High optical efficiency and photon noise limited sensitivity of microwave kinetic inductance detectors using phase readout

Journal Article · Mon Nov 11 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4829657· OSTI ID:22254061

Janssen, R. M. J.,; Endo, A. ^[1]; Baselmans, J. J. A. ^[2]; Ferrari, L.; Yates, S. J. C. ^[3]; Baryshev, A. M. ^[3]; Klapwijk, T. M. ^[1]

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1. Kavli Institute of Nanoscience, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628CJ Delft (Netherlands)
2. SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584CA Utrecht (Netherlands)
3. SRON Netherlands Institute for Space Research, Landleven 12, 9747AD Groningen (Netherlands)

We demonstrate photon noise limited performance in both phase and amplitude readout in microwave kinetic inductance detectors (MKIDs) consisting of NbTiN and Al, down to 100 fW of optical power. We simulate the far field beam pattern of the lens-antenna system used to couple radiation into the MKID and derive an aperture efficiency of 75%. This is close to the theoretical maximum of 80% for a single-moded detector. The beam patterns are verified by a detailed analysis of the optical coupling within our measurement setup.

• OSTI ID: 22254061
• Journal Information: Applied Physics Letters, Vol. 103, Issue 20; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
ANTENNAS
APERTURES
BEAMS
EFFICIENCY
INDUCTANCE
MICROWAVE RADIATION
NOISE
PHOTONS
READOUT SYSTEMS
SENSITIVITY