Researcher

Ashutosh Mishra

I work on theory and numerical aspects of quantum optimal control applied to superconducting qubits.

Doctoral researcher, Forschungszentum Jülich, Germany

Ashutosh Mishra
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About Me

Hi, I am a doctoral researcher at the Forschungszentum Jülich and Universität des Saarlandes, currently focused on theoretical and numerical aspects of quantum optimal control methods applicable towards multi-partite systems with large Hilbert space, and open quantum systems. My work develops a method for computing derivatives of time-ordered propagators for systems with large Hilbert space.

Furthermore, I actively contribute towards the development of an open source python package ParaQeet aimed at streamlining the simulation and optimization workflow for quantum systems. This combines analytical methods for computing gradients along with automatic differentiation, using the JAX framework, for ease of use.

I am looking forward to working on development of robust optimal control methods, and application of optimal control methods to quantum information and algorithms.

Quantum control Classical simulation of quantum systems Optimization Numerical Methods Automatic differentiation (JAX)
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Projects & Research

Robust optimization using landscape

Development of a robust optimization framework by characterization of cost functional landscape.

Upcoming

Analytical gradient computation

Development of a general framework for computing gradient of time-ordered propagators by analytical derivation of formal solution and series expansion. Numerical implementation demonstrates an order of magnitude speedup compared to current methods.

Optimization Framework

ParaQeet

An open-source python library for streamlining simulation and optimization of quantum system. Combines automatic differentiation methods with analytic gradients for faster runtimes.

Numerical Optimization

Demolition Measurement Protocol

Protocol to combine readout and reset of superconducting qubits by using quantum optimal control.

Hardware applications
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Research Experience

Doctoral Researcher — PGI-12, Forschungszentum Jülich
Sep 2021 – Sep 2026 · Jülich, Germany · PGI-12, Quantum Computing Analytics
  • PhD thesis: Open-loop quantum control for practical superconducting quantum systems (submitted)
  • Developed an analytical framework for computing gradients of quantum propagators with respect to any general pulse parameterization.
  • Developed formal solution for any nth order gradients of unitary propagator.
  • Investigating robust optimization techniques for quantum systems.
  • Contributed to development of open source python package based on JAX, in collaboration with researchers and software engineer.
  • Presented talks in APS march meeting 2025, DPG 2024. And poster in SQA 2025, AQuTe25, etc.
Bachelor's and Master's Thesis — IISc Bangalore
2019-2021 · Bangalore, India
  • Master’s thesis: Estimating errors in two qubit parametric iSWAP gate.
  • Bachelor’s Thesis: Input-output theory for qubit measurement in a circuit QED system.
  • Contributed to publishing few peer-reviewed manuscripts.
Research internship — The Australian National University
May - July 2019 · Canberra, Australia
  • Part of visiting scholarship award of Chennupati and Vidya Jagadish Visiting Scholarship and Fellowship Awards.
  • Built a trans-impedance amplifier circuit for a photo-detector used for high speed detection of laser signals.
  • Studied about quantum memories using electromagnetically induced transparency
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Selected Publications

2026
Efficient analytical gradient evaluation for locally-interacting large multi-qubit platforms
A. Mishra, E. Lupo, F. K. Wilhelm, and A. Ciani
In preparation (on arXiv soon)
2026
ParaQeet: A quantum optimal control toolkit with simple parameter management
A. Mishra, F. K. Wilhelm, and S. Machnes
In preparation (on arXiv soon)
2025
Demolition measurement protocol for transmon qubits
A. Mishra, F. K. Wilhelm, and S. Machnes
arXiv:2502.18322
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Education

Ph.D., Physics
Universität des Saarlandes, Germany
Advisor: Prof. Dr. Frank Wilhelm Mauch, Dr. Alessandro Ciani
2021 – 2026 (expected)
M.Sc., Physics
Indian institute of Science, Bangalore, India
Advisor: Dr. Baladitya Suri
CGPA: 9.0/10.0, First class with distinction
2020 – 2021
B.S. (Research)
Indian institute of Science, Bangalore, India
Advisor: Dr. Baladitya Suri
CGPA: 8.8/10.0, First class with distinction
2016 – 2020
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Awards

2019
Chennupati and Vidya Jagadish Visiting Scholarship and Fellowship Awards
Awarded by The Australian National University (ANU) for a research internship at ANU. This scholarship is awarded to up to 4 people each year.
2016 - 2021
Kishore Vaigyanik Protsahan Yojana (KVPY)
Fellowship instituted by the Department of Science and Technology, Government of India.
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Curriculum Vitae

A full record of my education, appointments, awards, and complete publication list.

Download CV (PDF) ↓
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Contact

Office
Room 22, 04.9, Forschungszentum Jülich