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@article{WOS:001776257400001,
title = {Gate-Tunable Photoresponse of Graphene Josephson Junctions at Terahertz
Frequencies},
author = {Xiangyu Zhou and Igor Gayduchenko and Andrei Kudriashov and Kirill Shein and Anton Kuksov and Leonid Elesin and Mikhail Kravtsov and Artur Shilov and Olga Popova and Subhajit Jana and Kostya S Novoselov and Takashi Taniguchi and Kenji Watanabe and Gregory Goltsman and Denis A Bandurin},
doi = {10.1021/acs.nanolett.6c01483},
times_cited = {0},
issn = {1530-6984},
year = {2026},
date = {2026-06-01},
journal = {NANO LETTERS},
volume = {26},
number = {22},
pages = {7435-7442},
publisher = {AMER CHEMICAL SOC},
address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
abstract = {Graphene Josephson junctions (JJs) are promising platforms for broadband
quantum sensing because graphene combines frequency-independent
absorption, ultralow electronic heat capacity, and weak electron-phonon
coupling. While previous studies focused on microwave and infrared
regimes, the terahertz (THz) range-where highly sensitive quantum
detectors remain scarce-has largely remained unexplored. Here, we
demonstrate a gate-tunable THz photoresponse in graphene JJs.
Low-intensity THz illumination strongly suppresses the critical current,
generating a pronounced photovoltage under current bias. From
photovoltage measurements and independent electron thermometry, we
extract a responsivity of 88 kV W-1 and a noise-equivalent power of 45
aW Hz(-1/2) at 1.7 K. In addition, the hysteretic regime that persists
up to 0.9 K suggests a possible route toward single-photon THz detection
above millikelvin temperatures. Our results establish graphene JJs as
promising candidates for cryogenic THz quantum sensing.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{WOS:001508114400008,
title = {Non-Majorana origin of anomalous current-phase relation and Josephson
diode effect in Bi2SE3/NbSe2 Josephson
junctions},
author = {Andrei Kudriashov and Xiangyu Zhou and Razmik A Hovhannisyan and Alexander S Frolov and Leonid Elesin and Yi Bo Wang and Ekaterina V Zharkova and Takashi Taniguchi and Kenji Watanabe and Zheng Liu and Kostya S Novoselov and Lada V Yashina and Xin Zhou and Denis A Bandurin},
doi = {10.1126/sciadv.adw6925},
times_cited = {11},
year = {2025},
date = {2025-06-01},
journal = {SCIENCE ADVANCES},
volume = {11},
number = {24},
publisher = {AMER ASSOC ADVANCEMENT SCIENCE},
address = {1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA},
abstract = {Josephson junctions (JJs) are key to superconducting quantum
technologies and the search for self-conjugate quasiparticles
potentially useful for fault-tolerant quantum computing. In topological
insulator (TI)-based JJs, measuring the current-phase relation (CPR) can
reveal unconventional effects such as Majorana bound states (MBS) and
nonreciprocal transport. However, reconstructing CPR as a function of
magnetic field has not been attempted. Here, we present a platform for
field-dependent CPR measurements in planar JJs made of NbSe2 and
few-layer Bi2Se3. When a flux quantum Phi 0 threads the junction, we
observe anomalous peak-dip CPR structure and nonreciprocal supercurrent
flow. We show that these arise from a nonuniform supercurrent
distribution that also leads to a robust and tunable Josephson diode
effect. Furthermore, despite numerous previous studies, we find no
evidence of MBS. Our results establish magnetic field-dependent CPR as a
powerful probe of TI-based superconducting devices and offer design
strategies for nonreciprocal superconducting electronics.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}