A delayed-choice quantum eraser experiment, first performed by Yoon-Ho Kim, R. Yu, S. P. Kulik, Y. H. Shih and Marlan O. Scully, and reported in early 1999, is an elaboration on the quantum eraser experiment that incorporates concepts considered in John Archibald Wheeler's delayed-choice experiment. The experiment was designed to investigate peculiar consequences of the well-known double-slit experiment in quantum mechanics, as well as the consequences of quantum entanglement. The delayed-choice quantum eraser experiment investigates a paradox. If a photon manifests itself as though it had come by a single path to the detector, then "common sense" (which Wheeler and others challenge) says that it must have entered the double-slit device as a particle. If a photon manifests itself as though it had come by two indistinguishable paths, then it must have entered the double-slit device as a wave. Accordingly, if the experimental apparatus is changed while the photon is in mid‑flight, the photon may have to revise its prior "committment" as to whether to be a wave or a particle. Wheeler pointed out that when these assumptions are applied to a device of interstellar dimensions, a last-minute decision made on Earth on how to observe a photon could alter a situation established millions or even billions of years earlier. While delayed-choice experiments have confirmed the seeming ability of measurements made on photons in the present to alter events occurring in the past, this requires a non-standard view of quantum mechanics. If a photon in flight is interpreted as being in a so-called "superposition of states", i.e. if it is interpreted as something that has the potentiality to manifest as a particle or wave, but during its time in flight is neither, then there is no time paradox. This is the standard view, and recent experiments have supported it. (Wikipedia).
Delayed Choice Quantum Eraser - Quantum Physics
Quantum physics at its most profound: Delayed Choice Quantum Eraser experiment and its implications.
From playlist Physics
The Delayed Choice Quantum Eraser, Debunked
Check out the math & physics courses that I mentioned (many of which are free!) and support this channel by going to https://brilliant.org/Sabine/ where you can create your Brilliant account. The first 200 will get 20% off the annual premium subscription. The delayed choice quantum eraser
From playlist Understanding Quantum Mechanics
The super bizarre quantum eraser experiment
The quantum eraser experiment is one of the weirdest phenomena that has ever been observed. It seems that quantum mechanics mixes past and future together. In this video, Fermilab’s Dr. Don takes you through this quantum conundrum. Quantum mechanics and the double slit experiment: https:
From playlist Videos by Don Lincoln
Photons, Entanglement, and the Quantum Eraser
Do quantum particles actually know if they're being watched like the double-slit experiment suggests? Does the delayed-choice quantum eraser finally prove this? No, but let's ask some better questions and see what's going on. ________________________________ VIDEO ANNOTATIONS/CARDS How do
From playlist Quantum Physics
How the Quantum Eraser Rewrites the Past | Space Time | PBS Digital Studios
Try Audible: http://www.audible.com/spacetime Causality is meant to move in one direction: forward. But the Quantum Eraser experiment seems to reverse causality. How and why can this happen and what are the implications of this experiment on how we understand Quantum Mechanics and our gre
From playlist Space Time!
http://AllSignalProcessing.com for more great signal-processing content: ad-free videos, concept/screenshot files, quizzes, MATLAB and data files. Practical requirements for an analog anti-aliasing filter to bandlimit continuous-time signals before sampling.
From playlist Sampling and Reconstruction of Signals
http://AllSignalProcessing.com for more great signal processing content, including concept/screenshot files, quizzes, MATLAB and data files. Noncausal filtering of stored data to obtain zero-phase response using the time-reversal property of the DFT, as implemented by the "filtfilt" comma
From playlist Introduction to Filter Design
Quantum Eraser Lottery Challenge
Matt challenges you to use quantum physics to win the lottery. Are you up to the task? Previous Episode on Quantum Eraser https://www.youtube.com/watch?v=8ORLN_KwAgs Get your own Space Time tshirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime E
From playlist Space Time Challenge Videos! (And Answers!)
Is There a Fifth Fundamental Force? + Quantum Eraser Answer
Has a fifth fundamental force been discovered and how will this effect our understanding of the universe? Get your own Space Time tshirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit:
From playlist Space Time Challenge Videos! (And Answers!)
Quantum Entanglement and the Great Bohr-Einstein Debate | Space Time | PBS Digital Studios
For those of you in New York City you can check out Matt live at PBS Nerd Night at the NYC YouTube Space on Thursday night September 22nd. Hope to see you there. to.pbs.org/nerdnight Albert Einstein strongly disagreed with Niels Bohr when it came to Bohr’s interpretation of quantum mecha
From playlist Space Time!
Quantum field theory, Lecture 2
This winter semester (2016-2017) I am giving a course on quantum field theory. This course is intended for theorists with familiarity with advanced quantum mechanics and statistical physics. The main objective is introduce the building blocks of quantum electrodynamics. Here in Lecture 2
From playlist Quantum Field Theory
Anne Broadbent - Information-Theoretic Quantum Cryptography Part 2 of 2 - IPAM at UCLA
Recorded 27 July 2022. Anne Broadbent of the University of Ottawa presents "Information-Theoretic Quantum Cryptography" at IPAM's Graduate Summer School Post-quantum and Quantum Cryptography. Abstract: These lectures are an introduction to the interplay between quantum information and cryp
From playlist 2022 Graduate Summer School on Post-quantum and Quantum Cryptography
Limits on spectral resolution measurements by (...) - A. Retzker - PRACQSYS 2018 - CEB T2 2018
Alex Retzker (D Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem, Israel) / 04.07.2018 Limits on spectral resolution measurements by quantum probes for nano NMR The limits of frequency resolution in nano NMR experiments have been discussed extensively in recent years
From playlist 2018 - T2 - Measurement and Control of Quantum Systems: Theory and Experiments
Fascinating world of photons, superposition and entanglement by Urbasi Sinha
Kaapi with Kuriosity Fascinating world of photons, superposition and entanglement by Urbasi Sinha (Quantum Information and Computing (QuIC) laboratory at Raman Research Institute, Bengaluru) 4pm to 6pm Sunday, 25 February 2018 J. N. Planetarium, Sri T. Chowdaiah Road, High Grounds, Banga
From playlist Kaapi With Kuriosity (A Monthly Public Lecture Series)
This Laser Turns Infrared into BLUE
With powerful enough lasers, the world starts behaving very differently. Using a nonlinear optical process called second harmonic generation you can merge pairs of photons in a laser beam to create a single photon with twice the energy. This means that one color of light is turned into ano
From playlist Physics