Widely Tunable, Nondegenerate Three-Wave Mixing Microwave Device Operating near the Quantum Limit - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2012

Widely Tunable, Nondegenerate Three-Wave Mixing Microwave Device Operating near the Quantum Limit

Résumé

We present the first experimental realization of a widely frequency tunable, nondegenerate three-wave mixing device for quantum signals at gigahertz frequency. It is based on a new superconducting building block consisting of a ring of four Josephson junctions shunted by a cross of four linear inductances. The phase configuration of the ring remains unique over a wide range of magnetic fluxes threading the loop. It is thus possible to vary the inductance of the ring with flux while retaining a strong, dissipation-free, and noiseless nonlinearity. The device has been operated in amplifier mode, and its noise performance has been evaluated by using the noise spectrum emitted by a voltage-biased tunnel junction at finite frequency as a test signal. The unprecedented accuracy with which the crossover between zero-point fluctuations and shot noise has been measured provides an upper bound for the noise and dissipation intrinsic to the device.
Fichier principal
Vignette du fichier
tunableJPC.pdf (1.38 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-00700677 , version 1 (23-05-2012)
hal-00700677 , version 2 (24-05-2012)

Identifiants

Citer

Nicolas Roch, Emmanuel Flurin, Francois Nguyen, Pascal Morfin, Philippe Campagne-Ibarcq, et al.. Widely Tunable, Nondegenerate Three-Wave Mixing Microwave Device Operating near the Quantum Limit. Physical Review Letters, 2012, 108, pp.147701. ⟨10.1103/PhysRevLett.108.147701⟩. ⟨hal-00700677v1⟩

Collections

LPA LPA-QUANT
771 Consultations
216 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More