The future of measurement with quantum sensors - with The National Physical Laboratory

Ғылым және технология

What are quantum sensors? And how do they enable precision measurements of gravity, inertial forces, and magnetic fields?
Watch the Q&A (exclusively for members) here: • Q&A: The future of mea...
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This lecture was recorded at the Ri on 29 November 2023, in partnership with The National Physical Laboratory.
Discover how atomic magnetometry is used to monitor the spin of atoms in external magnetic fields and how NPL is supporting the development of portable magnetometers for instance for non-destructive imaging of structural defects. Learn about atom interferometry and how it is being used to measure gravity, linear accelerations, and rotations.
Find out about NPL's leading-edge research in this area, including their work on the measurement behind gravity gradiometers and absolute gravimeters based on a double rubidium atomic fountain, which has advantages over classical devices.
Take advantage of this opportunity to delve into the exciting world of quantum sensors and their applications in precision measurement.
Prof Jan-Theodoor (JT) Janssen FREng FinstP FIET is the Chief Scientist at NPL and a member of the executive team. JT joined NPL in 1998 and is distinguished for the application of quantum technologies and an NPL Fellow in Quantum Electrical Metrology. His research involves a wide range of topics in solid-state physics applied to metrology applications. JT launched the National Graphene Metrology Centre (NGMC), the role of which is to develop metrology and standardisation for the nascent graphene industry. He is also a Scientific Co-Director of the Quantum Metrology Institute (QMI), which covers all of NPL's leading-edge quantum science and metrology research and provides the expertise and facilities needed for academia and industry to test, validate, and ultimately commercialise new quantum research and technologies.
Since 2017, JT has been a member of the NPL Executive team, first as the Research Director, and now as the Chief Scientist. In this role he is responsible for the external scientific engagements with academia and other government organisations and recently also our international activities. He responsible for the Science & Technology Advisory Council (STAC) and Post Graduate Institute (PGI) which NPL jointly runs with the Universities of Strathclyde and Surrey. Internally, he is responsible for the quality and benchmarking of the research outputs of the laboratory and its knowledge management. JT is also the UK delegate for EURAMET the European Association of National Metrology Institutes. JT is the executive sponsor for NPL’s Juno committee, which aims to address gender equality in physics and to encourage better practice for all staff and sponsor of the disability working group. JT is passionate about diversity and inclusion at the laboratory and in STEM more generally.
JT is a Chartered Physicist and Chartered Engineer and a Fellow of NPL, the Institute of Physics (IOP) and the Institute of Engineering and Technology (IET). He is also the NPL Head of Science and Engineering Profession for the Government Science and Engineering Profession (GSE) and a visiting professor at the University of Lancaster. He is the UK representative on EURAMET (European Metrology Organisation) and a member of its Board of Directors. In 2021 JT was elected a Fellow of the Royal Academy of Engineering.
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Пікірлер: 98

  • @esnevip
    @esnevip3 ай бұрын

    "A lunar lander crash lands on Mars" Overshot is an understatement.

  • @Sejl

    @Sejl

    3 ай бұрын

    Imagine how precise this error must be 😂

  • @esnevip

    @esnevip

    3 ай бұрын

    @@Sejl perhaps the mathematician heard 'Duna' instead of 'Lunar'

  • @John-D.

    @John-D.

    2 ай бұрын

    YOU do it! 💥👌

  • @andycordy5190
    @andycordy51903 ай бұрын

    I hope there is always time to recognise the genius of those who imagine the application for the principle as well as those who establish the principle itself. 2019 passed me by. It was obviously a very important year for quantum mechanics. Thank you.

  • @britboy70
    @britboy703 ай бұрын

    Always love a new RI video

  • @Sr_via1
    @Sr_via1Күн бұрын

    He is bringing back our old school physics memory

  • @DouwedeJong
    @DouwedeJong3 ай бұрын

    This is a fantastic presentation. Thanks for sharing the video.

  • @jaymethodus3421
    @jaymethodus34213 ай бұрын

    The next breakthrough in information processing relies on decoherence-sensitive weight-biasing at the node-layer level in a network. I'm excited for this lecture. Edit: in the context and towards the capability of maintaining entangled super-oscillation of two identical inverse 'signal inputs'.

