Skip to content
DraconiticResearch
Search Sources API
201,642 studies31 sourcesUpdated 15 min ago
PreprintCC BY 4.0arXiv

Coupled quantum critical states in a circuit simulator

  • D. B. Karki
  • Andrew K. Mitchell
Open at sourcePDFDOICite

Abstract

Hybrid metal-semiconductor quantum circuits offer a controlled setting for realizing and probing strongly correlated quantum matter. A largely open question that may be addressed by such simulators is whether coupled critical states can combine into new non-Fermi liquid (NFL) phases. Inspired by the recent realization of a two-site charge-Kondo circuit [W. Pouse \textit{et al.}, \href{https://www.nature.com/articles/s41567-022-01905-4}{Nat. Phys. \textbf{19}, 492 (2023)}], we uncover the fate of coupled Kondo anyons emerging from the two-channel-Kondo critical point at each site. Bosonization and quantum Brownian motion methods yield the full quasiballistic phase diagram and low-temperature transport properties, while numerical renormalization group calculations resolve the complementary weak-coupling limit. Together, these provide a unified description, and reveal robust NFL phases with continuously tunable transport and susceptibility exponents. Stronger inter-site coupling ultimately produces a screened Fermi liquid.

Related

  1. Trajectree - A quantum trajectory-based quantum circuit simulator
    Ansh Singal, Allen Zang, Jordan Thomas +5
    arXivPreprintCC BY 4.0Full textQuantum physics & quantum informationarXiv
  2. Using Learning Analytics to Study Novice Learners' Work on Quantum Circuit Simulator Tasks
    Juuso Jaakola, Vlad Stirbu, Teiko Heinosaari
    arXivPreprintarXiv licenceFull textQuantum physics & quantum informationarXiv
  3. Circuit complexity of coupled four-mode squeezed states in two-field inflation
    Tao Li, Hai-Bing Fu, Lei-Hua Liu
    arXivPreprintCC BY 4.0Full textGravitation & general relativityHigh-energy & particle physicsarXiv
  4. One-dimensional quantum Gibbs states in constant circuit depth
    Saúl Pilatowsky-Cameo, Georgios Styliaris, Ainesh Bakshi +1
    arXivPreprintarXiv licenceFull textMathematical physicsQuantum physics & quantum informationarXiv
  5. Observation of exact quantum critical states
    Wenhui Huang, Xin-Chi Zhou, Lushuang Zhang +29
    Nature PhysicsPeer-reviewedLicence not statedFull text7 citedAtomic, molecular & optical physicsOpenAlex

Cite

BibTeXRIS
BibTeX
@misc{karki2026coupled,
  title = {{Coupled quantum critical states in a circuit simulator}},
  author = {D. B. Karki and Andrew K. Mitchell},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.10048},
  eprint = {2610.10048},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.10048},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Coupled quantum critical states in a circuit simulator
AU  - D. B. Karki
AU  - Andrew K. Mitchell
PY  - 2026
DA  - 2026/10/07
PB  - arXiv
DO  - 10.48550/arxiv.2610.10048
UR  - https://arxiv.org/abs/2610.10048
AB  - Hybrid metal-semiconductor quantum circuits offer a controlled setting for realizing and probing strongly correlated quantum matter. A largely open question that may be addressed by such simulators is whether coupled critical states can combine into new non-Fermi liquid (NFL) phases. Inspired by the recent realization of a two-site charge-Kondo circuit [W. Pouse \textit{et al.}, \href{https://www.nature.com/articles/s41567-022-01905-4}{Nat. Phys. \textbf{19}, 492 (2023)}], we uncover the fate of coupled Kondo anyons emerging from the two-channel-Kondo critical point at each site. Bosonization and quantum Brownian motion methods yield the full quasiballistic phase diagram and low-temperature transport properties, while numerical renormalization group calculations resolve the complementary weak-coupling limit. Together, these provide a unified description, and reveal robust NFL phases with continuously tunable transport and susceptibility exponents. Stronger inter-site coupling ultimately produces a screened Fermi liquid.
ER  -