MoRe superconducting nanowire single-photon detector atop of lithium niobate on insulator

A Aleksey Nevzorov (Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,) I Iliia Venediktov (Department of Physics, Moscow Pedagogical State University 2 , Moscow 119435,) V Vladislav Korovin (Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,) S Sergey Svyatodukh (Department of Physics, Moscow Pedagogical State University 2 , Moscow 119435,) N Nadezhda Titova (Department of Physics, Moscow Pedagogical State University 2 , Moscow 119435,) E Elmira Baeva (Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,) I Irina Florya (Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,) D Danil Kobtsev (Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,) A Anna Kolbatova (Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,) V Vadim Kovalyuk (Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,) G Gregory Goltsman (HSE University 3 , Moscow 101000,)

Abstract

We demonstrate an amorphous molybdenum–rhenium (MoRe) film on a thin-film lithium niobate substrate as an efficient superconducting nanowire single-photon detector (SNSPD) operating at T = 2.5 K. MoRe films were deposited by DC magnetron sputtering with a composite target of 56 at. % Mo and 44 at. % Re on lithium niobate on insulator substrates at room temperature. We investigated the spectral and temporal performance of MoRe SNSPDs as well as the detection regimes of one and multiple photons. The fabricated detector with a nanowire width of about 150 nm shows an internal detection efficiency of approximately 98% and 73.5% for the most crucial wavelengths for integration on the chip, 780 and 1550 nm, respectively. Our results show great potential for the use of MoRe for scalable and cryogenic tunable quantum photonic integrated circuits.

Article Details

Volume / Issue Vol. 127, Issue 17
Published October 23, 2025
ISSN 0003-6951
Publisher American Institute of Physics

Journal Info

Applied Physics Letters

American Institute of Physics

ISSN: 0003-6951 Physical Sciences

Authors (11)

A

Aleksey Nevzorov

Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,

I

Iliia Venediktov

Department of Physics, Moscow Pedagogical State University 2 , Moscow 119435,

V

Vladislav Korovin

Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,

S

Sergey Svyatodukh

Department of Physics, Moscow Pedagogical State University 2 , Moscow 119435,

N

Nadezhda Titova

Department of Physics, Moscow Pedagogical State University 2 , Moscow 119435,

E

Elmira Baeva

Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,

I

Irina Florya

Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,

D

Danil Kobtsev

Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,

A

Anna Kolbatova

Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,

V

Vadim Kovalyuk

Laboratory of Photonic Gas Sensors, University of Science and Technology MISIS 1 , Moscow 119049,

G

Gregory Goltsman

HSE University 3 , Moscow 101000,