  • @TRquiet
    @TRquiet2 ай бұрын

    I have to appreciate the scientific rigor in the construction of the presentation itself. He began by explaining why measurement is good, so we’re all in agreement.

  • @tokajileo5928
    @tokajileo59283 ай бұрын

    this was a very interesting lecture. who knows what these researches give us in time. Keep at the good work sir !

  • @Scuba72Chris
    @Scuba72Chris3 ай бұрын

    "When a lunar lander crashes on Mars"... Yeah that would be a serious error in navigation! 😄

  • @joeking4206
    @joeking42063 ай бұрын

    Great video. I loved the bit about the Newton apple tree grown from a cutting. A very nice touch.

  • @DrDeuteron
    @DrDeuteron3 ай бұрын

    3:30. A lunar lander crashing on mars is indeed a huge measurement error.

  • @whirledpeas3477
    @whirledpeas34773 ай бұрын

    I wish there was a venue like R.I. near my residence.

  • @haneen3731
    @haneen37313 ай бұрын

    Cool, nice talk!

  • @richardchapman1592
    @richardchapman15922 ай бұрын

    Glad you like Feynman analysis of quanta propagation. It leads us to speculate there is a granular nature of spacetime at plangth lengths where influences make the granules behave pseudo randomly as quanta are transmitted and diffracted through them. The maths is likely similar to Feynman.

  • @donaldhoot7741
    @donaldhoot77413 ай бұрын

    "The system is fixed forever"? How bold! Doesn't that fly in the face of Science? Cool Viddy!

  • @devilsolution9781

    @devilsolution9781

    3 ай бұрын

    Nah its arbitrary, as long as everyone agrees. Its like maths, we say 1+ 2=3 but 1+1 could =3 if we picked those symbols to mean that. Its arbitrary agreement

  • @donaldhoot7741

    @donaldhoot7741

    3 ай бұрын

    @@devilsolution9781 Sounds very 1984ish. You people need some logic.

  • @devilsolution9781

    @devilsolution9781

    3 ай бұрын

    @@donaldhoot7741 oh you must be american, using imperial. Or something.

  • @TheMemesofDestruction
    @TheMemesofDestruction3 ай бұрын

    28:55 - Thank you! ^.^

  • @Anders01
    @Anders013 ай бұрын

    NIST has a report about using quantum detectors for broadband radio communication at very low frequencies. That would be amazing if it could be used for 6G and higher instead of the extremely high traditional radio frequencies required. It will be interesting to hear this lecture.

  • @PirateRo333
    @PirateRo3333 ай бұрын

    I am curious about detection at extreme distance, say astronomical distance. Could we use any of these to image or map asteroids or say, Pluto?

  • @kashscott1422
    @kashscott14223 ай бұрын

    Would it be possible to observe the superposition of a photon in the double-slit experiment using quantum imaging techniques?

  • @vanikaghajanyan7760
    @vanikaghajanyan77603 ай бұрын

    31:30 “...All elementary particles arise from the dissipation of the vibration energy of a single essence - the string - which obeys the simple laws of a single theory that unites all particles and all forces in nature.”(Smolin); - if the parameter w (=1/т) describing the vibrations (vibrations) of the string, is interpreted as inertial induction: B(i)=[sec^-1]. [Apparently, the following expression takes place: μ(0)ε(0)Gi=1, which means that Gi=с^2 where i is inertial constant, i=1,346*10^28[g/cm]; or k=1/i=7,429*10^-29[cm/g]: "(Giving the interval ds the size of time, we will denote it by dт: in this case, the constant k will have the dimension length divided by mass and in CGS units will be equal to 1,87*10^-27)", Friedmann, "On the curvature of space". The ds, which is assumed to have the dimension of time, we denote by dt; then the constant k has the dimension Length Mass and in CGS-units is equal to 1, 87.10^ ± 27. See Laue, Die Relativitatstheorie, Bd. II, S. 185. Braunschweig 1921: k(Friedmann)/k=8π, where k=r(pl)/m(pl). The constant c^2 / 2w(pl) in the final formula* in "GR was QG" is a quantum expression of Kepler's second law: the quantum of the inertial flow Ф(i) = (½)S(pl)w(pl) = h/4πm(pl) (magnetic flux is quantized: = h/2e, Josephson’s const; and the mechanical and magnetic moments are proportional).] “The geometry of space in general relativity theory turned out to be another field, therefore the geometry of space in GR is almost the same as the gravitational field.” (Smolin); "This new type of universe in its other properties resembles Einstein's cylindrical world." (A. Friedmann, "On the curvature of space", 1922). Developing Einstein's hypothesis of a cylindrical world, Einstein's theory of gravitation "migrates" into phase space: due to this, it is quantized. ------------------- *) - Final formula:ф(G)=-[w/w(pl)]c^2/2, where ф(G) - is Newtonian gravitational potential, w - the frequency of the quanta of the gravitational field (as vibration field); according to GR / QG, gravitational field, or more precisely the grav-inertial field is characterized by a spontaneous flow: J(Gi) = (v'/π )(1/4π) g^2/G, where v'/π- phase velocity of field evolution is determined from the relativistic expression of Kepler's second law: сr(G)= v'r = const. Can be tested experimentally in the laboratory at the present. {The experimenter needs only two parameters; the mass (gram) of the body under study m(0) and the distance from its center (centimeter) r: so the energy of the quanta of the field ε(eV) ~1.83(m/r); the radiation flux J*[erg/cm^2•sec]~7.57•10^-27(m^3/r^5). For example: A lead ball suspended on a strong chain from the ceiling of the laboratory can serve as a test body; at radius r=27,6 cm, ball mass is m=1т. The energy of quanta/photons of the field (photons are characterized by different parity and helicity, and it is not quite accurate to say that a photon has an integer spin equal to one) at a distance r from the center of the test body to the detector (practically on the surface of the ball) =66,3 keV. The flow: J*=4,5•10^-9 quanta/сm^2sec; this is a measurable flux for modern world-class gamma detectors. (On the Earth's surface, the frequency of the quanta of the Earth's gravitational field: w=2.57*10^34 Hz (~2.7 J); the flow: J(G)=0.3 MW/cm^2).}

  • @balasubr2252
    @balasubr22522 ай бұрын

    Is thought a particle or a wave? Can quantum mechanics be applied for understanding thoughts and its entanglement with emotions, feelings and other phenomena? If yes, could these fields be related to sociology, psychology and societal spacetime of words of languages? Is this approach societal mechanics like celestial mechanics and soil mechanics?

  • @AdelSalti
    @AdelSalti3 ай бұрын

    3:34 If built according to accurate measurement, a ‘Lunar Lander’ should definitely crash on Mars; shouldn’t it? 😊

  • @AdrianBoyko

    @AdrianBoyko

    3 ай бұрын

    If a lunar lander crashes on Mars, there were some SERIOUS measurement problems.

  • @Life_42
    @Life_423 ай бұрын

    48:45 Are those images examples of their effects on gravity to the decimal place they're pointing to?

  • @simonsong1743

    @simonsong1743

    3 ай бұрын

    Anyway I hope it'll be sensitive enough to detect Russia submarine.

  • @richardchapman1592
    @richardchapman15922 ай бұрын

    No hidden variables? What are the energy considerations of spin flips of quanta in deep space? They could be as mysterious as pair formation in deep space.

  • @richardchapman1592
    @richardchapman15922 ай бұрын

    Try spinors with uncertainty of precise spin or polarisation states. We make the uncertainties of measurement fit the maths

  • @koonigallery2107
    @koonigallery21072 ай бұрын

    If quantum gravity has been detected then does that mean that in a state of superposition the gravitational field in that space is in a state of constant fluctuation to accommodate the probability of a particle's position? If that is true then the gravitational force in the spacial field must be greater than the mass of the particle? Then to measure the gravitational effects in a spacial field is to know a particles position and velocity no?

  • @koonigallery2107

    @koonigallery2107

    2 ай бұрын

    It would violate Newtonian physics ?

  • @schmetterling4477

    @schmetterling4477

    Ай бұрын

    It would only mean that spacetime is slightly "uneven" at the level of resolution of atomic interferometers. I doubt that very much, even though I wish these experimentalists luck. It would be a very interesting result if it turns out to be correct.

  • @RFC3514
    @RFC35142 ай бұрын

    38:10 - One day, quantum video editing will allow audio to actually stay in sync.

  • @zeroonetime
    @zeroonetime2 ай бұрын

    Is at all possible to measure the immeasurable ?? The uncertainty Principle comes to mind!!!

