Aashish Clerk
Contact:
Institute for Molecular Engineering,
University of Chicago,
5640 S. Ellis Ave.,
Chicago, IL, 60631.
Tel: (773) 834 4568
Office: Eckhart 289
email: aaclerk at uchicago.edu

Welcome!

My group is broadly interested in a variety of driven-dissipative quantum phenomena occurring in engineered quantum systems. Our research is at the intersection of condensed matter physics, quantum optics, and quantum information. While we are theorists, we work closely with a number of leading experimental groups around the world.



Brief Bio:

  • Professor, University of Chicago, 2017 -
  • Canada Research Chair (Tier I), 2015 - 2017
  • Professor, McGill University, 2015 - 2017
  • (Assoc. Prof. 2009 - 2015, Assistant Prof. 2004 - 2009)
  • Simons Foundation Fellow in Theoretical Physics , 2017
  • Rutherford Medal, Royal Society of Canada, 2015
  • E. W. R. Steacie Memorial Fellowship (NSERC) , 2014
  • Alfred P. Sloan Fellowship, 2007
  • Canada Research Chair (Tier II), 2004 - 2014
  • Postdoctoral Fellow, Yale Univ., 2001 - 2004
  • Ph.D. Physics, Cornell Univ., 2001
  • Hon. B.Sc. Mathematics & Physics, Univ. of Toronto, 1996


Openings, News, Etc.

Research Interests

  • Driven-dissipative quantum systems
  • Quantum optomechanics & electromechanics
  • Superconducting circuits and qubits
  • Quantum electronic systems (transport, noise, etc.)

nanoelectro

Effective temperature (possibly negative!) of incoherently tunneling Cooper pairs. Read the paper.


Recent Research Highlights

Topological bosonic states via squeezing

PAT

There is enormous interest in engineering topological photonic systems, where topological protection guarantees the existence of robust edge modes. Most works in this field amount to replicating a well-known fermionic single-particle Hamiltonian. We recently studied a class of systems where this correspondence fails. Here, topology is induced by coherent two-photon driving (i.e. parametric driving). While these systems have a Hamiltonian resembling that of a fermionic topological superconductor, the bosonic physics is completely different. In particular, the topologically-protected edge states can act as frequency-converting channels, and can even serve as quantum-limited amplifiers and squeezed light sources. It is even possible to construct bosonic systems that are reminiscent of the fermionic Kitaev-Majorana chain.

Nature Communications, 2016

Phys. Rev. X, 2016

Phys. Rev. X, 2018

Enhanced light-matter interactions via two-photon driving

negT

We show how two-photon (or parametric) driving can be used to enhance the basic light-matter interaction in a generic cavity QED system, where a two-level atom (or qubit) interacts with photons in a cavity. Driving thus enables a weakly interacting system to behave like a strongly interacting one, and even allows one to reach so-called "ultra-strong" coupling regimes. Applications include the efficient production of highly entangled Schrodinger-cat style states. The effects we predict could be realized in a number of experimental platforms, including with superconducting quantum circuits.

Phys. Rev. Lett., 2018