Quantum measurement protocol for many-body systems through projective measurements on ancillary sites

Add to your list(s) Download to your calendar using vCal

• Elmer Doggen (Karlsruhe Institute of Technology)
• Thursday 20 October 2022, 14:00-15:00
• TCM Seminar Room.

If you have a question about this talk, please contact Jan Behrends.

I will outline a protocol for implementing quantum measurements by coupling a many-body lattice system to a local degree of freedom. This method can be used for effective density measurements through the resulting Rabi oscillations in the ancillary degrees of freedom. Furthermore, an analysis of the effect of repeated measurements uncovers evidence for a disentangling-entangling measurement-induced transition as a function of the measurement strength, in analogy to direct measurement protocols. The transition requires an extensively growing number of measurements with system size. The dynamics is strongly non-Markovian, featuring a wide distribution of the entanglement entropy across trajectories.

This talk is part of the Theory of Condensed Matter series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Combined TCM Seminars and TCM blackboard seminar listing
• Featured lists
• Lennard-Jones Centre external
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• PMRFPS's
• School of Physical Sciences
• TCM Seminar Room
• Theory of Condensed Matter
• Thin Film Magnetic Talks
• few29

Note that ex-directory lists are not shown.