Condensed Matter Seminar: Quantum non-demolition measurement of a many-body Hamiltonian
Dayou Yang (Univ. Ulm)
I will present our recent proposal on continuous quantum non-demolition (QND) measurement of a complex observable—the Hamiltonian of an interacting many-body system—in a trapped-ion analog quantum simulator.
Dayou Yang (Univ. Ulm)
Quantum non-demolition measurement of a many-body Hamiltonian
Mon 25. May 2020, 11:30 am (MEZ)
Abstract:
I will present our recent proposal on continuous quantum non-demolition (QND) measurement of a complex observable—the Hamiltonian of an interacting many-body system—in a trapped-ion analog quantum simulator. This contrasts existing QND measurements which are restricted to observables including few degrees of freedom. The proposed measurement prepares the many-body system in a narrow band of (highly excited) energy eigenstates, and potentially a single eigenstate. Our QND scheme, which can be carried over to other platforms of quantum simulation, provides opportunities to investigate experimentally fundamental aspects of equilibrium and non-equilibrium statistical physics including the eigenstate thermalization hypothesis (ETH) and quantum fluctuation relations.
Reference
Nat. Commun. 11, 775 (2020)