Antibunched Photons from Inelastic Cooper-Pair Tunneling
Artikel i vetenskaplig tidskrift, 2015

We demonstrate theoretically that charge transport across a Josephson junction, voltage-biased through a resistive environment, produces antibunched photons. We develop a continuous-mode description of the emitted radiation field in a semi-infinite transmission line terminated by the Josephson junction. Within a perturbative treatment in powers of the tunneling coupling across the Josephson junction, we capture effects originating in charging dynamics of consecutively tunneling Cooper pairs. We find that within a feasible experimental setup the Coulomb blockade provided by high zero-frequency impedance can be used to create antibunched photons at a very high rate and in a very versatile frequency window ranging from a few GHz to a THz.

Författare

Juha Leppäkangas

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Mikael Fogelström

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

A. Grimm

M. Hofheinz

M. Marthaler

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 115

Ämneskategorier

Fysik

DOI

10.1103/PhysRevLett.115.027004