diy Physics Blog

  • Book
    • Book Contents
    • Adopt the Textbook
    • Back Cover
    • Instructor’s Guide
    • Software
    • Book Errata
  • About Us
  • Contact Us
  • Terms of Use
  • Privacy Policy

Category Archives: Entangled-Photon Source

Video of Shanni’s Lecture on Entangled Photon Generation at HaD SuperCon

Posted on November 30, 2015 by David Prutchi Posted in Entangled-Photon Source, Entanglement, QKD, Single-Photon Counting Modules (SPCMs)

Shanni_HaD_IMG_2111_600px

Shanni presented on “Construction of an Entangled Photon Source for Experimenting with Quantum Technologies” at the 2015 Hackaday SuperConference.

Her lecture has been uploaded by Hackaday and is available now available online.  CLICK HERE for the link to the HaD Blog and Video.

Shanni Prutchi presents at HaD SuperCon on Entangled Photon Generation

 

New Book by Prof. Mark Beck – Great Complement to Our diy Quantum Physics Book!

Posted on September 27, 2012 by David Prutchi Posted in Chapter 8 - Entanglement, Entangled-Photon Source, Single-Photon Counting Modules (SPCMs), Single-Photon Experiments, Uncategorized

Quantum Mechanics Theory and Experiment by Mark Beck, www.diyPhysics.comProf. Mark Beck from the Dept. of Physics at Whitman College recently published an excellent book titled “Quantum Mechanics: Theory and Experiment.”  It is written for an advanced undergraduate/graduate quantum mechanics class.  This book presents the theory in its full formalism (with thorough, high-level math), as well as describes five laboratory experiments that explore the use of entangled photons in the undergraduate lab.

Prof. Beck’s laboratory experiments use the same type of system as we describe in Chapter 8 of Exploring Quantum Physics Through Hands-On Projects, so if you are up to the math, we heartily recommend this book to continue your exploration with your entangled-photon system.

Continue reading→

Type I Downconversion Beta-Barium-Borate (BBO) Crystal Array for diy Entangled Photon Source

Posted on January 23, 2012 by David Prutchi Posted in Bell's Inequality Test, Chapter 8 - Entanglement, Entangled-Photon Source, Entanglement, Single-Photon Experiments

Photop BBO crystal array for diy entangled photon sourceOur diy entangled-photon source, shown in the book’s Figure 142,  uses two BBO crystals that support type I down-conversion that are mounted according to a design by Paul Kwiat and his colleagues at the Los Alamos National Laboratory.

The nonlinear crystal in our photon entangler comprises two 5 mm x 5 mm x 0.1 mm BBO crystals mounted face-to-face at an angle of 90 degrees to each other. As shown in the book’s Figure 140, pump photons polarized at 45 degrees produce two cones of entangled down-converted photons.

Continue reading→

405 nm Pump Laser for diy Entangled Photon Source

Posted on January 23, 2012 by David Prutchi Posted in Bell's Inequality Test, Chapter 8 - Entanglement, Entangled-Photon Source, Entanglement, Quantum Random Number Generation, Single-Photon Experiments

405 nm UV pump laser used in diy entangled photon source

This is the 405 nm pump laser used in the circuit shown in the book’s Figure 141.   The laser is built from a Blu Ray disk burner laser diode.  We drive the laser diode with 160 mA to produce around 100 mW of 405-nm polarized light.  The laser diode is capable of producing 250 mW, but we prefer to drive it much more conservatively. Continue reading→

Beam Diagram for Entangled-Photon Source

Posted on January 14, 2012 by David Prutchi Posted in Chapter 8 - Entanglement, Entangled-Photon Source, Entanglement, Single-Photon Experiments

diy Entangled photon source described in the book  "Exploring Quantum Physics through Hands-On Experiments" by David Prutchi Ph.D. and Shanni R. Prutchi

