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Title: Metropolitan Quantum Key Distribution with Silicon Photonics

Photonic integrated circuits provide a compact and stable platform for quantum photonics. Here we demonstrate a silicon photonics quantum key distribution (QKD) encoder in the first high-speed polarization-based QKD field tests. The systems reach composable secret key rates of 1.039 Mbps in a local test (on a 103.6-m fiber with a total emulated loss of 9.2 dB) and 157 kbps in an intercity metropolitan test (on a 43-km fiber with 16.4 dB loss). Our results represent the highest secret key generation rate for polarization-based QKD experiments at a standard telecom wavelength and demonstrate photonic integrated circuits as a promising, scalable resource for future formation of metropolitan quantum-secure communications networks.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [4] ;  [5] ;  [2] ;  [2] ;  [2] ;  [5] ;  [4] ;  [6] ;  [2] ;  [2] ;  [4]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); MIT Lincoln Lab., Lexington, MA (United States)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  5. MIT Lincoln Lab., Lexington, MA (United States)
  6. Brigham Young Univ., Provo, UT (United States)
Publication Date:
Report Number(s):
SAND-2017-13521J
Journal ID: ISSN 2160-3308; PRXHAE; 659515
Grant/Contract Number:
AC04-94AL85000; NA0003525; FA8721-05-C-0002; FA8702-15-D-0001
Type:
Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Volume: 8; Journal Issue: 2; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
OSTI Identifier:
1432127
Alternate Identifier(s):
OSTI ID: 1429715