Jordi Weggemans

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About me

I am a PhD candidate (started January 2021, expected to graduate early 2025) at the Algorithms & Complexity Group of CWI (QuSoft), supervised by Harry Buhrman. Previously, I studied Applied Mathematics (Operations Research track) and Applied Physics (Materials Science track) at the University of Twente, and did a research internship at the University of Cambridge (Quantum materials and devices group).

I am predominantly interested in quantum complexity theory, but have also explored quantum query complexity, fault-tolerant benchmarking and quantum property testing.

Next to research, I write and produce music.

Name:	Jordi Weggemans
Affiliation:	QuSoft, Centrum Wiskunde & Informatica
Work address:	L210, CWI
	Science Park 123
	1098 XG, Amsterdam
	The Netherlands
Email:	jrw at cwi dot nl

Publications and preprints

Check also my Google scholar profile.

• Classical versus quantum queries in quantum PCPs with classical proofs
  Harry Buhrman, François Le Gall and Jordi Weggemans
  [arXiv]
• Finding quantum partial assignments by search-to-decision reductions
  Jordi Weggemans
  [arXiv]
• Permutation tests for quantum state identity
  Harry Buhrman, Dmitry Grinko, Philip Verduyn Lunel and Jordi Weggemans
  Accepted for the non-proceedings track of Theory of Quantum Computation, Communication, and Cryptography (TQC 2024)
  [arXiv]
• Quantum PCPs: on Adaptivity, Multiple Provers and Reductions to Local Hamiltonians
  Harry Buhrman, Jonas Helsen and Jordi Weggemans
  Accepted for the non-proceedings track of Theory of Quantum Computation, Communication, and Cryptography (TQC 2024)
  [arXiv]
• Lower Bounds for Unitary Property Testing with Proofs and Advice
  Jordi Weggemans
  [arXiv]
• Guidable Local Hamiltonian Problems with Implications to Heuristic Ansatze State Preparation and the Quantum PCP Conjecture
  Jordi Weggemans, Marten Folkertsma and Chris Cade
  Accepted for the proceedings track of Theory of Quantum Computation, Communication, and Cryptography (TQC 2024)
  [arXiv] [Talk]
• Improved Hardness Results for the Guided Local Hamiltonian Problem
  Chris Cade, Marten Folkertsma, Sevag Gharibian, Ryu Hayakawa, François Le Gall, Tomoyuki Morimae and Jordi Weggemans
  Proceedings of the 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP 2023)
  [arXiv]
• Complexity of the Guided Local Hamiltonian Problem: Improved Parameters and Extension to Excited States
  Chris Cade, Marten Folkertsma and Jordi Weggemans
  Presented at the 26th Annual Conference on Quantum Information Processing (QIP 2023)
  [arXiv] [Talk]
• Quantum Algorithms for Community Detection and their Empirical Run-times
  Chris Cade, Marten Folkertsma, Ido Niessen and Jordi Weggemans
  Published in Quantum Information and Computation 24 (5&6)
  Merged talk at the Quantum Computing Theory in Practice (QCTIP 2022)
  [arXiv]
• Quantifying Grover speed-ups beyond asymptotic analysis
  Chris Cade, Marten Folkertsma, Ido Niesen and Jordi Weggemans
  Accepted talk at the Quantum Computing Theory in Practice (QCTIP 2022)
  [arXiv] [Talk]
• Solving correlation clustering with QAOA and a Rydberg qudit system: a full-stack approach
  Jordi Weggemans, Alexander Urech, Alexander Rausch, Robert Spreeuw, Richard Boucherie, Florian Schreck, Kareljan Schoutens, Jiří Minář and Florian Speelman
  Published in Quantum 6, 687 (2022)
  [arXiv ] [Talk]
• Tunable critical field in Rashba superconductor thin-films
  A. B. Olde Olthof, J.R. Weggemans, G. Kimbell, J. W. A. Robinson and X. Montiel
  Published in journal of Physical Review B 103, L020504
  [arXiv]

Teaching

• Masters project Martijn Brehm (now PhD student at UvA)
  Role: daily supervisor (2022-2023)
• Quantum Quest
  Role: lecturer (2021,2023)
• Algorithms & Complexity
  Role: teaching assistant (2022)

Awards

• Lorentz Graduation Prize for Theoretical Physics 2021 (KHMW)

Last update: 09-08-2024