum Information Enabled Neutron Interferometry

Joachim Nsofini, IQC

In the quest to explore big quantum systems, there have been opportunities to explore smaller quantum system like the neutron interferometer. A neutron interferometer (NI) has proven to be a useful tool in the study of quantum effects ranging from  experiments with single particle interference to measuring quantities of significant importance in condensed-matter and Standard Model physics.

Monday, April 24, 2017 2:30 pm - 2:30 pm EDT (GMT -04:00)

Colloquium: Leonid Pryadko

Dephasing with strings attached

Leonid Pryadko, University of California, Riverside

Is there a difference between the quantum dynamics of a "real" particle and a collective excitation, like that in a spin ice, which creates a measurable gauge field? I will argue that in the presence of weak dephasing, the answer depends on the quantity measured.

Tuesday, April 25, 2017 1:00 pm - 1:00 pm EDT (GMT -04:00)

Special seminar: Abel Molina

The optimality of projections for quantum state exclusion

Abel Molina, IQC

We will first motivate the problem of quantum state exclusion of pure states, through its connections with the PBR game and with compatibility conditions for quantum state assignments. Then, we will discuss our recent result regarding the optimality of projections for perfect state exclusion of 3 pure states in 3 dimensions (arXiv:1702.06449).

Monday, May 8, 2017 2:30 pm - 2:30 pm EDT (GMT -04:00)

Colloquium: Hakan Tureci

A platform to study many-body physics with photons

Hakan Tureci, Princeton University

The past decade has seen enormous experimental progress in building superconducting electrical circuits featuring artificial atoms subject to the quantized electromagnetic field of microwave photons. The fabrication and control of superconducting circuits has reached a stage where many such elements can be wired up into intricate networks, allowing the preparation and readout of complex quantum states of photons and atoms.