Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Joshua Bienfang

Research interests:

  • Quantum communications
  • Single-photon detectors
  • Sources of entanglement
  • Quantum metrology

Biographical sketch:

Dr. Joshua C. Bienfang is a physicist in the Quantum Optics group in the Quantum Measurement Division of the Physical Measurement Laboratory. Before coming to NIST in 2002, Dr. Bienfang held a post-doctoral position at the Air Force Research Laboratory, at Kirtland AFB, New Mexico building high-power lasers for adaptive optics systems.

Awards and honors:

  • R&D 100 Award for High-Speed Fiber Quantum Key Distribution System, 2007
  • Presidential Early Career Awards for Scientists and Engineers, 2006
  • US Department of Commerce Bronze Medal for Superior Federal Service, 2005
  • University of New Mexico Tom L. Popejoy Dissertation Prize, 2003

Professional Activities:

  • CLEO/QELS subcommittee for Quantum Information, 2008
  • CLEO/QELS subcommittee for Enabling Technologies for Quantum Information, 2006


Switchable detector array scheme to reduce the effect of single-photon detector’s deadtime in a multi-bit/photon quantum link

Cong Liu, YONGXIONG Ren, Jiapeng Zhao, MOHAMMAD MIRHOSSEINI, SEYED RAFSANJANI, GUODONG XIE, Kai Pang, Zhe Zhao, Long Li, Joshua C. Bienfang, Alan L. Migdall, Todd Brun, Moshe Tur, Robert Boyd, Alan Wilner
We explore the use of a switchable single-photon detector (SPD) array to reduce the effect of individual SPDs’ deadtime for a multi-bit/photon quantum link such

A strong loophole-free test of local realism

Lynden K. Shalm, Evan Meyer-Scott, B. G. Christensen, Peter L. Bierhorst, Michael A. Wayne, Deny Hamel, Martin J. Stevens, Thomas Gerrits, Scott C. Glancy, Michael S. Allman, Kevin J. Coakley, Shellee D. Dyer, Adriana E. Lita, Varun B. Verma, Joshua C. Bienfang, Alan L. Migdall, Yanbao Zhang, William Farr, Francesco Marsili, Matthew D. Shaw, Jeffrey Stern, Carlos Abellan, Waldimar Amaya, Valerio Pruneri, Thomas Jennewein, Morgan Mitchell, P. G. Kwiat, Richard P. Mirin, Emanuel H. Knill, Sae Woo Nam
We present a loophole-free violation of local realism using entangled photon pairs. We ensure that all relevant events in our Bell test are spacelike separated
Created May 31, 2018