  • @schmetterling4477

    @schmetterling4477

    Ай бұрын

    The uncertainty principle is a completely trivial lemma about certain types of linear operators. You can see it at work on water waves. It has nothing to do with quantum mechanics.

  • @Life_42
    @Life_423 ай бұрын

    37:57 42!

  • @q.e.d.9112

    @q.e.d.9112

    3 ай бұрын

    Ah, but what was the question?

  • @alexandrugheorghe5610
    @alexandrugheorghe56102 ай бұрын

    20:02 -273° Celsius. Kelvin would be 0 for absolute zero

  • @Katja.T.
    @Katja.T.3 ай бұрын

    ♥️

  • @subhuman3408
    @subhuman34082 ай бұрын

    58:20 8*-

  • @coffeetop1131
    @coffeetop11312 ай бұрын

    The review of physics here is error-ridden. Sensors discussion is good.

  • @empmachine
    @empmachine3 ай бұрын

    The presenter is entangled with the word "Uh"

  • @tncorgi92

    @tncorgi92

    2 ай бұрын

    I'm assuming that English isn't his native language so he's translating his thoughts on the fly and that results in little pauses.

  • @racghineering
    @racghineering3 ай бұрын

    u need to pass and knowing fundamental of magnetometry and gravimetri ,how it works and why , before Q.I. / I.Q.

  • @scottbaileyActivstudios
    @scottbaileyActivstudios3 ай бұрын

    This really does mean you're living in a dream world Neo.

  • @Woolm810
    @Woolm8103 ай бұрын

    Can I get a fact check on the Lord Kelvin quote? I believe that was a paraphrase of another physicist, Albert Michelson. I could be wrong, tho and no hating on the speaker.

  • @sakismpalatsias4106
    @sakismpalatsias41063 ай бұрын

    Quantum imaging

  • @sakismpalatsias4106

    @sakismpalatsias4106

    3 ай бұрын

    Because of applications.

  • @sakismpalatsias4106

    @sakismpalatsias4106

    3 ай бұрын

    If we could ever find hawking radiation. We could hack physics and find out what's happening in a black hole, inter alia.

  • @sakismpalatsias4106

    @sakismpalatsias4106

    3 ай бұрын

    But all three are exciting to follow lol

  • @chrisarmstrong8198
    @chrisarmstrong81983 ай бұрын

    52:20 Is the gravity at the centre of the earth really higher than at the surface? Since the centre of the earth is surrounded by a roughly equal amount of mass in all directions, wouldn't the gravity be (almost) zero there?

  • @TheKos2Kos

    @TheKos2Kos

    3 ай бұрын

    What? Just google the equation. Gravity gets stronger as objects get closer. Also look up what center of mass means, i think that would help you

  • @TheKos2Kos

    @TheKos2Kos

    3 ай бұрын

    Where do you think the vector of gravity heads? In my understanding the vector also points to center of mass of the larger object

  • @AdrianBoyko

    @AdrianBoyko

    3 ай бұрын

    Look up “Shell Theorem”. The “center of mass” simplification only applies if you’re outside the mass.

  • @douggale5962

    @douggale5962

    3 ай бұрын

    Inverse square law only applies to point sources. The amplitude doesn't approach infinity when you are nearby, because the source won't be point-like. Inverse square law says that it approaches infinite gravity at the center, which is total nonsense. At the center, there is no gravity because the gravity of all of the mass around you sums to zero, being all equal and opposite. When you are too near for the source to appear as a point, it becomes linear.

  • @ThunderBassistJay
    @ThunderBassistJay3 ай бұрын

    3:28 If a lunar lander crashes on Mars, it's off by at least 54,600,000 km. 😁

  • @markosluga5797
    @markosluga57973 ай бұрын

    3:27 yeah, that's what I would call a poor measurement - when a lunar module crashes on Mars 😂

  • @mattlee3044
    @mattlee30443 ай бұрын

    3:29 …”or when a Lunar Lander crashes on Mars …” that will be a measurement error of the navigation system!

  • @Abhay_Kumar_Y
    @Abhay_Kumar_Y3 ай бұрын

    3:29 how could a lunar lander crash on Mars?

  • @AdrianBoyko

    @AdrianBoyko

    3 ай бұрын

    Measurement errors

  • @NobbsAndVagene
    @NobbsAndVagene3 ай бұрын

    I see NPL, I think 'nipple' and I laugh. I'll see myself out.

