Topological excitations and bound photon pairs in a superconducting quantum metamaterial

Ilya S. Besedin; Maxim A. Gorlach; Nikolay N. Abramov; Ivan Tsitsilin; Ilya N. Moskalenko; Alina A. Dobronosova; Dmitry O. Moskalev; Alexey R. Matanin; Nikita S. Smirnov; Ilya A. Rodionov; Alexander N. Poddubny; Alexey V. Ustinov

doi:https://doi.org/10.1103/PhysRevB.103.224520

Topological excitations and bound photon pairs in a superconducting quantum metamaterial

Ilya S. Besedin, Maxim A. Gorlach, Nikolay N. Abramov, Ivan Tsitsilin, Ilya N. Moskalenko, Alina A. Dobronosova, Dmitry O. Moskalev, Alexey R. Matanin, Nikita S. Smirnov, Ilya A. Rodionov, Alexander N. Poddubny, Alexey V. Ustinov

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

Abstract

Recent discoveries in topological physics hold promise for disorder-robust quantum systems and technologies. Topological states provide the crucial ingredient of such systems featuring increased robustness to disorder and imperfections. Here we use an array of superconducting qubits to engineer a one-dimensional topologically nontrivial quantum metamaterial. By performing microwave spectroscopy of the fabricated array, we experimentally observe the spectrum of elementary excitations. We reveal not only the single-photon topological states but also the bands of exotic bound photon pairs arising due to the inherent anharmonicity of qubits. Furthermore, we discuss the formation of the two-photon bound edge-localized state and confirm the topological origin of our model demonstrating disorder-robust behavior of photon-photon correlation function for the topological edge state. Our work provides an experimental implementation of the topological model with attractive photon-photon interaction in a quantum metamaterial.

Original language	English
Article number	224520
Journal	Physical Review B
Volume	103
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.103.224520
State	Published - 1 Jun 2021
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Besedin, I. S., Gorlach, M. A., Abramov, N. N., Tsitsilin, I., Moskalenko, I. N., Dobronosova, A. A., Moskalev, D. O., Matanin, A. R., Smirnov, N. S., Rodionov, I. A., Poddubny, A. N., & Ustinov, A. V. (2021). Topological excitations and bound photon pairs in a superconducting quantum metamaterial. Physical Review B, 103(22), Article 224520. https://doi.org/10.1103/PhysRevB.103.224520

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title = "Topological excitations and bound photon pairs in a superconducting quantum metamaterial",

abstract = "Recent discoveries in topological physics hold promise for disorder-robust quantum systems and technologies. Topological states provide the crucial ingredient of such systems featuring increased robustness to disorder and imperfections. Here we use an array of superconducting qubits to engineer a one-dimensional topologically nontrivial quantum metamaterial. By performing microwave spectroscopy of the fabricated array, we experimentally observe the spectrum of elementary excitations. We reveal not only the single-photon topological states but also the bands of exotic bound photon pairs arising due to the inherent anharmonicity of qubits. Furthermore, we discuss the formation of the two-photon bound edge-localized state and confirm the topological origin of our model demonstrating disorder-robust behavior of photon-photon correlation function for the topological edge state. Our work provides an experimental implementation of the topological model with attractive photon-photon interaction in a quantum metamaterial.",

author = "Besedin, {Ilya S.} and Gorlach, {Maxim A.} and Abramov, {Nikolay N.} and Ivan Tsitsilin and Moskalenko, {Ilya N.} and Dobronosova, {Alina A.} and Moskalev, {Dmitry O.} and Matanin, {Alexey R.} and Smirnov, {Nikita S.} and Rodionov, {Ilya A.} and Poddubny, {Alexander N.} and Ustinov, {Alexey V.}",

note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

year = "2021",

month = jun,

day = "1",

doi = "https://doi.org/10.1103/PhysRevB.103.224520",

language = "الإنجليزيّة",

volume = "103",

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TY - JOUR

T1 - Topological excitations and bound photon pairs in a superconducting quantum metamaterial

AU - Besedin, Ilya S.

AU - Gorlach, Maxim A.

AU - Abramov, Nikolay N.

AU - Tsitsilin, Ivan

AU - Moskalenko, Ilya N.

AU - Dobronosova, Alina A.

AU - Moskalev, Dmitry O.

AU - Matanin, Alexey R.

AU - Smirnov, Nikita S.

AU - Rodionov, Ilya A.

AU - Poddubny, Alexander N.

AU - Ustinov, Alexey V.

PY - 2021/6/1

Y1 - 2021/6/1

N2 - Recent discoveries in topological physics hold promise for disorder-robust quantum systems and technologies. Topological states provide the crucial ingredient of such systems featuring increased robustness to disorder and imperfections. Here we use an array of superconducting qubits to engineer a one-dimensional topologically nontrivial quantum metamaterial. By performing microwave spectroscopy of the fabricated array, we experimentally observe the spectrum of elementary excitations. We reveal not only the single-photon topological states but also the bands of exotic bound photon pairs arising due to the inherent anharmonicity of qubits. Furthermore, we discuss the formation of the two-photon bound edge-localized state and confirm the topological origin of our model demonstrating disorder-robust behavior of photon-photon correlation function for the topological edge state. Our work provides an experimental implementation of the topological model with attractive photon-photon interaction in a quantum metamaterial.

AB - Recent discoveries in topological physics hold promise for disorder-robust quantum systems and technologies. Topological states provide the crucial ingredient of such systems featuring increased robustness to disorder and imperfections. Here we use an array of superconducting qubits to engineer a one-dimensional topologically nontrivial quantum metamaterial. By performing microwave spectroscopy of the fabricated array, we experimentally observe the spectrum of elementary excitations. We reveal not only the single-photon topological states but also the bands of exotic bound photon pairs arising due to the inherent anharmonicity of qubits. Furthermore, we discuss the formation of the two-photon bound edge-localized state and confirm the topological origin of our model demonstrating disorder-robust behavior of photon-photon correlation function for the topological edge state. Our work provides an experimental implementation of the topological model with attractive photon-photon interaction in a quantum metamaterial.

UR - http://www.scopus.com/inward/record.url?scp=85108224916&partnerID=8YFLogxK

U2 - https://doi.org/10.1103/PhysRevB.103.224520

DO - https://doi.org/10.1103/PhysRevB.103.224520

M3 - مقالة

SN - 2469-9950

VL - 103

JO - Physical Review B

JF - Physical Review B

IS - 22

M1 - 224520

ER -

Topological excitations and bound photon pairs in a superconducting quantum metamaterial

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All Science Journal Classification (ASJC) codes

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