The puzzling tension between faster-than-light communication and quantum mechanics

แชร์
ฝัง
  • เผยแพร่เมื่อ 14 ม.ค. 2022
  • We look at a paper by Nicolas Gisin
    arxiv.org/abs/1407.8122
    which considers a variation of the superluminal (faster-than-light) communication setup where quantum measurements are made of an entangled pair of qubits. In this paper, an ensemble of qubits is considered, so that a macroscopically large signal is obtained on Bob's side. This reformulates a famous tension that exists between relativity and quantum mechanics, where it is consistent, but for entirely different reasons.
    Speed of spooky action at a distance
    www.nature.com/articles/natur...
    Our book which contains the definition of spin Q-functions
    www.cambridge.org/core/books/...
    arxiv.org/abs/2007.14601
    #quantummechanics #superluminal #fasterthanlight
  • วิทยาศาสตร์และเทคโนโลยี

ความคิดเห็น • 26

  •  2 ปีที่แล้ว +1

    17:57 those dumplings look goooooood

  • @Dewario
    @Dewario 2 ปีที่แล้ว

    This was delightful and relatively easy to follow, even for a non-physicist.
    Also, that polite Chinese thank you to the waiter was charming.

  • @Tabu11211
    @Tabu11211 2 ปีที่แล้ว +3

    god I want to go to school so bad

  • @alphaomega1089
    @alphaomega1089 2 ปีที่แล้ว

    It appears to be like prediction. Could you predict that ball would roll into the goal before it happened? The goalie could make a super human leap or a gust of wind could divert it. Another problem is fake messages being sent by the system by random collapse of those qubits. A0 R0 R1 A1 A0 R1 R1 R0 A1 R1 A0 A1 R1: which ones were sent by Alice (A) and which was not (R)?

  •  2 ปีที่แล้ว

    10:00 isn't it only true for finite number of spins? I would think that as their number tends to infinity the distribution would also approach 50:50, just like the finite number of coin tosses

    • @NYUQuantumTechnologyLab
      @NYUQuantumTechnologyLab  2 ปีที่แล้ว +1

      The fluctuations are always ~sqrt(N). What you are thinking of is the fractional imbalance, which is ~sqrt(N)/N= 1/sqrt(N) and this indeed goes to zero. But in absolute terms the variations are always there at the level of ~sqrt(N).

  • @genepozniak
    @genepozniak ปีที่แล้ว

    If the person on one end measures the spin of each particle faster or slower, the person on the other end would see the speed of change between each particle, right? E.g., person A makes 3 measurements in 3 seconds, which counts as 3 dots in Morse code, then makes 3 measurements in 6 seconds, which would count as 3 dashes. ???

  • @trevorloughlin1492
    @trevorloughlin1492 5 หลายเดือนก่อน

    Some clever maths in software on a normal pc with a quantum random number generator plugged in the USB gets around the "no communication theorem" and allows superluminal communication and prediction of any future event. The "many worlds" interpretation gets around any paradox, since when actions are taken to avoid unwanted futures, a new timeline will be predicted when my device is reset, and if this new timeline is also undesirable it can also be avoided. So all future possibilities can be examined (and altered) until the best outcome. It uses pure mathematical methods to create negative entropy creating improbable states, and could be an enabling technology for other new physics, such as making quantum events occur on a macroscopic scale in the physical world. UFO warp drive and localised time reversal might be possible.

    • @trevorloughlin1492
      @trevorloughlin1492 2 หลายเดือนก่อน

      24/03/2004 This is no longer a theory, I now have a working superluminal device capable of receiving intelligible information from the future at 100% accuracy.

  • @CACBCCCU
    @CACBCCCU 2 ปีที่แล้ว

    By allowing increased gravity to increase light-speed and vice-versa with natural feedback limiting; by quantizing gravity at low energy and Planck scale simultaneously; by viewing the lightless gravity of cold matter as being retro-reflectively focused between cold nucleons by a simple nucleon primary tri-quark orbital segregation gravitational messenger geometry resembling three cold-flattened mutually perpendicular gravitationally reflective surfaces (octet omni-retroreflector); by viewing local differences in lightspeed as deforming messenger geometry into a line instead of a point and/or by considering concentrated gravity messenger stacking --- these things are working just fine for me.

    • @CACBCCCU
      @CACBCCCU 2 ปีที่แล้ว

      Gravitational redshift is a local observation not a global observation, redshift is not dominated by initial frequency and doesn't travel unchanged, all gravitational effects in lensing and altitude shift are gradual over space but a series of experiments will easily alias to lead one to not reverse the sign of the frequency shift. Once the sign is reversed, things falling faster on heavier planets matches with light flowing faster on heavier planets, which should be nice but not for true GR fans. I rely here on a reverse riptide-like gravitational gradient effect to let gravity frequency shift reversing agree with the obvious inwardly deflected light curve seen with gravity lenses.

