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Quantum eigenstate tomography with qubit tunneling spectroscopy
2017
Low temperature physics (Woodbury, N.Y., Print)
Measurement of the energy eigenvalues (spectrum) of a multi-qubit system has recently become possible by qubit tunneling spectroscopy (QTS). In the standard QTS experiments, an incoherent probe qubit is strongly coupled to one of the qubits of the system in such a way that its incoherent tunneling rate provides information about the energy eigenvalues of the original (source) system. In this paper, we generalize QTS by coupling the probe qubit to many source qubits. We show that by properly
doi:10.1063/1.4995624
fatcat:c6desqme5jgfnmtbdgq5fhmmr4