Researcher

Jaijeet Roychowdhury

Also known as জয়জিৎশঙ্কর রায়চৌধুরী

Jaijeet Roychowdhury is a professor of electrical engineering and computer sciences at UC Berkeley whose research includes machine learning for dynamical systems and oscillator computing. He earned degrees at IIT Kanpur and Berkeley, then worked at Bell Labs, CeLight and the University of Minnesota. In 2002, he co-founded Berkeley Design Automation. His work on computation with oscillators included a 2014 paper on Boolean logic and a 2019 paper on Oscillator Ising Machines, coauthored with Tianshi Wang. The Ising-machine work earned him and Wang the 2019 Nokia Bell Labs Prize, and he received Berkeley’s Bakar Prize in 2023.

Works
228
Citations
5,931
h-index
37

Publication numbers from OpenAlex, as of 28 October 2026.

Timeline

  1. 1987–1993

    Degrees at Kanpur and Berkeley

    He earns a B.Tech. in electrical engineering at the Indian Institute of Technology Kanpur in 1987. At UC Berkeley, he earns an MS in 1989 and a PhD in 1993, both in electrical engineering and computer sciences.

  2. 1993–2000

    Research at Bell Laboratories

    From 1993 to 1995, he works in the Computer-Aided Design Laboratory at AT&T Bell Laboratories in Allentown, Pennsylvania. He works in Bell Laboratories’ Communication Sciences Research Division in Murray Hill, New Jersey, from 1995 to 2000.

  3. 2000–2008

    CeLight and Minnesota

    He works at the optical networking startup CeLight in Silver Spring, Maryland, from 2000 to 2001. From 2001 to 2008, he works in the University of Minnesota’s Electrical and Computer Engineering Department and Digital Technology Center in Minneapolis.

  4. 2002

    Co-founding Berkeley Design Automation

    In 2002, he co-founds Berkeley Design Automation.

  5. 2009

    An IEEE fellowship

    He becomes a Fellow of the Institute of Electrical and Electronics Engineers in 2009.

  6. 2014

    Boolean logic with oscillators

    In 2014, he releases “Boolean Computation Using Self-Sustaining Nonlinear Oscillators.” The paper describes how oscillators can act as latches and registers when logic states are represented by the phase of oscillatory signals.

  7. 2019

    Oscillator Ising Machines

    In 2019, he and Tianshi Wang coauthor “OIM: Oscillator-based Ising Machines for Solving Combinatorial Optimisation Problems,” which uses networks of coupled oscillators and presents working CMOS hardware prototypes. They win the 2019 Nokia Bell Labs Prize for their work on a processor element for discrete optimization problems.

  8. 2020–2023

    Bakar awards for oscillator computing

    He receives a Bakar Fellows Spark Award in 2020 and the Bakar Prize in 2023. His group’s Oscillator Ising Machine is part of the work recognized by the 2023 prize, which supports the transition of research into industry applications.

  9. June 2023

    Field-Programmable Ising Machines

    In June 2023, he coauthors “FPIM: Field-Programmable Ising Machines for Solving SAT” with Thomas Jagielski and Rajit Manohar. They develop a reconfigurable analog Ising-machine scheme for satisfiability problems and test their approach on 2,000 SATLIB benchmark problems.

  10. As of October 2026

    Professor at Berkeley

    As of October 2026, he is a professor in UC Berkeley’s Department of Electrical Engineering and Computer Sciences, in the Division of Electrical Engineering. His research includes machine learning for dynamical systems and self-sustaining oscillators for Ising-based computation.

Career

  1. NowUniversity of California, BerkeleyProfessor
  2. From 2002Berkeley Design AutomationCo-founder
  3. 2001–2008University of Minnesota
  4. 2000–2001CeLight
  5. 1995–2000Bell Labs
  6. 1993–1995Bell Labs

Education

  1. 1993University of California, BerkeleyPhD in electrical engineering and computer sciences
  2. 1989University of California, BerkeleyMS in electrical engineering and computer sciences
  3. 1987Indian Institute of Technology KanpurB.Tech. in electrical engineering

Sources and credits

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  1. Jaijeet Roychowdhury | EECS at UC Berkeley www2.eecs.berkeley.edu. Checked 28 October 2026.
  2. Jaijeet Roychowdhury jaijeet.github.io. Checked 28 October 2026.
  3. Jaijeet Roychowdhury - CITRIS and the Banatao Institute citris-uc.org. Checked 28 October 2026.
  4. Mini-Tutorials | ISCAS 2020 iscas2020.org. Checked 28 October 2026.
  5. IEEE Awards | Faculty Awards | EECS at UC Berkeley www2.eecs.berkeley.edu. Checked 28 October 2026.
  6. Boolean Computation Using Self-Sustaining Nonlinear Oscillators arxiv.org. Checked 28 October 2026.
  7. OIM: Oscillator-based Ising Machines for Solving Combinatorial Optimisation Problems arxiv.org. Checked 28 October 2026.
  8. Nokia Bell Labs Prize awarded to new processor technology pioneered by student and professor team from University of California at Berkeley nokia.com. Checked 28 October 2026.
  9. Faculty Fellows - Bakar Fellows Program bakarfellows.berkeley.edu. Checked 28 October 2026.
  10. Rikky Muller and Jaijeet Roychowdhury win 2023 Bakar Prize - EECS at Berkeley eecs.berkeley.edu. Checked 28 October 2026.
  11. FPIM: Field-Programmable Ising Machines for Solving SAT arxiv.org. Checked 28 October 2026.
  12. Jaijeet Roychowdhury | Research UC Berkeley vcresearch.berkeley.edu. Checked 28 October 2026.