This picture supplements Figure 148 in the book.  The colors should help you visualize the paths of the beams in our entangled-photon source:  Violet – 405 nm pump laser beam; Pink – 810 nm signal and idler entangled-photon beams.  A detailed schematic diagram for the entangler is available in the book’s Figure 147.  Figure 149 shows the 405 nm beamstop. Continue reading→

quTools quED Entanglement Demonstrator

Posted on January 11, 2012 by David Prutchi Posted in Bell's Inequality Test, Chapter 8 - Entanglement, Entangled-Photon Source, Entanglement, Single-Photon Experiments
quTools' quED quantum entanglement demonstrator system
Image Credit: quTools

quTools of München, Germany is the maker of the quED quantum entangled state demonstrator system to generate and analyze polarization entangled photons.  This system is a professionally-manufactured version of the type of entangled-photon generator used by many universities, and similar to the diy version described in Chapter 8 of our book (Figure 148).

quED employs a spontaneous parametric down conversion process (type I or type II; collinear or non-collinear) to generate polarization entangled photon pairs. Fiber-coupled single photon detectors in connection with polarizing filters are used to detect the photon pairs, analyze their polarizations and verify their non-classical correlations. Continue reading→

Buy our book at Amazon.com

Navigate diyphysics.com

  • Book
    • Book Contents
    • Adopt the Textbook
    • Back Cover
    • Instructor’s Guide
    • Software
    • Book Errata
  • About Us
  • Contact Us
  • Terms of Use
  • Privacy Policy

Categories

  • Administrative
  • Book Chapters
    • Chapter 1 – Light as a Wave
    • Chapter 2 – Light as Particles
    • Chapter 3 – Atoms and Radioactvity
    • Chapter 4 – The Priciple of Quantum Physics
    • Chapter 5 – Wave-Particle Duality
    • Chapter 6 – The Uncertainty Principle
    • Chapter 7 – Schrödinger's Wave Equation
    • Chapter 8 – Entanglement
  • Experiments
    • Attenuation of Radiation
    • Bell's Inequality Test
    • Compton Scattering
    • Doppler Effect
    • e/m Measurement
    • Emission Spectrometry
    • Entanglement
    • Glow Discharge
    • Ionizing Radiation Detection
    • Maltese Cross CRT
    • Plasma Physics
    • QKD
    • Quantum Dots
    • Quantum Random Number Generation
    • Quantum Tunneling
    • Radio-Isotope Identification
    • Relativistic Time Dilation
    • Rutherford Alpha-Particle Scattering
    • Single-Electron Experiments
    • Single-Photon Experiments
    • Single-Slit Diffraction
    • Two-Slit Interference
    • β-Particle Magnetic Deflection
  • Instrumentation
    • CDV700 Pro Geiger-Müller Counter
    • Electron-Beam Tube
    • Entangled-Photon Source
    • Gunnplexer Transceiver
    • High-Voltage Power Supply
    • Lasers
    • Mach-Zehnder Interferometer
    • Magneto-Optical Trap
    • Marx Generators
    • MCA/PHA
    • Photomultipliers
    • Photon/Coincidence Counter
    • PMT/Scintillation Processor
    • Polarimetric Imaging
    • Polymeric Radiation Detector
    • Precision Clocks and Timers
      • Atomic Clock
      • GPS-Disciplined
    • Radioisotopes
    • Scintillation Detector
    • Single-Photon Counting Modules (SPCMs)
    • Single-Photon Imaging
    • Spectrometer
    • Thermal Camera
    • Ultraviolet Illuminators
    • Vacuum System
  • Medium Wave Infrared Imaging
  • Nuclear Magnetic Resonance NMR
  • Physics Humor
  • Theoretical Physics
  • Ultraviolet Imaging
  • Uncategorized

Educational Resources

  • ALPhA Advanced Laboratory Physics Association
  • American Journal of Physics
  • Circuit Cellar
  • Dr. Enrique Galvez' Correlated-Photon Experiments Guide
  • Dr. Mark Beck's Undergraduate QM Experiments
  • The Bell Jar

