QUANTUM LIMITED HETERODYNE-DETECTION IN SUPERCONDUCTING NONLINEAR TRANSMISSION-LINES AT SUBMILLIMETER WAVELENGTHS

被引：30

作者：

TONG, CYE ^{[1
]}

BLUNDELL, R ^{[1
]}

BUMBLE, B ^{[1
]}

STERN, JA ^{[1
]}

LEDUC, HG ^{[1
]}

机构：

[1] CALTECH,JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109

来源：

APPLIED PHYSICS LETTERS | 1995年 / 67卷 / 09期

关键词：

D O I：

10.1063/1.114405

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A non-linear superconducting transmission line has been successfully employed in heterodyne detection of sub-millimeter waves. In our experiments an Nb/Al/AlOx/Nb tunnel junction, measuring 0.15 x 40 mu m, with a critical current density of about 2500 A/cm(2) is used as a distributed mixer element. We have demonstrated that quantum limited sensitivity can be achieved with this type of device. At 460 GHz, a Y-factor of 2.5 has been recorded, corresponding to a double-side-band receiver noise temperature of 80 K, The double-side-band conversion loss is about 1 dB and the mixer noise temperature is estimated to be 18(+/- 10) K. (C) 1995 American Institute of Physics.

引用

页码：1304 / 1306

页数：3

共 14 条

[1]

BARONE A, 1982, PHYSICS APPLICATIONS

[2] UNDERSTANDING NOISE IN SIS RECEIVERS [J].

BLUNDELL, R ;

MILLER, RE ;

GUNDLACH, KH .

INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES, 1992, 13 (01) :3-14

[3] SUBMILLIMETER RECEIVERS FOR RADIO ASTRONOMY [J].

BLUNDELL, R ;

TONG, CYE .

PROCEEDINGS OF THE IEEE, 1992, 80 (11) :1702-1720

[4]

BLUNDELL R, 1993, IEEE T MICROWAVE THE, V43, P933

[5]

BLUNDELL R, IN PRESS 6TH P INT S

[6]

DELANGE M, 1995, J APPL PHYS, V77, P1795

[7] A TECHNIQUE FOR NOISE MEASUREMENTS OF SIS RECEIVERS [J].

KE, Q ;

FELDMAN, MJ .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1994, 42 (04) :752-755

[8] OPTIMUM SOURCE CONDUCTANCE FOR HIGH-FREQUENCY SUPERCONDUCTING QUASI-PARTICLE RECEIVERS [J].

KE, Q ;

FELDMAN, MJ .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1993, 41 (04) :600-604

[9] SOME FUNDAMENTAL AND PRACTICAL LIMITS ON BROAD-BAND MATCHING TO CAPACITIVE DEVICES, AND THE IMPLICATIONS FOR SIS MIXER DESIGN [J].

KERR, AR .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1995, 43 (01) :2-13

[10] SOME RECENT DEVELOPMENTS IN THE DESIGN OF SIS MIXERS [J].

KERR, AR ;

PAN, SK .

INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES, 1990, 11 (10) :1169-1187

← 1 2 →