Kater Murch

Associate Professor

Office Contact Information

218 Crow

Physics Department, CB 1105
Washington University
One Brookings Drive
St. Louis, MO 63130-4899, USA

(314) 935-7765
(314) 935-6219

Research Interests

We are an experimental research group that conducts research at the interface of Atomic, Molecular, and Optical (AMO) and condensed matter physics. We use nano-fabrication techniques to construct artificial atoms from superconducting circuits allowing us to probe fundamental questions in quantum mechanics.

Superconducting artificial atoms are promisings system for the realization of quantum schemes for computation, simulation, and data encryption. While the fabrication of these systems allows for exquisite control over the properties of the quantum systems, their complex material nature results in coupling to uncontrolled degrees of freedom in the surrounding environment, eventually leading to decoherence of some states of these systems. Our research focuses on engineering the quantum system-environment interaction to preserve coherence, to prepare complex many body states, and to create interfaces with atomic systems such as cold neutral atoms, trapped ions, and solid state spins such as nitrogen vacancy centers in diamond.

Selected Publications

  • D. Tan, S. Weber, I. Siddiqi, K. Mølmer, K. W. Murch* Prediction and retrodiction for a continuously monitored superconducting qubit, Phys. Rev. Lett. 114, 090403 (2015)
  • S. J. Weber, A. Chantasri, J. Dressel, A. N. Jordan, K. W. Murch*, I. Siddiqi, Mapping the optimal route between two quantum states, Nature, 511, 570 (2014)
  • K. W. Murch, S. J. Weber, C. Macklin, I. Siddiqi, Observing single quantum trajectories of a superconducting qubit, Nature, 502, 211 (2013)
  • K. W. Murch, S. J. Weber, K. M. Beck, E. Ginossar, I. Siddiqi, Reduction of the radiative decay of atomic coherence in squeezed vacuum, Nature, 499 62-65 (2013)
  • K. W. Murch, E. Ginossar, S. J. Weber, R. Vijay, S.M. Girvin, I. Siddiqi, Quantum State Sensitivity of an Autoresonant Superconducting Circuit, Phys. Rev. B, 86 220503(R) (2012)
  • K. W. Murch, U. Vool, D. Zhou, S. J. Weber, S. M. Girvin, I. Siddiqi Cavity-assisted quantum bath engineering, Phys. Rev. Lett. 109, 183602 (2012)
  • R. Vijay, C. Macklin, D. H. Slichter, S. J. Weber, K. W. Murch, R. Niak, A. N. Korotkov, and I. Siddiqi, Quantum feedback control of a superconducting qubit: Persistent Rabi oscillations, Nature 490 77-80 (2012)
  • K. W. Murch, S. J. Weber, E. M. Levenson-Falk, R. Vijay, and I. Siddiqi, 1/f noise of microwave resonators and Josephson tunnel junctions at single photon energies and milikelvin temperatures, Appl. Phys. Lett. 100 142601 (2012)

Kater Murch's Complete Publications List


2008 Ph.D., University of California, Berkeley
2007 MA, University of California, Berkeley
1998 BA, Reed College


Professional History

2013-present Assistant Professor, Washington University
2008-2013 Postdoctoral Scholar, University of California, Berkeley