Multiplexing Superconducting Qubit Circuit for Single Microwave Photon Generation

George, Richard E.; Senior, Jorden; Saira, Olli-Pentti; Pekola, Jukka P.; Graaf, S. E. de; Lindström, Tobias; Pashkin, Yu. A.

doi:10.1007/s10909-017-1787-x

Cited by 9 publications

(7 citation statements)

References 40 publications

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“…After processing, the substrates are diced with a diamondembedded resin blade, wire-bonded to the sample stage assembly described in Ref. 23. Finally, the sample is loaded into a cryogen-free dilution refrigerator with a base temperature of 10 mK.…”

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confidence: 99%

Utilization of the superconducting transition for characterizing low-quality-factor superconducting resonators

Chang

Karimi

Senior

et al. 2019

Applied Physics Letters

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Characterizing superconducting microwave resonators with highly dissipative elements is a technical challenge, but a requirement for implementing and understanding the operation of hybrid quantum devices involving dissipative elements, e.g. for thermal engineering and detection. We present experiments on λ/4 superconducting niobium coplanar waveguide (CPW) resonators, terminating at the antinode by a dissipative copper microstrip via aluminum leads, such that the resonator response is difficult to measure in a typical microwave environment. By measuring the transmission both above and below the superconducting transition of aluminum, we are able to isolate the resonance. We then experimentally verify this method with copper microstrips of increasing thicknesses, from 50 nm to 150 nm, and measure quality factors in the range of 10 ∼ 67 in a consistent way. arXiv:1904.01781v2 [cond-mat.supr-con]

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confidence: 99%

Utilization of the superconducting transition for characterizing low-quality-factor superconducting resonators

Chang

Karimi

Senior

et al. 2019

Applied Physics Letters

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“…Superconducting technologies offer quantum gates via the coupling between a Josephson qubit and GHz transmission line [45][46][47]. The qubit state is read out by a measuring of a dispersive shift in an auxiliary resonator [48,49]. In Ref.…”

Section: Modelmentioning

confidence: 99%

Many-body synchronization of interacting qubits by engineered ac-driving

Remizov,

Shapiro,

Rubtsov

2017

Preprint

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In this work we introduce the many-body synchronization of an interacting qubit ensemble which allows one to switch dynamically from many-body-localized (MBL) to an ergodic state. We show that applying of π-pulses with altering phases, one can effectively suppress the MBL phase and, hence, eliminate qubits disorder. The findings are based on the analysis of the Loschmidt echo dynamics which shows a transition from a power-law decay to more rapid one indicating the dynamical MBL-to-ergodic transition. The technique does not require to know the microscopic details of the disorder.

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“…Therefore, it is highly desirable to move as much of the instruments as possible into the cryostat and even into the quantum-processor package itself. Recent years have witnessed progress towards this goal with introduction of on-chip microwave attenuator [12], modulator [13], switch [14], gyrator [15], circulator [16], coherent microwave source [17], single-photon sources [18][19][20], and single-photon detectors [21][22][23][24][25][26][27][28][29][30][31]. This list is by no means exhaustive but exemplifies the great effort put towards miniaturizing the required instruments and components.…”

Section: Introductionmentioning

confidence: 99%