List of publications on arXiv.org here. Alex’s Google Scholar page here.

• End-to-end workflow for machine learning-based qubit readout with QICK and hls4ml.
  Giuseppe Di Guglielmo, Botao Du, Javier Campos, Alexandra Boltasseva, Akash V. Dixit, Farah Fahim, Zhaxylyk Kudyshev, Santiago Lopez, Ruichao Ma, Gabriel N. Perdue, Nhan Tran, Omer Yesilyurt, Daniel Bowring,
  https://arxiv.org/abs/2501.14663 (2025)

• Tunneling Spectroscopy in Superconducting Circuit Lattices.
  Botao Du, Qihao Guo, Santiago López, Ruichao Ma,
  https://arxiv.org/abs/2411.07997 (2024)

• Probing Site-Resolved Current in Strongly Interacting Superconducting Circuit Lattices.
  Botao Du, Ramya Suresh, Santiago López, Jeremy Cadiente, Ruichao Ma,
  Phys. Rev. Lett. 133, 060601 (2024).

• The transmon qubit for electromagnetics engineers: An introduction.
  Thomas E. Roth, Ruichao Ma, Weng C. Chew,
  IEEE Antennas and Propagation Magazine 65 (2), 8-20 (2022). arXiv version.

• Quantum Simulators: Architectures and Opportunities.
  Ehud Altman et al., participants of the NSF workshop on “Programmable Quantum Simulators”,
  PRX Quantum 2, 017003 (2021).

Recent work at University of Chicago

• Chiral cavity quantum electrodynamics.
  John Clai Owens, Margaret G. Panetta, Brendan Saxberg, Gabrielle Roberts, Srivatsan Chakram, Ruichao Ma, Andrei Vrajitoarea, Jonathan Simon, David I. Schuster,
  Nature Physics 18 (9), 1048-1052 (2022).

• A Dissipatively Stabilized Mott Insulator of Photons.
  Ruichao Ma, Brendan Saxberg, Clai Owens, Nelson Leung and Yao Lu, Jonathan Simon and David Schuster,
  Nature 566, 51–57 (2019). [Selected for a Nature “News and Views”]

• Deterministic bidirectional communication and remote entanglement generation between superconducting qubits.
  Nelson Leung, Yao Lu, Srivatsan Chakram, Ravi K. Naik, Nate Earnest, Ruichao Ma, Kurt Jacobs, Andrew N. Cleland, David I. Schuster,
  npj Quantum Inf. 5: 18 (2019).

• Quarter-Flux Hofstadter Lattice in Qubit-Compatible Microwave Cavity Array.
  Clai Owens, Aman LaChapelle, Brendan Saxberg, Brandon Anderson, Ruichao Ma, Jonathan Simon, David I. Schuster,
  Phys. Rev. A 97, 013818 (2018).

• An Autonomous Stabilizer for Incompressible Photon Fluids and Solids.
  Ruichao Ma, Clai Owens, Andrew Houck, David I. Schuster, Jonathan Simon,
  Phys. Rev. A 95, 043811 (2017).

• Hamiltonian Tomography of Photonic Lattices.
  Ruichao Ma, Clai Owens, Aman LaChapelle, David I. Schuster, Jonathan Simon,
  Phys. Rev. A 95, 062120 (2017).

• Engineering Topological Many-Body Materials in Microwave Cavity Arrays.
  Brandon M. Anderson, Ruichao Ma, Clai Owens, David I. Schuster, Jonathan Simon,
  Phys. Rev. X 6, 041043 (2016).

Previous work on ultracold atoms at Harvard

• Ultra-precise holographic beam shaping for microscopic quantum control.
  Philip Zupancic, Philipp M. Preiss, Ruichao Ma, Alexander Lukin, M. Eric Tai, Matthew Rispoli, Rajibul Islam, Markus Greiner,
  Opt. Express 24: 1388113893 (2016).

• Measuring entanglement entropy in a quantum many-body system.
  Rajibul Islam, Ruichao Ma, Philipp M. Preiss, M. Eric Tai, Alexander Lukin, Matthew Rispoli, Markus Greiner,
  Nature 528: 7783 (2015). [Selected for a Nature “News and Views”]

• Quantum gas microscopy with spin, atom-number, and multilayer readout.
  Philipp M. Preiss, Ruichao Ma, M. Eric Tai, Jonathan Simon, Markus Greiner,
  Phys. Rev. A 91, 041602(R) (2015).

• Strongly correlated quantum walks in optical lattices.
  Philipp M. Preiss, Ruichao Ma, M. Eric Tai, Alexander Lukin, Matthew Rispoli, Philip Zupancic, Yoav Lahini, Rajibul Islam, Markus Greiner,
  Science 347: 12291233 (2015). [Selected for a Science “Perspective”]

• Orbital excitation blockade and algorithmic cooling in quantum gases.
  Waseem S. Bakr, Philipp M. Preiss, M. Eric Tai, Ruichao Ma, Jonathan Simon, Markus Greiner,
  Nature 480, 500-503 (2011). [Selected for a Nature “News and Views”]

• Photon-Assisted Tunneling in a Biased, Strongly Correlated Bose Gas.
  Ruichao Ma, M. Eric Tai, Philipp M. Preiss, Waseem S. Bakr, Jonathan Simon, Markus Greiner,
  Phys. Rev. Lett. 107, 095301 (2011).

• Quantum Simulation of Antiferromagnetic Spin Chains in an Optical Lattice.
  Jonathan Simon, Waseem S. Bakr, Ruichao Ma, M. Eric Tai, Philipp M. Preiss, Markus Greiner,
  Nature 472, 307-312 (2011). [Selected for a Nature “News and Views”]

• Probing the Superfluid-to-Mott-Insulator Transition at the Single-Atom Level.
  Waseem S. Bakr, Amy Peng, M. Eric Tai, Ruichao Ma, Jonathan Simon, Jonathon Gillen, Simon F¨olling, Lode Pollet, Markus Greiner,
  Science 329, 547-550 (2010). [Selected for a Science “Perspective”]

Theses

• Engineered potentials and dynamics of ultracold quantum gases under the microscope.
  Ruichao Ma, PhD Thesis, Harvard University (2014). Advisor: Markus Greiner