Work

Influence of bias-voltage noise on the inelastic cooper-pair tunneling amplifier (ICTA)

Year: 2025

Type: article

Abstract: We experimentally show that the inelastic cooper-pair tunneling amplifier (ICTA), implementing a DC-powered parametric amplification scheme, can achieve gain and noise performance similar to that of AC-powered Josephson parametric amplifiers. Using experimental data and simulations, we show that the ICTA has near-quantum-limited noise as long as low-frequency voltage noise, expressed as broadening of the Josephson frequency line, is narrower than the amplification bandwidth. We observe a gain of 20 dB across a 11 MHz bandwidth with noise below 1.7 times the quantum limit when the full width at half maximum of the Josephson frequency linewidth is 5.6 MHz.

Source: Applied Physics Letters

DOI: 10.1063/5.0240842

Authors: U. Martel, R. Albert, F. Blanchet, J. Griesmar, G. Ouellet, H. Therrien, N. Nehra, N. Bourlet, A. Peugeot, M. Hofheinz

Institutions: Université de Sherbrooke, Institut quantique, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Grenoble, Institut Nanosciences et Cryogénie, Université Grenoble Alpes, École Normale Supérieure de Lyon, Centre National de la Recherche Scientifique

Language: English

Topic: Superconducting and THz Device Technology

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Funders: European Commission, Agence Nationale de la Recherche, Canada First Research Excellence Fund, Natural Sciences and Engineering Research Council of Canada, HORIZON EUROPE European Research Council

Awards: G1064020696, Quantum Electric Transport Meets Quantum Optics: Josephson Photonics with Strong Charge-Light Coupling

OpenAlex ID: W4407745830

FWCI: 0.587

Cites: 26

Cited by: 3

Related to: 10