Jack Spilecki

I am a PhD student at UC Berkeley, fortunate to be advised by John Wright, and broadly interested in quantum information and computation. Before Berkeley, I studied physics and mathematics at MIT.

Papers

• The Keyl-Werner algorithm is not optimal for spectrum estimation
  Angelos Pelecanos, Jack Spilecki, Ewin Tang, John Wright
  FOCS 2026
• Nonasymptotic bounds for quantum purity amplification
  Thilo Scharnhorst, Jack Spilecki, John Wright
  Manuscript
• Mixed state tomography reduces to pure state tomography
  Angelos Pelecanos, Jack Spilecki, Ewin Tang, John Wright
  FOCS 2026
• Optimal lower bounds for quantum state tomography
  Thilo Scharnhorst, Jack Spilecki, John Wright
  QIP 2026
• The debiased Keyl’s algorithm: a new unbiased estimator for full state tomography
  Angelos Pelecanos, Jack Spilecki, John Wright
  QIP 2026, STOC 2026