Alumni

Alex Ruichao Ma, University of Chicago

Superconducting circuits have emerged as a competitive platform for quantum computation, satisfying the challenges of controllability, long coherence and strong interactions. Here we apply this toolbox to the exploration of strongly correlated quantum materials made of microwave photons. We develop a versatile recipe that uses engineered dissipation to stabilize many-body phases, protecting them against intrinsic photon losses.

APS March Meeting Student Practice Talk Session

Silicon MOSFET quantum dots with simplified metal-gate geometry

Eduardo Barrera

Silicon (Si) CMOS spin qubits have become a promising platform for a future quantum information processor due to recent demonstrations of high fidelity single and two qubit gates [Veldhorst et. al., Nature 526.7573 (2015)], compatibility with industrial CMOS process and promising prospects for scalability.

Multi-level control in large-anharmonicity high-coherence capacitively shunted flux qubits

PhD Candidate: Muhammet Yurtalan
Supervisors: Adrian Lupascu and Zbigniew Wasilewski

Thesis on display in the Engineering graduate office, E7-7402.

Oral defence in EIT 3142.

Alan Jamison, Massachusetts Institute of Technology (MIT)

Cooling atomic gases to quantum degeneracy opened the new field of quantum simulation. Here the precise tools of atomic physics can be used to study exotic models from condensed matter or nuclear physics with unique tunability and control. Ultracold molecules bring many new possibilities to quantum simulation. I will review the physics of ultracold molecules, including our recent production of stable, ultracold triplet molecules and what they can add to quantum simulation.

Max Hofheinz, University of Sherbrooke

In superconducting quantum circuits the Josephson junction is the key element because it is the only strongly nonlinear and dissipationless circuit element we know. Usually it is used in the superconducting state where it acts as a nonlinear inductor, for example in Josephson qubits or Josephson parametric amplifiers. But a Josephson junction can also be nonlinear and dissipationless when a non-zero DC voltage below the gap is applied.

Fereshte Ghahari Kermani, National Institute of Standards and Technology (NIST)

Recent progress in creating graphene quantum dots (QDs) with fixed build-in potentials has offered a new platform to visualize and probe the confined electronic states. In this talk, I describe scanning tunneling spectroscopy measurements of the energy spectrum of graphene QDs as a function of energy, spatial position, and magnetic field.