Local readout and control of current and kinetic energy operators in optical lattices
arxiv(2023)
摘要
Quantum gas microscopes have revolutionized quantum simulations with
ultracold atoms, allowing to measure local observables and snapshots of quantum
states. However, measurements so far were mostly carried out in the occupation
basis. Here, we demonstrate how all kinetic operators, such as kinetic energy
or current operators, can be measured and manipulated with single bond
resolution. Beyond simple expectation values of these observables, the
single-shot measurements allow to access full counting statistics and complex
correlation functions. Our work paves the way for the implementation of
efficient quantum state tomography and hybrid quantum computing protocols for
itinerant particles on a lattice. In addition, we demonstrate how site-resolved
programmable potentials enable a spatially-selective, parallel readout in
different bases as well as the engineering of arbitrary initial states.
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