Blogroll

  • Dorith Prutchi's Professional Website
  • More of our projects at prutchi.com
  • My Blog on Implantable Devices
  • My Infrared-to-UV Photography Site

Pages

  • Book
    • Book Contents
    • Adopt the Textbook
    • Back Cover
    • Instructor’s Guide
    • Software
    • Book Errata
  • About Us
  • Contact Us
  • Terms of Use
  • Privacy Policy

Archives

  • November 2023
  • September 2023
  • May 2021
  • March 2021
  • July 2019
  • November 2018
  • October 2018
  • April 2018
  • March 2018
  • November 2016
  • October 2016
  • September 2016
  • July 2016
  • March 2016
  • December 2015
  • November 2015
  • October 2015
  • September 2015
  • August 2015
  • July 2015
  • February 2014
  • December 2013
  • July 2013
  • May 2013
  • April 2013
  • March 2013
  • February 2013
  • January 2013
  • December 2012
  • October 2012
  • September 2012
  • August 2012
  • June 2012
  • May 2012
  • April 2012
  • March 2012
  • February 2012
  • January 2012
  • December 2011

Categories

  • Administrative (9)
  • Book Chapters (61)
    • Chapter 1 – Light as a Wave (2)
    • Chapter 2 – Light as Particles (10)
    • Chapter 3 – Atoms and Radioactvity (27)
    • Chapter 4 – The Priciple of Quantum Physics (3)
    • Chapter 5 – Wave-Particle Duality (13)
    • Chapter 6 – The Uncertainty Principle (2)
    • Chapter 7 – Schrödinger's Wave Equation (7)
    • Chapter 8 – Entanglement (18)
  • Experiments (57)
    • Attenuation of Radiation (2)
    • Bell's Inequality Test (8)
    • Compton Scattering (8)
    • Doppler Effect (2)
    • e/m Measurement (3)
    • Emission Spectrometry (2)
    • Entanglement (12)
    • Glow Discharge (1)
    • Ionizing Radiation Detection (18)
    • Maltese Cross CRT (1)
    • Plasma Physics (1)
    • QKD (3)
    • Quantum Dots (1)
    • Quantum Random Number Generation (3)
    • Quantum Tunneling (2)
    • Radio-Isotope Identification (7)
    • Relativistic Time Dilation (1)
    • Rutherford Alpha-Particle Scattering (1)
    • Single-Electron Experiments (1)
    • Single-Photon Experiments (22)
    • Single-Slit Diffraction (1)
    • Two-Slit Interference (4)
    • β-Particle Magnetic Deflection (2)
  • Instrumentation (79)
    • CDV700 Pro Geiger-Müller Counter (7)
    • Electron-Beam Tube (4)
    • Entangled-Photon Source (6)
    • Gunnplexer Transceiver (2)
    • High-Voltage Power Supply (10)
    • Lasers (3)
    • Mach-Zehnder Interferometer (1)
    • Magneto-Optical Trap (1)
    • Marx Generators (3)
    • MCA/PHA (10)
    • Photomultipliers (15)
    • Photon/Coincidence Counter (4)
    • PMT/Scintillation Processor (9)
    • Polarimetric Imaging (4)
    • Polymeric Radiation Detector (1)
    • Precision Clocks and Timers (3)
      • Atomic Clock (2)
      • GPS-Disciplined (1)
    • Radioisotopes (1)
    • Scintillation Detector (14)
    • Single-Photon Counting Modules (SPCMs) (12)
    • Single-Photon Imaging (3)
    • Spectrometer (1)
    • Thermal Camera (1)
    • Ultraviolet Illuminators (3)
    • Vacuum System (2)
  • Medium Wave Infrared Imaging (1)
  • Nuclear Magnetic Resonance NMR (3)
  • Physics Humor (9)
  • Theoretical Physics (1)
  • Ultraviolet Imaging (1)
  • Uncategorized (28)

WordPress

  • Log in
  • WordPress
© diy Physics Blog