Requirements / Specification Document

TITLE: Polarization-Entangled Photon Source

Requesting Laboratory / Division / Group:

Communications Technology Laboratory Quantum Communications Division Quantum Network Architecture and Protocols Group (676.02)

General Statement of Need:

This acquisition seeks to procure a polarization-entangled photon source based on spontaneous parametric down-conversion (SPDC). The source must be capable of accepting an external pump laser and generating high-quality polarization-entangled photon pairs.

Critically, the system should be built using a periodically poled lithium niobate (PPLN) waveguide, which offers efficient nonlinear conversion and compact integration.

Additionally, the source must include the ability to temperature-tune the phase-matching conditions, allowing for precise control over the output wavelengths and optimization of entanglement quality.

Item Specifications and Quantities:

Item 1: Polarization-Entangled Photon Source (Based on PPLN Waveguide) Quantity: 1 EACH Specifications: 1.1 Turnkey alignment-free source

1.2 Photon pairs wavelength centered at 1550 nm with 3 nm

bandwidth

1.3 Noise suppression >75 Db

1.4 Fidelity >98%

1.5 Pair generation rate >2 MHz

1.6 Two-photon interference visibility >98%

1.74 Based on type-2 nonlinear process

1.85 Input and output are fiber-coupled and terminated with

FC/APC connectors

1.96 Capability to connect an external temperature controller

1.10 Capability to take an external pump laser

1.11 Continuous Operation: Designed for reliable 24/7 operation

Procurement Support Information and Ancillary Services:

Section Requirements/Specifications

Planning Considerations ☒ N/A

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Mail Stop: 676.02 100 Bureau Dr Gaithersburg MD 20899

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Calibration

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Maintenance

[Describe Maintenance Requirements Per Item] Maintenance Plan Length: [i.e. 3 - Years] What is Included?

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NOTE TO VENDOR: To the maximum extent possible, include travel requirement estimates as part of pertinent sections above (Installation, Maintenance, Repair, etc.). Otherwise, Travel will be a separate line item, reimbursable per the Federal Travel Regulation.