Title: Bell state analyzer for spectrally distinct photons

Abstract

We demonstrate a Bell state analyzer that operates directly on frequency mismatch. Based on electro-optic modulators and Fourier-transform pulse shapers, our quantum frequency processor design implements interleaved Hadamard gates in discrete frequency modes. Experimental tests on entangled-photon inputs reveal fidelities of $\sim \; <\#comment/>98\mathrm{\%\; <\#comment/>}$ for discriminating between the $|{\mathrm{\Psi \; <\#comment/>}}^{+}⟩\; <\#comment/>$ and $|{\mathrm{\Psi \; <\#comment/>}}^{-\; <\#comment/>}⟩\; <\#comment/>$ frequency-bin Bell states. Our approach resolves the tension between wavelength-multiplexed state transport and high-fidelity Bell state measurements, which typically require spectral indistinguishability.

Authors:

Lingaraju, Navin B. ;

• Search DOE PAGES for author "Lingaraju, Navin B."
• Search DOE PAGES for ORCID "0000-0001-8036-1022"

Lu, Hsuan-Hao ;

• Search DOE PAGES for author "Lu, Hsuan-Hao"
• Search DOE PAGES for ORCID "0000-0003-4009-0787"

Leaird, Daniel E.; Estrella, Steven ;

• Search DOE PAGES for author "Estrella, Steven"
• Search DOE PAGES for ORCID "0000-0002-0173-1281"

Lukens, Joseph M. ;

• Search DOE PAGES for author "Lukens, Joseph M."
• Search DOE PAGES for ORCID "0000-0001-9650-4462"

Weiner, Andrew M.

• Search DOE PAGES for author "Weiner, Andrew M."
• Search DOE PAGES for ORCID "0000-0002-1334-8183"

Publication Date:

Fri Mar 04 00:00:00 EST 2022

Research Org.:

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); Air Force Research Laboratory; National Science Foundation (NSF)

OSTI Identifier:

1847434

Alternate Identifier(s):

OSTI ID: 1854489

Grant/Contract Number:  

ASCR - Early Career Research Program; AC05-00OR22725; FA8750-20-P-1705; 1747426-DMR; 2034019-ECCS

Resource Type:

Published Article

Journal Name:

Optica

Additional Journal Information:

Journal Name: Optica Journal Volume: 9 Journal Issue: 3; Journal ID: ISSN 2334-2536

Publisher:

Optical Society of America

Country of Publication:

United States

Language:

English

Subject:

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS