Bell inequality experiment for a high brightness time-energy entangled source

Ian R. Nemitz; Jonathan Dietz; Evan J. Katz; Brian Vynhalek; Benjamin Child; Bertram M. Floyd; John D. Lekki

doi:10.1117/12.2509849

4 March 2019 Bell inequality experiment for a high brightness time-energy entangled source

Ian R. Nemitz, Jonathan Dietz, Evan J. Katz, Brian Vynhalek, Benjamin Child, Bertram M. Floyd, John D. Lekki

Proceedings Volume 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII; 109021U (2019) https://doi.org/10.1117/12.2509849
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

A periodically poled MgO – doped LiNbO₃ (MgO:LN) non-degenerate photon pair source is utilized for spontaneous parametric down-conversion of 532 nm photons into time-energy entangled pairs of 794 and 1614 nm photons. The entangled photons are separated using previously detailed sorting optics, such that each wavelength is independently directed through one of two modified Mach-Zehnder interferometers – also known as a Franson interferometer – after which they are fiber-optically guided to high-efficiency photon detectors. Output from the detectors is sent to a high resolution time tagger, where coincidences between the entangled photons are recorded. By varying the length of the long path in one Mach-Zehnder interferometer, it is possible to observe high visibility sinusoidal fringes in the measured coincidence rates (while no variation is seen in single photon detection rates). These fringes – due to interference between the photon probability amplitudes – are indicative of a violation of the Bell inequality, and confirm inconsistencies with local hidden variable theory for the correlations of the time-energy entangled photon pairs.

Citation Download Citation

Ian R. Nemitz, Jonathan Dietz, Evan J. Katz, Brian Vynhalek, Benjamin Child, Bertram M. Floyd, and John D. Lekki "Bell inequality experiment for a high brightness time-energy entangled source", Proc. SPIE 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII, 109021U (4 March 2019); https://doi.org/10.1117/12.2509849

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available