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Search Publications by: Adriana E. Lita (Fed)

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Displaying 76 - 100 of 167

Photon-number uncertainty in a superconducting transition-edge sensor beyond resolved-photon-number determination

September 10, 2014
Author(s)
Zachary H. Levine, Boris L. Glebov, Alan L. Migdall, Thomas Gerrits, Brice R. Calkins, Adriana E. Lita, Sae Woo Nam
As part of an effort to extend fundamental single-photon measurements into the macroscopic regime, we explore how best to assign photon-number uncertainties to output waveforms of a superconducting Transition Edge Sensor (TES) and how those assignments

Superconducting nanowire single photon detectors fabricated from an amorphous Mo0.75Ge0.25 thin-film

July 15, 2014
Author(s)
Varun B. Verma, Adriana E. Lita, Michael R. Vissers, Francesco Marsili, David P. Pappas, Richard P. Mirin, Sae Woo Nam
We present the characteristics of superconducting nanowire single photon detectors (SNSPDs) fabricated from amorphous Mo0.75Ge0.25 thin -films. Fabricated devices show a saturation of the internal detection efficiency at temperatures below 1 K, with system

Photon-Efficient High-Dimensional Quantum Key Distribution

June 12, 2014
Author(s)
Tian Zhong, Hongchao Zhou, Ligong Wang, Gregory Wornell, Zheshen Zhang, Jeffrey Shapiro, Franco N. Wong, Rob Horansky, Varun Verma, Adriana Lita, Richard Mirin, Thomas Gerrits, Sae Woo Nam, Alessandro Restelli, Joshua Bienfang, Francesco Marsili, Matthew Shaw
We demonstrate two high-dimensional QKD protocols - secure against collective Gaussian attacks - yielding up to 8.6 secure bits per photon and 6.7 Mb/s throughput, with 6.9 bits per photon after transmission through 20 km of fiber.

A four-pixel single-photon pulse-position array fabricated from WSi superconducting nanowire single- photon detectors

February 3, 2014
Author(s)
Varun B. Verma, Robert D. Horansky, Francesco Marsili, Jeffrey Stern, Matthew Shaw, Adriana E. Lita, Richard P. Mirin, Sae Woo Nam
We demonstrate a scalable readout scheme for an infrared single-photon pulse-position camera consisting of WSi superconducting nanowire single-photon detectors. For an N × N array, only 2 × N wires are required to obtain the position of a detection event

Detection-Loophole-Free Test of Quantum Nonlocality, and Applications

September 26, 2013
Author(s)
B. G. Christensen, Kevin McCusker, Joseph Altepeter, Brice R. Calkins, Thomas Gerrits, Adriana Lita, Aaron J. Miller, Krister Shalm, Sae Woo Nam, P. G. Kwiat
We present a source of entangled photons that violates a Bell inequality free of the "fair-sampling" assumption, by over 50 standard deviations, and with enough "efficiency" overhead to eventually perform a fully loophole-free test of local realism. The

High quantum-efficiency photon-number-resolving detector for photonic on-chip information processing

September 18, 2013
Author(s)
Brice R. Calkins, Paolo L. Mennea, Adriana E. Lita, Benjamin Metcalf, Steven Kolthammer, Antia A. Lamas-Linares, Justin Spring, Peter C. Humphreys, Richard P. Mirin, James Gates, Peter Smith, Ian Walmsley, Thomas Gerrits, Sae Woo Nam
The integrated optical circuit is a promising architecture for the realization of complex quantum optical states and information networks. One element that is required for many of these applications is a high-efficiency photon detector capable of photon

Photon-Number-Resolved Detection of Photon-Subtracted Thermal Light

June 18, 2013
Author(s)
Jingyun Fan, Yanhua (. Zhai, Francisco E. Becerra Chavez, Boris L. Glebov, Adriana E. Lita, Brice R. Calkins, Thomas Gerrits, Sae Woo Nam, Alan L. Migdall
We examine the photon statistics of photon-subtracted thermal light using photonnumberresolving detection. We show the photon-number distribution transforms from a Bose-Einstein distribution to a Poisson distribution as the number of photons subtracted

Nanosecond-scale timing jitter in transition edge sensors at telecom and visible wavelengths

June 10, 2013
Author(s)
Antia A. Lamas-Linares, Brice R. Calkins, Nathan A. Tomlin, Thomas Gerrits, Adriana Lita, Joern Beyer, Richard Mirin, Sae Woo Nam
Transition edge sensors (TES) have the highest reported efficiencies (> 98%) for single photon detection in the visible and near infrared. Experiments in quantum information and foundations of physics that rely on this efficiency have started incorporating

Bell violation using entangled photons without the fair-sampling assumption

April 14, 2013
Author(s)
Marissa Giustina, Alexandra Mech, Sven Ramelow, Bernhard Wittman, Johannes Keffler, Joern Beyer, Adriana Lita, Thomas Gerrits, Sae Woo Nam, Rupert Ursin, Anton Zeilinger, Brice R. Calkins
The violation of a Bell inequality is an experimental observation that forces the abandonment of a local realistic viewpoint - namely, one in which physical properties are (probabilistically) defined before and independently of measurement, and in which no

Highly efficient heralding of entangled single photons

March 11, 2013
Author(s)
Sven Ramelow, Alexandra Mech, Marissa Giustina, Simon Groeblacher, Witlef Wieczorek, Adriana Lita, Brice R. Calkins, Thomas Gerrits, Sae Woo Nam, Anton Zeilinger, Rupert Ursin
Single photons are an important prerequisite for a broad spectrum of quantum optical applications. We experimentally demonstrate a heralded single-photon source based on spontaneous parametric down- conversion in collinear bulk optics, and fiber-coupled

Detecting Single Infrared Photons with 93 % System Efficiency

February 25, 2013
Author(s)
Francesco F. Marsili, Varun B. Verma, Jeffrey A. Stern, Sean D. Harrington, Adriana E. Lita, Thomas Gerrits, Igor Vayshenker, Burm Baek, Matthew D. Shaw, Richard P. Mirin, Sae Woo Nam
Single-photon detectors (SPDs) are nonlinear transducers that respond to the absorption of one or more photons with an electrical signal1. SPDs at near infrared wavelengths with high system detection efficiency (> 90%), low dark count rate (

Joint Spectral Measurements at the Hong-Ou-Mandel Interference Dip

January 29, 2013
Author(s)
Thomas Gerrits, Francesco F. Marsili, Varun B. Verma, Adriana E. Lita, Antia A. Lamas-Linares, Jeffrey A. Stern, Matthew Shaw, William Farr, Richard P. Mirin, Sae Woo Nam
We employed a 2 channel single-photon detection system with high detection efficiency and low jitter to characterize the joint spectral distribution (JSD) of the correlated photons emerging from a Hong-Ou-Mandel interference arrangement. We show the JSDs