Quantum Interactive Matter: Harnessing Measurement and Feedback for Novel Quantum States

Organizers:

Andrew Jordan, Chapman University
Kater Murch, Washington University in St. Louis
David Weld, University of California, Santa Barbara

This workshop explores the emerging frontier of “quantum interactive matter,” where measurement and feedback fundamentally reshape the properties and dynamics of many-body quantum systems. Moving beyond the traditional paradigm of isolating quantum systems from their environment, we examine how controlled measurement and real-time feedback can serve as powerful resources for quantum state engineering. Recent theoretical breakthroughs in monitored quantum dynamics and experimental advances in quantum gas microscopy, superconducting circuits, and trapped ions have opened unprecedented opportunities to implement sophisticated measurement and feedback protocols that create and stabilize novel quantum phases. The workshop will bring together experimental and theoretical physicists to establish foundational principles for this discipline, focusing on how the interplay of unitary evolution, projective measurements, and adaptive feedback can generate structured quantum matter beyond conventional approaches. Key topics include quantum trajectory inference, measurement-induced phase transitions, feedback-stabilized entanglement, and the development of new theoretical frameworks for understanding measurement-driven quantum control. Through collaborative discussions, we aim to define the key scientific questions, identify the most promising experimental platforms, and develop a roadmap for advancing our understanding of how measurement and feedback can be harnessed to create entirely new forms of interactive quantum matter with applications spanning quantum simulation, sensing, and fundamental physics.