Consciousness Videos

The Quantum Mechanics of Time Travel



Institute for Quantum Computing

Dr. Seth Lloyd, an MIT professor and self-described “quantum mechanic,” describes the quantum mechanics behind time travel during a guest lecture at the Institute for Quantum Computing, University of Waterloo. Recorded on Nov. 4, 2010, this is the entire lecture entitled “Sending a Photon Backwards in Time.”

Dr. Lloyd also sat down for a one-on-one interview at IQC, during which he discusses the weirdness (and beautiful simplicity) of quantum mechanics, and the incredible importance of quantum information research. Excerpts from this interview are below:

Seth Lloyd on Quantum Weirdness:
http://www.youtube.com/watch?v=mvMx1baJwpA

Seth Lloyd on the Simple Beauty of Quantum Mechanics:
http://www.youtube.com/watch?v=DJQMM_5aS6k

Seth Lloyd on the Universe as a Quantum Computer:
http://www.youtube.com/watch?v=Qh8QfKVcvFA

Seth Lloyd on the Importance of Quantum Information Research:
http://www.youtube.com/watch?v=YK4P8kPh-g0

Find out more about IQC!
Website – https://uwaterloo.ca/institute-for-quantum-computing/
Facebook – https://www.facebook.com/QuantumIQC
Twitter – https://twitter.com/QuantumIQC

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24 thoughts on “The Quantum Mechanics of Time Travel
  1. Theory = you and your educated friend cannot figure it out. So you agree on your opinion. Then tell your students socialism is great. And let’s not forget. Jeffrey Epstein gave this guy money. That’s all I need to know

  2. So as the earth travels through the solar system, the solar system, travels through the universe. So we need to figure out a way to send a data stream out through space to bend around stars to be able to hit the earth at a time in the past known as our present. So then we need to search for that signal. The signal must be a constant signal relaying important information such as pandemics, wars, or catastrophic future events possibly preventable if known about in advance. Basically if we could send the signal out in all directions we could have a better chance of receiving a future stream hitting us now. Although the signal would most likely be altered enroute. So the received signal may be completely different than what was originally sent.

  3. Oh… dear, the Professor's medication has just about worn off leading to his demented laughter. Someone should have called an ambulance to escort the mild mannered Professor to the nearest Looney Bin for treatment. 🤗

    P.S.
    Please confiscate that infernal hockey stick that he weilds about before he takes someone's eye out! 😬

  4. One of many ,
    "Natural method "
    I think , when two massive blackhole are going to collide by spiraling around each other they both can drag spacetime so much so can create super compressed and mass free space between them ( in other word so called #wormhole ) so if spaceship could go through that center region " between two nearly colliding blackhole " that will cover more spacetime in relativity small space ( in other word kind of faster than light travel ) so can theoretically Into The #Past 🤔
    My thought !!

  5. Not sure I would approach time travel in such a way. In my opinion if really
    understand the subject you can build it as easily as the tires of your car.

  6. I think it's impossible to interact with yourself in the past because think about time traveling. To travel back in time is to reverse space time so you yourself would follow this reverse path and never meet an alternative you. Hollywood has shown us a bizarre spontaneous transmission version of time travel that's probably bullshit.. we can time travel into the future no problem but the way it works is by distorting time at different locations but nothing is ever teleported anywhere, things just move at a different rate. To travel back in time probably works the same way. But if we follow the instant transmission sound reverse time travel logic then I suppose maybe reverse time travel is the instant transmission type. And if everything in the universe is a sound wave.. even think about that word universe.. one verse.. one sound.. om….

  7. If determinism is true then you would be able to go back into the past and anything you did would just coincide with the natural timeline because you would be unable to control your actions and change anything at all.. your choice to go into the past would be predetermined and anything you did in the past would also be predetermined..

  8. Did you know that you can scream into the past to warn yourself of danger? Sound can travel into the past.. I did it one time. I heard a scream then I walked towards where I heard it then this animal came out from under a bridge at night and I screamed.. if you hear a scream it might be you in the future warning yourself . Do research on this.. but if you hear the scream does that mean you can't avoid going towards the danger or if you do choose to avoid the danger do you then not hear the scream so then not choose to avoid the danger? A paradox..

    I even just read an article where some scientists determined a sound they were testing displayed negative time. It instantly traveled faster than light backward in time.

    But if you scream into the past to warn yourself of danger in the future and the mere fact that you heard the scream is proof that you will inevitably encounter the danger, you have interacted with yourself in the past and in some way caused yourself to encounter the danger? But you haven't altered the past because it's all one timeline..

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