  • @CACBCCCU
    @CACBCCCU 2 ปีที่แล้ว

    I know there are entanglement experiments supposedly involving quasars, but there's no intelligent message transmission involved there. Noise is a factor, temperature is a factor, and tight control of both ends is of course critical. Maybe in assuming ER = EPR the short-circuiting scale somehow available in highly flat space is supposed to be unlimited but why should a space bridge defined by a lack of surrounding space be sensitive to noise? There's no legitimate reason to begin with an entanglement-based message transmission setup spanning "maybe many light years."

  • @ralphmalone8337
    @ralphmalone8337 ปีที่แล้ว

    This Video show s me that they are not on this yet - analysis incomplete... keep working ~

  • @calebromo1
    @calebromo1 ปีที่แล้ว

    Please, watch Theories of Everything with Curt Jaimungal and Salvatore Pais. Take a closer look at the math. "Its not new physics, its a new perspective on old physics."-Pais
    The Pais Effect is real.
    Get excited people!

  • @beachboardfan9544
    @beachboardfan9544 2 ปีที่แล้ว +2

    Damn Uni students these day always look absolutely thrashed!

    • @NYUQuantumTechnologyLab
      @NYUQuantumTechnologyLab  2 ปีที่แล้ว +2

      Thrashed, like beaten up? physics can beat you up sometimes

    • @beachboardfan9544
      @beachboardfan9544 2 ปีที่แล้ว

      @@NYUQuantumTechnologyLab 😄

    •  2 ปีที่แล้ว +1

      The colourful hats made much less of a difference than I originally estimated :/

    • @beachboardfan9544
      @beachboardfan9544 2 ปีที่แล้ว

      @ 😂

  • @williamwalker39
    @williamwalker39 5 หลายเดือนก่อน

    Superluminal communication is possible using nearfield light. The propagation delay of radio wave between 2 antennas as the antennas are moved from the nearfield to the farfield, shows that light propagates instantaneously in the nearfield and reduces to the speed of light in the farfield after about one wavelength. This corresponds to not only the phase and group speed, but also the information speed. The same occurs for gravitational fields. Relativity says nothing can go faster than the speed of light, but this wrong, why?
    Relativity is just an optical illusion, and because all of modern physics is based on Relativity, modern physics is fundamentally wrong and needs to be rethought. Relativity has a simple built in logical fallacy, and no theory based on a logical fallacy can be true, no matter how many experiments seem to prove it, or how many people say it is true. Below is a very simple logical argument highlighting the logical fallacy, using the same terminology Einstein used to derive Relativity.
    According to Relativity, observers on a moving train and on a stationary train platform will disagree on the size of the ""Train"" and the passage of time on the ""Train"". This is a complete logical contradiction if the size and the passage of time of the train are real. If the size of the train is real, then the ""Train"" can not be both contracted and not contracted. The same goes for the observed passage of time on the ""Train"". If these effects are observed, then the only possible conclusion is that it is an optical illusion. Things that are real must appear to be same from all frames of reference. If not, then by definition it is an illusion.
    Again the argument is very simple and it is the argument Einstein used to derive Relativity, and no acceleration is used in the argument. A train with length (L) traveling at constant velocity (v) relative a stationary observer on a station platform. According to Relativity, the stationary observer will see the train contracted (L/r, where r is the Relativistic gamma), whereas an observer on the train will see it not contracted (L). So the train is both contracted (L/r) and not contracted (L) depending on the observer. This is a complete contradiction (L not equal L/r) and can not be true if length is real. The same argument applies to passage of time on the Train, where both observers will disagree on the passage of time. If time is real, it can not be both dilated and not dilated (T not equal rT). If space and time are observed to be both large and small simultaneously for one inertial reference frame, such as the ""Train"", then it must be an optical illusion.
    This argument is only the tip of the iceberg. There is much more evidence including both theoretical and experimental, so please keep reading. Hi my name is Dr William Walker and I am a PhD physicist and have been investigating this topic for 30 years. It has been known since the late 1700s by Simone LaPlace that nearfield Gravity is instantaneous by analyzing the stability of the orbits of the planets about the sun. This is actually predicted by General Relativity by analyzing the propagating fields generated by an oscillating mass. In addition, General Relativity predicts that in the farfield Gravity propagates at the speed of light. The farfield speed of gravity was recently confirmed by LIGO.
    Recently it has been shown that light behaves in the same way by using Maxwell's equations to analyze the propagating fields generated my an oscillating charge. For more information search: William Walker Superluminal. This was experimentally confirmed by measuring radio waves propagating between 2 antennas and separating the antennas from the nearfield to the farfield, which occurs about 1 wavelength from the source. This behavior of gravity and light occurs not only for the phase and group speed, but also the information speed. This instantaneous nature of light and gravity near the source has been kept from the public and is not commonly known. The reason is that it shows that both Special Relativity and General Relativity are wrong! It can be easily shown that Instantaneous nearfield light yields Galilean Relativity and farfield light yields Einstein Relativity. This is because in the nearfield, gamma=1since c= infinity, and in the farfield, gamma= the Relativistic gamma since c= farfield speed of light. Since time and space are real, they can not depend on the frequency of light used. This is because c=wavelength x frequency, and 1 wavelength = c/frequency defines the nearfield from the farfield. Consequently Relativity is an optical illusion. Objects moving near the speed of light appear to contract in length and time appears to slow down, but it is just what you see using farfield light. Using nearfield light you will see that the object has not contracted and time has not changed. For more information: Search William Walker Relativity.
    Since General Relativity is based on Special Relativity, General Relativity must also be an optical illusion. Spacetime is flat and gravity must be a propagating field. Researchers have shown that in the weak field limit, which is what we only observe, General Relativity reduces to Gravitoelectromagnetism, which shows gravity can be modeled as 4 Maxwell equations similar in form to those for electromagnetic fields, yielding Electric and Magnetic components of gravity. This theory explains all gravitational effects as well as the instantaneous nearfield and speed of light farfield propagating fields. So gravity is a propagating field that can finally be quantized enabling the unification of gravity and quantum mechanics.
    The current interpretation of quantum mechanics makes no sense, involving particles that are not real until measured, and in a fuzzy superposition of states. On the other hand, the Pilot Wave interpretation of Quantum Mechanics makes makes much more sense, which says particles are always real with real positions and velocities. The particles also interact with an energetic quantum field that permeates all of space, forming a pilot wave that guides the particle. This simpler deterministic explanation explains all known quantum phenomena. The only problem is that the Pilot Wave is known to interact instantaneously with all other particles, and this is completely incompatible with Relativity, but is compatible with Galilean Relativity. But because of the evidence presented here, this is no longer a problem, and elevates the Pilot Interpretation to our best explanation of Quantum Mechanics.
    *TH-cam presentation of above argument:
    th-cam.com/video/sePdJ7vSQvQ/w-d-xo.html
    *Paper it is based on: William D. Walker and Dag Stranneby, A New Interpretation of Relativity, 2023: vixra.org/abs/2309.0145

