Siddhant Midha

I am currently a third-year graduate student at Princeton Quantum Initiative, Princeton University. I am co-advised by Sarang Gopalakrishnan and Dima Abanin. I graduated from IIT Bombay in 2024.

My research spans a network of ideas at the intersection of quantum information science and many-body physics. I am currently thinking about:

• Quantum Error Correction: Building theoretical tools that move us toward the next generation of fault-tolerant quantum computers. Currently, I’m particularly interested in efficient decoders that can scale with hardware, and perform real-time error-correction. Theoretically, this is a many-body physics problem consisting of local measurement-and-feedback dynamics, see this for a recent work.

• Quantum Simulation and Dynamics: I study the non-equilibrium dynamics of many-body quantum systems. Central questions are: what kind of complex phenomenon emerge under evolution governed by local interactions, when can we simulate such dynamics classically, and when do we fundamentally require a quantum computer? Tensor networks provide a rich theoretical and algorithmic playground, see, e.g., this.

• Quantum Sensing: Quantum systems are fragile, but that fragility can be turned into sensitivity. I’m interested in how to design controllable quantum devices that serve as precision sensors: what are the information-theoretic limits on their sensitivity, and what kind of phenomenon can be probed? Conversely, can tools from quantum metrology offer new ways to characterize phases of matter and dynamical phenomena? See this for a recent paper.

If you would like to chat about any of the topics above (or more!) feel free to reach out. If you are an IITB student, the material on the teaching page might be useful. If you are a person interested in learning more about quantum information, this may be useful.