Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Multiphoton transitions in a macroscopic quantum two-state system.

S Saito1, M Thorwart, H Tanaka

  • 1NTT Basic Research Laboratories, NTT Corporation, Kanagawa 243-0198, Japan.

Physical Review Letters
|August 25, 2004
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Induction of mammalian DNA topoisomerase I mediated DNA cleavage by antitumor indolocarbazole derivatives.

Biochemistry·1992
Same author

[Experimental study on platelet activating factor and systemic circulatory failure caused by ischemic liver].

Nihon Geka Gakkai zasshi·1992
Same author

Induction of topoisomerase II-mediated DNA cleavage by the plant naphthoquinones plumbagin and shikonin.

Antimicrobial agents and chemotherapy·1992
Same author

Microencapsulated islets in agarose gel as bioartificial pancreas for discordant xenotransplantation.

Transplantation proceedings·1992
Same author

[The surgical treatment for the Stanford type A aortic dissection].

[Zasshi] [Journal]. Nihon Kyobu Geka Gakkai·1992
Same author

Charcot-Marie-Tooth disease with diaphragmatic weakness.

Internal medicine (Tokyo, Japan)·1992
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Researchers observed multiphoton transitions in superconducting quantum circuits. The study details how these transitions, involving macroscopic superposition states, align with theoretical models like the spin-boson model.

Area of Science:

  • Quantum mechanics
  • Superconductivity
  • Condensed matter physics

Background:

  • Macroscopic quantum superposition states are fundamental to quantum mechanics.
  • Josephson junctions are key components in superconducting quantum circuits, enabling unique quantum phenomena.
  • Understanding multiphoton transitions is crucial for developing quantum technologies.

Purpose of the Study:

  • To experimentally observe and characterize multiphoton transitions between macroscopic quantum superposition states.
  • To investigate the behavior of superconducting loops with three Josephson junctions under strong radio-frequency (rf) photon fields.
  • To compare experimental results with theoretical predictions based on the Bloch equation and spin-boson models.

Main Methods:

  • Fabrication and manipulation of a superconducting loop containing three Josephson junctions.

Related Experiment Videos

  • Spectroscopic measurements utilizing a strong rf-photon field to induce transitions.
  • Analysis of resonant peaks and dips corresponding to multiphoton absorption.
  • Comparison of observed dip widths with Bessel function scaling, as predicted by theoretical models.

    • Main Results:

    • Observation of multiphoton transitions, including up to three-photon events, between two macroscopic quantum superposition states.
    • Identification of resonant peaks and dips in spectroscopic measurements.
    • Experimental verification that the widths of multiphoton absorption dips scale with Bessel functions.
    • Agreement between experimental data and theoretical predictions from the Bloch equation and spin-boson models.

    Conclusions:

    • The study successfully demonstrated and characterized multiphoton transitions in a macroscopic superconducting system.
    • Experimental results validate theoretical predictions concerning the behavior of such systems under strong electromagnetic fields.
    • This work provides insights into the quantum dynamics of superconducting circuits and supports the validity of theoretical frameworks like the spin-boson model.