Benjamin D'Anjou
About me
I am currently hired as a research professional in the group of Alexandre Blais at the Quantum Institute of the University of Sherbrooke. I will study various aspects of the theory of superconducting quantum devices.
I was a postdoc in the group of Martin Plenio at the Center of Quantum Bioscience at the Ulm University. I worked on sensing and nanoscale NMR with NV centers in diamond.
I was a postdoctoral researcher at the University of Konstanz in the group of Guido Burkard from September 2017 to October 2019. I worked on optimizing the readout of spin qubits coupled to resonators.
I was formerly a doctoral researcher at McGill University in the group of Bill Coish, where we investigated the dynamics and measurements of nanoscale quantum systems.
Research interests
My doctoral and postdoctoral work have focused on improving measurements of the fundamental units of quantum information, the quantum bits (qubits), using a combination of advanced signal processing techniques and physical insight.
I am also interested in various areas of quantum physics, such as quantum computing, quantum error correction, quantum state tomography, quantum many-body physics, quantum optics, etc.
Recent publications
2022-11-30 - Detection of molecular transitions with nitrogen-vacancy centers and electron-spin labels
2021-04-01 - Generalized figure of merit for qubit readout
2020-04-08 - Repetitive quantum non-demolition measurement and soft decoding of a silicon spin qubit
2019-12-23 - Optimal Dispersive Readout of a Spin Qubit with a Microwave Resonator
2018-05-21 - High-fidelity single-shot readout for a spin qubit via an enhanced latching mechanism
News
2024-02-12 - Our preprint on a Unified picture of measurement-induced ionization in the transmon is available online.
2023-03-01 - I have joined the group of Alexandre Blais at the Institut Quantique of University of Sherbrooke.
2022-11-30 - Our paper Detection of molecular transitions with nitrogen-vacancy centers and electron-spin labels was published in npj Quantum Information.
2021-10-20 - Our new preprint Detection of molecular transitions with nitrogen-vacancy centers and electron-spin labels is available.
2021-04-01 - My article Generalized figure of merit for qubit readout has been published in Phyical Review A.
2020-08-19 - My new preprint A generalized figure of merit for qubit readout is available online.
2020-04-08 - Our collaboration paper Repetitive quantum non-demolition measurement and soft decoding of a silicon spin qubit has been published in Physical Review X.
2019-12-23 - I will be joining the group of M. B. Plenio at Ulm University on 01.02.2020.
2019-05-28 - I am now actively looking for research positions for the next year. Do not hesitate to contact me!
2019-05-24 - Our new preprint Optimal Dispersive Readout of a Spin Qubit with a Microwave Cavity is available.
2019-05-06 - I am actively looking for a postdoctoral research position for as early as September 2019. If you are interested, please let me know!
2018-05-21 - Our paper High-fidelity single-shot readout for a spin qubit via an enhanced latching mechanism has been published in Physical Review X.
2017-11-15 - A new manuscript Enhancing qubit readout through dissipative sub-Poissonian dynamics has been published in Physical Review A.
All publications
M. F. Dumas, B. Groleau-Paré, A. McDonald, M. H. Muñoz-Arias, C. Lledó, B. D'Anjou, and A. Blais, Unified picture of measurement-induced ionization in the transmon, arXiv:2402.06615 (2024).
C. Munuera-Javaloy, R. Puebla, B. D'Anjou, M.B. Plenio, and J. Casanova, Detection of molecular transitions with nitrogen-vacancy centers and electron-spin labels, npj Quantum Inf. 8, 140 (2022)
B. D'Anjou, Generalized figure of merit for qubit readout, Phys. Rev. A 103, 042404 (2021)
X. Xue, B. D'Anjou, T. F. Watson, D. R. Ward, D. E. Savage, M. G. Lagally, M. Friesen, S. N. Coppersmith, M. A. Eriksson, W. A. Coish, and L. M. K. Vandersypen, Repetitive quantum non-demolition measurement and soft decoding of a silicon spin qubit, Phys. Rev. X 10, 021006 (2020)
B. D'Anjou and G. Burkard, Optimal dispersive readout of a spin qubit with a microwave resonator, Phys. Rev. B 100, 245427 (2019)
P. Harvey-Collard, B. D'Anjou, M. Rudolph, N. T. Jacobson, J. Dominguez, G. A. Ten Eyck, J. R. Wendt, T. Pluym, M. P. Lilly, W. A. Coish, M. Pioro-Ladrière, and M. S. Carroll, High-fidelity single-shot readout for a spin qubit via an enhanced latching mechanism , Phys. Rev. X 8, 021046 (2018)
B. D'Anjou and W. A. Coish, Enhancing qubit readout through dissipative sub-Poissonian dynamics , Phys. Rev. A 96, 052321 (2017)
B. D'Anjou, L. Kuret, L. Childress, and W.A. Coish, Maximal adaptive-decision speedups in quantum-state readout , Phys. Rev. X 6, 011017 (2016)
B. D'Anjou and W.A. Coish, Soft decoding a qubit readout apparatus , Phys. Rev. Lett. 113, 230402 (2014)
B. D'Anjou and W.A. Coish, Optimal post-processing of a generic single-shot qubit readout , Phys. Rev. A 89, 012313 (2014), Editor's suggestion
B. D'Anjou and W.A. Coish, Anomalous magnetotransport in reflection-symmetric artificial molecules , Phys. Rev. B 87, 085443 (2013)
D.R. Cooper, B.D'Anjou, N. Ghattamaneni, B. Harack, M. Hilke, A. Horth, N. Majlis, M. Massicotte, L. Vandsburger, E. Whiteway, and V. Yu, Experimental review of graphene , ISRN Condensed Matter Physics, 501686 (2012). All authors contributed equally.