Observation of the Bloch-Siegert shift in a driven quantum-to-classical transition

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Observation of the Bloch-Siegert shift in a driven quantum-to-classical transition. / Pietikäinen, I.; Danilin, S.; Sampath Kumar, Karthikeyan; Vepsäläinen, A.; Golubev, D. S.; Tuorila, J.; Paraoanu, G. S.

julkaisussa: Physical Review B, Vuosikerta 96, Nro 2, 020501, 07.07.2017, s. 1-5.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Pietikäinen, I. ; Danilin, S. ; Sampath Kumar, Karthikeyan ; Vepsäläinen, A. ; Golubev, D. S. ; Tuorila, J. ; Paraoanu, G. S. / Observation of the Bloch-Siegert shift in a driven quantum-to-classical transition. Julkaisussa: Physical Review B. 2017 ; Vuosikerta 96, Nro 2. Sivut 1-5.

Bibtex - Lataa

@article{39486d56939f46dba58fe40c1d585203,
title = "Observation of the Bloch-Siegert shift in a driven quantum-to-classical transition",
abstract = "We show that the counter-rotating terms of the dispersive qubit-cavity Rabi model can produce relatively large and nonmonotonic Bloch-Siegert shifts in the cavity frequency as the system is driven through a quantum-to-classical transition. Using a weak microwave probe tone, we demonstrate experimentally this effect by monitoring the resonance frequency of a microwave cavity coupled to a transmon and driven by a microwave field with varying power. In the weakly driven regime (quantum phase), the Bloch-Siegert shift appears as a small constant frequency shift, while for a strong drive (classical phase) it presents an oscillatory behavior as a function of the number of photons in the cavity. The experimental results are in agreement with numerical simulations based on the quasienergy spectrum.",
author = "I. Pietik{\"a}inen and S. Danilin and {Sampath Kumar}, Karthikeyan and A. Veps{\"a}l{\"a}inen and Golubev, {D. S.} and J. Tuorila and Paraoanu, {G. S.}",
year = "2017",
month = "7",
day = "7",
doi = "10.1103/PhysRevB.96.020501",
language = "English",
volume = "96",
pages = "1--5",
journal = "Physical Review B (Condensed Matter and Materials Physics)",
issn = "2469-9950",
publisher = "American Physical Society",
number = "2",

}

RIS - Lataa

TY - JOUR

T1 - Observation of the Bloch-Siegert shift in a driven quantum-to-classical transition

AU - Pietikäinen, I.

AU - Danilin, S.

AU - Sampath Kumar, Karthikeyan

AU - Vepsäläinen, A.

AU - Golubev, D. S.

AU - Tuorila, J.

AU - Paraoanu, G. S.

PY - 2017/7/7

Y1 - 2017/7/7

N2 - We show that the counter-rotating terms of the dispersive qubit-cavity Rabi model can produce relatively large and nonmonotonic Bloch-Siegert shifts in the cavity frequency as the system is driven through a quantum-to-classical transition. Using a weak microwave probe tone, we demonstrate experimentally this effect by monitoring the resonance frequency of a microwave cavity coupled to a transmon and driven by a microwave field with varying power. In the weakly driven regime (quantum phase), the Bloch-Siegert shift appears as a small constant frequency shift, while for a strong drive (classical phase) it presents an oscillatory behavior as a function of the number of photons in the cavity. The experimental results are in agreement with numerical simulations based on the quasienergy spectrum.

AB - We show that the counter-rotating terms of the dispersive qubit-cavity Rabi model can produce relatively large and nonmonotonic Bloch-Siegert shifts in the cavity frequency as the system is driven through a quantum-to-classical transition. Using a weak microwave probe tone, we demonstrate experimentally this effect by monitoring the resonance frequency of a microwave cavity coupled to a transmon and driven by a microwave field with varying power. In the weakly driven regime (quantum phase), the Bloch-Siegert shift appears as a small constant frequency shift, while for a strong drive (classical phase) it presents an oscillatory behavior as a function of the number of photons in the cavity. The experimental results are in agreement with numerical simulations based on the quasienergy spectrum.

UR - http://www.scopus.com/inward/record.url?scp=85026396033&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.96.020501

DO - 10.1103/PhysRevB.96.020501

M3 - Article

VL - 96

SP - 1

EP - 5

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

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

SN - 2469-9950

IS - 2

M1 - 020501

ER -

ID: 14582035