  • @tonystark6997
    @tonystark6997 ปีที่แล้ว

    More than physical I felt it as an anti racist video.

  • @AppleVsGravity
    @AppleVsGravity ปีที่แล้ว

    Nice diversity hire.

  • @Markoul11
    @Markoul11 ปีที่แล้ว

    I don't agree with the proposition "that because that was due to entanglement it does not violate any physics"...Non-local phenomena are also non-causality phenomena in that sense they cannot be explained by special relativity which is a classical theory. Mainstream media's claim that because there is no exchange of information during quantum entanglement therefore special relativity is not violated could not be further from the truth. Of course SR which is local theory and does not allow any kind of instantaneous interplay at a distance, is violated by non-local quantum effects.The weird behavior of QM can easily explained by SR when extended to include superluminality as shown in these recent two papers by Dragan and Ekert (father of quantum encryption) who revisited the subject of possible superluninal interaction taking place :
    A. Dragan, A. Ekert, Quantum principle of relativity, New J. Phys. 22 (2020) 033038. doi.org/10.1088/1367-2630/ab76f7.
    A. Dragan, K. Debski, S. Charzynski, K. Turzynski, A. Ekert, Relativity of superluminal observers in 1 + 3 spacetime, Class. Quantum Gravity.40 (2023) 025013. doi.org/10.1088/1361-6382/acad60.
    (here is the youtube channel of Prof. Dragan, the first author of the above two papers in which he explains his theory th-cam.com/video/iObNfBo_7t4/w-d-xo.html )
    The papers our pointing out the unambiguous observation that was in front of us all these years but no one seemed to bother to investigate that the "weird" unatural behavior of Quantum Mechanics like superposition and nondeterminism non-causality etc. are actually characteristics reminiscent to superluminal behavior.
    Here is also a short preprint that outline introduces the novel idea that although normal matter and light are special relativistic not exceeding the speed of causality c in our spacetime, the vacuum nevertheless hosting matter and light within, could be a type of superluminal vibrational energy (i.e. vacuum quanta oscillate at frequencies of angular velocity higher than c) that could serve as a medium for superluminal interaction between quantum elementary particles of matter and light in our spacetime besides their normal interaction at c speed limit:
    zenodo.org/record/7622862#.ZFfjaHZBxdg

