Robust and compact entanglement generation from diode-laser-pumped four-wave mixing

Journal Article · Mon Apr 11 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4947026· OSTI ID:1248784

Lawrie, B. J. ^[1]; Yang, Y. ^[2]; Eaton, M. ^[3]; Black, A. N. ^[4]; Pooser, R. C. ^[1]

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1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Information Science Group
2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Information Science Group; Wabish College, Crawfordsville, IN (United States). Dept. of Physics
3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Information Science Group; Southern Illinois Univ., Carbondale, IL (United States). Dept. of Physics
4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Information Science Group; Middle Tennessee State Univ., Murfreesboro, TN (United States). Department of Physics and Astronomy

Four-wave-mixing processes are now routinely used to demonstrate multi-spatial-mode Einstein- Podolsky-Rosen entanglement and intensity difference squeezing. Recently, diode-laser-pumped four-wave mixing processes have been shown to provide an affordable, compact, and stable source for intensity difference squeezing, but it was unknown if excess phase noise present in power amplifier pump configurations would be an impediment to achieving quadrature entanglement. Here, we demonstrate the operating regimes under which these systems are capable of producing entanglement and under which excess phase noise produced by the amplifier contaminates the output state. We show that Einstein-Podolsky-Rosen entanglement in two mode squeezed states can be generated by a four-wave-mixing source deriving both the pump field and the local oscillators from a tapered-amplifier diode-laser. In conclusion, this robust continuous variable entanglement source is highly scalable and amenable to miniaturization, making it a critical step toward the development of integrated quantum sensors and scalable quantum information processors, such as spatial comb cluster states.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS) (SC-27)
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 1248784
• Alternate ID(s): OSTI ID: 1420604; OSTI ID: 22591552
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 15 Vol. 108; ISSN APPLAB; ISSN 0003-6951
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS