Exceptional points in tunable superconducting resonators

Research output: Contribution to journalArticleScientificpeer-review

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Exceptional points in tunable superconducting resonators. / Partanen, Matti; Goetz, Jan; Tan, Kuan Yen; Kohvakka, Kassius; Sevriuk, Vasilii; Lake, Russell E.; Kokkoniemi, Roope; Ikonen, Joni; Hazra, Dibyendu; Makinen, Akseli; Hyyppa, Eric; Gronberg, Leif; Vesterinen, Visa; Silveri, Matti; Mottonen, Mikko.

In: Physical Review B, Vol. 100, No. 13, 134505, 07.10.2019, p. 1-17.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Partanen, M, Goetz, J, Tan, KY, Kohvakka, K, Sevriuk, V, Lake, RE, Kokkoniemi, R, Ikonen, J, Hazra, D, Makinen, A, Hyyppa, E, Gronberg, L, Vesterinen, V, Silveri, M & Mottonen, M 2019, 'Exceptional points in tunable superconducting resonators', Physical Review B, vol. 100, no. 13, 134505, pp. 1-17. https://doi.org/10.1103/PhysRevB.100.134505

APA

Partanen, M., Goetz, J., Tan, K. Y., Kohvakka, K., Sevriuk, V., Lake, R. E., ... Mottonen, M. (2019). Exceptional points in tunable superconducting resonators. Physical Review B, 100(13), 1-17. [134505]. https://doi.org/10.1103/PhysRevB.100.134505

Vancouver

Partanen M, Goetz J, Tan KY, Kohvakka K, Sevriuk V, Lake RE et al. Exceptional points in tunable superconducting resonators. Physical Review B. 2019 Oct 7;100(13):1-17. 134505. https://doi.org/10.1103/PhysRevB.100.134505

Author

Partanen, Matti ; Goetz, Jan ; Tan, Kuan Yen ; Kohvakka, Kassius ; Sevriuk, Vasilii ; Lake, Russell E. ; Kokkoniemi, Roope ; Ikonen, Joni ; Hazra, Dibyendu ; Makinen, Akseli ; Hyyppa, Eric ; Gronberg, Leif ; Vesterinen, Visa ; Silveri, Matti ; Mottonen, Mikko. / Exceptional points in tunable superconducting resonators. In: Physical Review B. 2019 ; Vol. 100, No. 13. pp. 1-17.

Bibtex - Download

@article{45ec66aa8d6e4614b0c31c9648211a81,
title = "Exceptional points in tunable superconducting resonators",
abstract = "Superconducting quantum circuits are potential candidates to realize a large-scale quantum computer. The envisioned large density of integrated components, however, requires a proper thermal management and control of dissipation. To this end, it is advantageous to utilize tunable dissipation channels and to exploit the optimized heat flow at exceptional points (EPs). Here, we experimentally realize an EP in a superconducting microwave circuit consisting of two resonators. The EP is a singularity point of the effective Hamiltonian, and corresponds to critical damping with the most efficient heat transfer between the resonators without back and forth oscillation of energy. We observe a crossover from underdamped to overdamped coupling across the EP by utilizing photon-assisted tunneling as an in situ tunable dissipative element in one of the resonators. These methods can be used to obtain fast dissipation, for example, for initializing qubits to their ground states. In addition, these results pave the way for thorough investigation of parity-time symmetry and the spontaneous symmetry breaking at the EP in superconducting quantum circuits operating at the level of single energy quanta.",
keywords = "QUANTUM, PHYSICS, PHOTON, REFRIGERATION, CIRCUITS, QUBIT",
author = "Matti Partanen and Jan Goetz and Tan, {Kuan Yen} and Kassius Kohvakka and Vasilii Sevriuk and Lake, {Russell E.} and Roope Kokkoniemi and Joni Ikonen and Dibyendu Hazra and Akseli Makinen and Eric Hyyppa and Leif Gronberg and Visa Vesterinen and Matti Silveri and Mikko Mottonen",
note = "| openaire: EC/H2020/681311/EU//QUESS | openaire: EC/H2020/820505/EU//QMiCS | openaire: EC/H2020/795159/EU//NEQC",
year = "2019",
month = "10",
day = "7",
doi = "10.1103/PhysRevB.100.134505",
language = "English",
volume = "100",
pages = "1--17",
journal = "Physical Review B (Condensed Matter and Materials Physics)",
issn = "2469-9950",
publisher = "American Physical Society",
number = "13",

}

RIS - Download

TY - JOUR

T1 - Exceptional points in tunable superconducting resonators

AU - Partanen, Matti

AU - Goetz, Jan

AU - Tan, Kuan Yen

AU - Kohvakka, Kassius

AU - Sevriuk, Vasilii

AU - Lake, Russell E.

AU - Kokkoniemi, Roope

AU - Ikonen, Joni

AU - Hazra, Dibyendu

AU - Makinen, Akseli

AU - Hyyppa, Eric

AU - Gronberg, Leif

AU - Vesterinen, Visa

AU - Silveri, Matti

AU - Mottonen, Mikko

N1 - | openaire: EC/H2020/681311/EU//QUESS | openaire: EC/H2020/820505/EU//QMiCS | openaire: EC/H2020/795159/EU//NEQC

PY - 2019/10/7

Y1 - 2019/10/7

N2 - Superconducting quantum circuits are potential candidates to realize a large-scale quantum computer. The envisioned large density of integrated components, however, requires a proper thermal management and control of dissipation. To this end, it is advantageous to utilize tunable dissipation channels and to exploit the optimized heat flow at exceptional points (EPs). Here, we experimentally realize an EP in a superconducting microwave circuit consisting of two resonators. The EP is a singularity point of the effective Hamiltonian, and corresponds to critical damping with the most efficient heat transfer between the resonators without back and forth oscillation of energy. We observe a crossover from underdamped to overdamped coupling across the EP by utilizing photon-assisted tunneling as an in situ tunable dissipative element in one of the resonators. These methods can be used to obtain fast dissipation, for example, for initializing qubits to their ground states. In addition, these results pave the way for thorough investigation of parity-time symmetry and the spontaneous symmetry breaking at the EP in superconducting quantum circuits operating at the level of single energy quanta.

AB - Superconducting quantum circuits are potential candidates to realize a large-scale quantum computer. The envisioned large density of integrated components, however, requires a proper thermal management and control of dissipation. To this end, it is advantageous to utilize tunable dissipation channels and to exploit the optimized heat flow at exceptional points (EPs). Here, we experimentally realize an EP in a superconducting microwave circuit consisting of two resonators. The EP is a singularity point of the effective Hamiltonian, and corresponds to critical damping with the most efficient heat transfer between the resonators without back and forth oscillation of energy. We observe a crossover from underdamped to overdamped coupling across the EP by utilizing photon-assisted tunneling as an in situ tunable dissipative element in one of the resonators. These methods can be used to obtain fast dissipation, for example, for initializing qubits to their ground states. In addition, these results pave the way for thorough investigation of parity-time symmetry and the spontaneous symmetry breaking at the EP in superconducting quantum circuits operating at the level of single energy quanta.

KW - QUANTUM

KW - PHYSICS

KW - PHOTON

KW - REFRIGERATION

KW - CIRCUITS

KW - QUBIT

U2 - 10.1103/PhysRevB.100.134505

DO - 10.1103/PhysRevB.100.134505

M3 - Article

VL - 100

SP - 1

EP - 17

JO - Physical Review B (Condensed Matter and Materials Physics)

JF - Physical Review B (Condensed Matter and Materials Physics)

SN - 2469-9950

IS - 13

M1 - 134505

ER -

ID: 38037863