    • @williamwalker39
      @williamwalker39 5 หลายเดือนก่อน +1

      Relativity is just an optical illusion, and because all of modern physics is based on Relativity, modern physics is fundamentally wrong and needs to be rethought. Relativity has a simple built in logical fallacy, and no theory based on a logical fallacy can be true, no matter how many experiments seem to prove it, or how many people say it is true. Below is a very simple logical argument highlighting the logical fallacy, using the same terminology Einstein used to derive Relativity.
      According to Relativity, observers on a moving train and on a stationary train platform will disagree on the size of the ""Train"" and the passage of time on the ""Train"". This is a complete logical contradiction if the size and the passage of time of the train are real. If the size of the train is real, then the ""Train"" can not be both contracted and not contracted. The same goes for the observed passage of time on the ""Train"". If these effects are observed, then the only possible conclusion is that it is an optical illusion. Things that are real must appear to be same from all frames of reference. If not, then by definition it is an illusion.
      Again the argument is very simple and it is the argument Einstein used to derive Relativity, and no acceleration is used in the argument. A train with length (L) traveling at constant velocity (v) relative a stationary observer on a station platform. According to Relativity, the stationary observer will see the train contracted (L/r, where r is the Relativistic gamma), whereas an observer on the train will see it not contracted (L). So the train is both contracted (L/r) and not contracted (L) depending on the observer. This is a complete contradiction (L not equal L/r) and can not be true if length is real. The same argument applies to passage of time on the Train, where both observers will disagree on the passage of time. If time is real, it can not be both dilated and not dilated (T not equal rT). If space and time are observed to be both large and small simultaneously for one inertial reference frame, such as the ""Train"", then it must be an optical illusion.
      This argument is only the tip of the iceberg. There is much more evidence including both theoretical and experimental, so please keep reading. Hi my name is Dr William Walker and I am a PhD physicist and have been investigating this topic for 30 years. It has been known since the late 1700s by Simone LaPlace that nearfield Gravity is instantaneous by analyzing the stability of the orbits of the planets about the sun. This is actually predicted by General Relativity by analyzing the propagating fields generated by an oscillating mass. In addition, General Relativity predicts that in the farfield Gravity propagates at the speed of light. The farfield speed of gravity was recently confirmed by LIGO.
      Recently it has been shown that light behaves in the same way by using Maxwell's equations to analyze the propagating fields generated my an oscillating charge. For more information search: William Walker Superluminal. This was experimentally confirmed by measuring radio waves propagating between 2 antennas and separating the antennas from the nearfield to the farfield, which occurs about 1 wavelength from the source. This behavior of gravity and light occurs not only for the phase and group speed, but also the information speed. This instantaneous nature of light and gravity near the source has been kept from the public and is not commonly known. The reason is that it shows that both Special Relativity and General Relativity are wrong! It can be easily shown that Instantaneous nearfield light yields Galilean Relativity and farfield light yields Einstein Relativity. This is because in the nearfield, gamma=1since c= infinity, and in the farfield, gamma= the Relativistic gamma since c= farfield speed of light. Since time and space are real, they can not depend on the frequency of light used. This is because c=wavelength x frequency, and 1 wavelength = c/frequency defines the nearfield from the farfield. Consequently Relativity is an optical illusion. Objects moving near the speed of light appear to contract in length and time appears to slow down, but it is just what you see using farfield light. Using nearfield light you will see that the object has not contracted and time has not changed. For more information: Search William Walker Relativity.
      Since General Relativity is based on Special Relativity, General Relativity must also be an optical illusion. Spacetime is flat and gravity must be a propagating field. Researchers have shown that in the weak field limit, which is what we only observe, General Relativity reduces to Gravitoelectromagnetism, which shows gravity can be modeled as 4 Maxwell equations similar in form to those for electromagnetic fields, yielding Electric and Magnetic components of gravity. This theory explains all gravitational effects as well as the instantaneous nearfield and speed of light farfield propagating fields. So gravity is a propagating field that can finally be quantized enabling the unification of gravity and quantum mechanics.
      The current interpretation of quantum mechanics makes no sense, involving particles that are not real until measured, and in a fuzzy superposition of states. On the other hand, the Pilot Wave interpretation of Quantum Mechanics makes makes much more sense, which says particles are always real with real positions and velocities. The particles also interact with an energetic quantum field that permeates all of space, forming a pilot wave that guides the particle. This simpler deterministic explanation explains all known quantum phenomena. The only problem is that the Pilot Wave is known to interact instantaneously with all other particles, and this is completely incompatible with Relativity, but is compatible with Galilean Relativity. But because of the evidence presented here, this is no longer a problem, and elevates the Pilot Interpretation to our best explanation of Quantum Mechanics.
      *TH-cam presentation of above argument:
      th-cam.com/video/sePdJ7vSQvQ/w-d-xo.html
      *Paper it is based on: William D. Walker and Dag Stranneby, A New Interpretation of Relativity, 2023: vixra.org/abs/2309.0145