Enhancement of the optomechanical coupling and Kerr nonlinearity using the Josephson capacitance of a Cooper-pair box

Juuso Manninen; Mohammad Tasnimul Haque; David Vitali; Pertti Hakonen

doi:10.1103/PhysRevB.105.144508

Enhancement of the optomechanical coupling and Kerr nonlinearity using the Josephson capacitance of a Cooper-pair box

Juuso Manninen
, Mohammad Tasnimul Haque
, David Vitali
, Pertti Hakonen

University of Camerino

Research output: Contribution to journal › Article › Scientific › peer-review

15 Citations (Scopus)

203 Downloads (Pure)

Abstract

We propose a scheme for enhancing the optomechanical coupling between microwave and mechanical resonators by up to seven orders of magnitude to the ultrastrong coupling limit in a circuit optomechanical setting. The tripartite system considered here consists of a Josephson junction Cooper-pair box that mediates the coupling between the microwave cavity and the mechanical resonator. The optomechanical coupling can be modified by tuning the gate charge and the magnetic flux bias of the Cooper-pair box which in turn affect the Josephson capacitance of the Cooper-pair box. We additionally show that with a suitable choice of tuning parameters, the optomechanical coupling vanishes and the system purely exhibits a cross-Kerr type of nonlinearity between the cavity and the mechanical resonator. This allows the system to be used for phonon counting.

Original language	English
Article number	144508
Pages (from-to)	1-15
Number of pages	15
Journal	Physical Review B
Volume	105
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.105.144508
Publication status	Published - 1 Apr 2022
MoE publication type	A1 Journal article-refereed

Funding

We thank Andreas Hüttel, Yuriy Makhlin, Francesco Massel, and Tero Heikkilä for useful discussions. This work was supported by the Academy of Finland Center of Excellence Quantum Technology Finland (Grant No. 312295) and RADDESS program (Grant No. 314448, BOLOSE), as well as by the European Research Council (Grant No. 670743). M.T.H. acknowledges support from the European Union's Horizon 2020 program for research and innovation under Grant Agreement No. 722923 (Marie Curie ETN-OMT) and a three-month-long secondment at University of Camerino, during which part of the work was carried out. J.M. thanks the support of the Vilho, Yrjö and Kalle Väisälä Foundation of the Finnish Academy of Science and Letters. This work was also supported in part by COST Action CA16218 (NANOCOHYBRI) and the European Microkelvin Platform (EMP, No. 824109).

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10.1103/PhysRevB.105.144508

Enhancement of the optomechanical coupling and Kerr nonlinearity using the Josephson capacitance of a Cooper-pair boxFinal published version, 1.36 MB

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title = "Enhancement of the optomechanical coupling and Kerr nonlinearity using the Josephson capacitance of a Cooper-pair box",

abstract = "We propose a scheme for enhancing the optomechanical coupling between microwave and mechanical resonators by up to seven orders of magnitude to the ultrastrong coupling limit in a circuit optomechanical setting. The tripartite system considered here consists of a Josephson junction Cooper-pair box that mediates the coupling between the microwave cavity and the mechanical resonator. The optomechanical coupling can be modified by tuning the gate charge and the magnetic flux bias of the Cooper-pair box which in turn affect the Josephson capacitance of the Cooper-pair box. We additionally show that with a suitable choice of tuning parameters, the optomechanical coupling vanishes and the system purely exhibits a cross-Kerr type of nonlinearity between the cavity and the mechanical resonator. This allows the system to be used for phonon counting.",

author = "Juuso Manninen and Haque, \{Mohammad Tasnimul\} and David Vitali and Pertti Hakonen",

note = "| openaire: EC/H2020/670743/EU//QuDeT | openaire: EC/H2020/722923/EU//OMT | openaire: EC/H2020/824109/EU//EMP Funding Information: We thank Andreas H{\"u}ttel, Yuriy Makhlin, Francesco Massel, and Tero Heikkil{\"a} for useful discussions. This work was supported by the Academy of Finland Center of Excellence Quantum Technology Finland (Grant No. 312295) and RADDESS program (Grant No. 314448, BOLOSE), as well as by the European Research Council (Grant No. 670743). M.T.H. acknowledges support from the European Union's Horizon 2020 program for research and innovation under Grant Agreement No. 722923 (Marie Curie ETN-OMT) and a three-month-long secondment at University of Camerino, during which part of the work was carried out. J.M. thanks the support of the Vilho, Yrj{\"o} and Kalle V{\"a}is{\"a}l{\"a} Foundation of the Finnish Academy of Science and Letters. This work was also supported in part by COST Action CA16218 (NANOCOHYBRI) and the European Microkelvin Platform (EMP, No. 824109). Publisher Copyright: {\textcopyright} 2022 American Physical Society.",

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N2 - We propose a scheme for enhancing the optomechanical coupling between microwave and mechanical resonators by up to seven orders of magnitude to the ultrastrong coupling limit in a circuit optomechanical setting. The tripartite system considered here consists of a Josephson junction Cooper-pair box that mediates the coupling between the microwave cavity and the mechanical resonator. The optomechanical coupling can be modified by tuning the gate charge and the magnetic flux bias of the Cooper-pair box which in turn affect the Josephson capacitance of the Cooper-pair box. We additionally show that with a suitable choice of tuning parameters, the optomechanical coupling vanishes and the system purely exhibits a cross-Kerr type of nonlinearity between the cavity and the mechanical resonator. This allows the system to be used for phonon counting.

AB - We propose a scheme for enhancing the optomechanical coupling between microwave and mechanical resonators by up to seven orders of magnitude to the ultrastrong coupling limit in a circuit optomechanical setting. The tripartite system considered here consists of a Josephson junction Cooper-pair box that mediates the coupling between the microwave cavity and the mechanical resonator. The optomechanical coupling can be modified by tuning the gate charge and the magnetic flux bias of the Cooper-pair box which in turn affect the Josephson capacitance of the Cooper-pair box. We additionally show that with a suitable choice of tuning parameters, the optomechanical coupling vanishes and the system purely exhibits a cross-Kerr type of nonlinearity between the cavity and the mechanical resonator. This allows the system to be used for phonon counting.

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Enhancement of the optomechanical coupling and Kerr nonlinearity using the Josephson capacitance of a Cooper-pair box

Abstract

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BOLOSO: Ultrasensitive bolometers for security applications

Finnish Centre of Excellence in Quantum Technology

QuDeT: Quantum devices in topological matter: carbon nanotubes, graphene, and novel superfluids

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Enhancement of the optomechanical coupling and Kerr nonlinearity using the Josephson capacitance of a Cooper-pair box

Abstract

Funding

Access to Document

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Projects

BOLOSO: Ultrasensitive bolometers for security applications

Finnish Centre of Excellence in Quantum Technology

QuDeT: Quantum devices in topological matter: carbon nanotubes, graphene, and novel superfluids

Cite this