High-fidelity conversion of photonic quantum information to telecommunication wavelength with superconducting single-photon detectors
Rikizo Ikuta, Hiroshi Kato, Yoshiaki Kusaka, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Mikio Fujiwara, Takashi Yamamoto, Masato Koashi, Masahide Sasaki, Zhen Wang, Nobuyuki Imoto
DOI 10.1103/PhysRevA.87.010301 · Physical Review A
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We experimentally demonstrate a high-fidelity visible-to-telecommunication wavelength conversion of a photon by using a solid-state-based difference frequency generation. In the experiment, one half of a picosecond visible entangled photon pair at 780 nm is converted to a 1522-nm photon, resulting in the entangled photon pair between 780 and 1522 nm. Using superconducting single-photon detectors with low dark count rates and small timing jitters, we selectively observed well-defined temporal modes containing the two photons. We achieved a fidelity of 0.93±0.04 after the wavelength conversion, indicating that our solid-state-based scheme can be used for faithful frequency down conversion of visible photons emitted from quantum memories composed of various media.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbN Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Tomography and state reconstruction with superconducting single-photon detectors
similarity 0.95J. J. Renema et al.
Source status unknown — claims are unverified
Improved Heralded Single-Photon Source with a Photon-Number-Resolving Superconducting Nanowire Detector
similarity 0.95Samantha I. Davis et al.
Source status unknown — claims are unverified
Design of NbN Superconducting Nanowire Single-Photon Detectors with Enhanced Infrared Detection Efficiency
similarity 0.94Q. Wang et al.
Source status unknown — claims are unverified
Multifunctional Superconducting Nanowire Quantum Sensors
similarity 0.94Benjamin J. Lawrie et al.
Source status unknown — claims are unverified
Interfacing Rydberg atoms with a chip-based superconducting microwave resonator using an ac-Stark-shifted single-photon transition
similarity 0.93L. L. Brown et al.
Source status unknown — claims are unverified
Photon-assisted vortex depairing in two-dimensional superconductors
similarity 0.93A. M. Kadin et al.
Source status unknown — claims are unverified