1. From Adiabatic to Dispersive Readout of Quantum Circuits
- Author
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L. Tosi, Cristian Urbina, Sunghun Park, C. Metzger, A. Levy Yeyati, Hugues Pothier, M. F. Goffman, Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Instituto de Física de Materiales 'Nicolás Cabrera', Universidad Autonoma de Madrid (UAM), Quantronics Group (QUANTRONICS), Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centro Atómico Bariloche [Argentine], Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Comisión Nacional de Energía Atómica [ARGENTINA] (CNEA), UAM. Departamento de Física Teórica de la Materia Condensada, Pothier, Hugues, and Universidad Autónoma de Madrid (UAM)
- Subjects
Detunings ,General Physics and Astronomy ,Virtual particle ,FOS: Physical sciences ,General Description ,[PHYS.COND.CM-S] Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] ,01 natural sciences ,Capacitance ,Superconductivity (cond-mat.supr-con) ,purl.org/becyt/ford/1 [https] ,Resonator ,Quantum circuit ,0103 physical sciences ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,010306 general physics ,Adiabatic process ,Spectral Properties ,Quantum ,[PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall] ,Electronic circuit ,Physics ,Quantum Physics ,Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Superconductivity ,Física ,Quantum Circuit ,Virtual Photons ,purl.org/becyt/ford/1.3 [https] ,Detuned ,Inductance ,[PHYS.COND.CM-MSQHE] Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall] ,[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] ,Resonance Frequency Shift ,Quantum electrodynamics ,cQED ,Circuitos cuánticos ,Quantum Physics (quant-ph) - Abstract
Spectral properties of a quantum circuit are efficiently read out by monitoring the resonance frequency shift it induces in a microwave resonator coupled to it. When the two systems are strongly detuned, theory attributes the shift to an effective resonator capacitance or inductance that depends on the quantum circuit state. At small detuning, the shift arises from the exchange of virtual photons, as described by the Jaynes-Cummings model. Here we present a theory bridging these two limits and illustrate, with several examples, its necessity for a general description of quantum circuits readout., 10 pages, 6 figures (including supplemental material), accepted for publication in Phys. Rev. Lett
- Published
- 2020