Abstract
To raise the repetition rate, a single-photon source based on Kerr quantum blockade in a cascaded quantum system is studied. Using the quantum trajectory method, we calculate and simulate the photon number distributions out of a two-cavity system. A high quality single-photon source can be achieved through optimizing parameters. The designed photon source is further applied to the decoy state quantum key distribution (QKD). With and without statistical fluctuation, the key rate can be both raised drastically.
Highlights
To raise the repetition rate, a single-photon source based on Kerr quantum blockade in a cascaded quantum system is studied
We find an enhanced probability of single photon occupancy, and simultaneously a reduced vacuum and multi-photon probability, which allows to relax the constraints on the repetition rate imposed by the cavity lifetime
We use the quantum trajectory method which is based on the evolution of a Monte Carlo wave function (MCWF) of small systems[20,21,22] and simulate the output photon number distributions in two-cavity systems
Summary
To raise the repetition rate, a single-photon source based on Kerr quantum blockade in a cascaded quantum system is studied. Limited by the cavity linewidth, the repetition rate of output light pulse is limited to sub GHz in the Kerr photon blockade system[19]. This proposal is to enhance the potential repetition rate of single-photon sources based on the principle of single-photon blockade in a single mode cavity with Kerr-type nonlinear response.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