  • @AdityaMehendale

    @AdityaMehendale

    3 ай бұрын

    With all these "fake-name-four-digit" accounts, yours might be the most genuine reaction here. As sad as that is.

  • @richardofoz2167
    @richardofoz21673 ай бұрын

    I realise it must be hard to avoid, but you really need to provide in a popularising session, but you really owe us a better reason for the photo of "Newton's apple tree", for which no evidence actually exists.

  • @anthonyshiels9273

    @anthonyshiels9273

    3 ай бұрын

    The ACTUAL apple tree in question is to be seen in Trinity College, Cambridge in England.

  • @richardofoz2167

    @richardofoz2167

    3 ай бұрын

    @@anthonyshiels9273 I remain sceptical

  • @robertocapocchi8379
    @robertocapocchi83793 ай бұрын

    A “massive” change indeed.😂

  • @MrYevie
    @MrYevie3 ай бұрын

    he was sloppy when he said there are no hidden variables. There are no 'local' hidden variables. Global hidden variables could exist

  • @justindastar
    @justindastar3 ай бұрын

    uhhhhhh

  • @goldnutter412
    @goldnutter4122 ай бұрын

    Quantum phenomena really are not hard to understand, we just make it hard. Things cannot be in two places at once, the founding 7 knew this. Computers didn't exist. God plays dice because "god" is just an idea, a word for something non physical. The more correct word would be a distributed/parallelized information system, which has individuality as a key concept - we play this physical protocol, render our universe as we make choices, and learn - we CHANGE our SELF Thus the vector of evolution continues, we become more specialized, and more interdependent.. as the architect said.. the problem is choice. Choose wisely..

  • @RottnRobbie
    @RottnRobbie2 ай бұрын

    I'm (uh) sorry. I tried. I (uh) really did (uh)(uh) try to watch this for the (uh) potentially (uh) interesting content. But in the end, I (uh) just couldn't (uh) get past the (uh) presenter's (uh) verbal tic of (uh) saying "uh" every few (uh) seconds. The Professor (uh) may be a (uh) fine (uh) scientist, but he (uh) really needs some (uh) coaching on (uh) public speaking.

  • @timothy8426
    @timothy84263 ай бұрын

    Gravity is proven? What force pulls?

  • @lebojay

    @lebojay

    3 ай бұрын

    Gravity. It is one of the four fundamental forces, along with the strong force, the weak force, and electromagnetism. If you want to disagree, don’t bother putting it here. I’ll just read your peer-reviewed journal article when you publish it. If you prove this stuff wrong, there is a Nobel prize in it for you for sure.

  • @Projacked1

    @Projacked1

    3 ай бұрын

    @@zacukeNo gap, quantum mechanics switches to classical mechanics, both in relation to gravity, That is, if I understand it properly.

  • @DJR000

    @DJR000

    3 ай бұрын

    Magnetic fields

  • @thorstenswims6088

    @thorstenswims6088

    3 ай бұрын

    Gravity is often described as a force, even in the scientific domain. But you r right. There is nothing that „pulls“. I would say its semantic freedom.

  • @Projacked1

    @Projacked1

    3 ай бұрын

    @@thorstenswims6088 Semantics indeed, how would you describe it? Since we all fall to the ground?

  • @subhuman3408
    @subhuman34082 ай бұрын

    Π¹

  • @jamesh318
    @jamesh3183 ай бұрын

    😂 If you think you understand quantum mechanics, you don’t understand quantum mechanics - Feynman (and/or others)

  • @GNARGNARHEAD
    @GNARGNARHEAD3 ай бұрын

    really members only content.. *grumbles in poor person*

  • @TomiTapio
    @TomiTapio2 ай бұрын

    NOT for advanced listeners who would like to hear about quantum sensors!

  • @DJR000
    @DJR0003 ай бұрын

    Why does it feel like an advert?

  • @AdityaMehendale
    @AdityaMehendale3 ай бұрын

    Compared to other RI-lectures, this one seems superficial, and of a attitude "Yay, Science!" instead of lucid explanations as -let's say- Feynman might have provided.

  • @Robinson8491

    @Robinson8491

    3 ай бұрын

    Feynman got one hour to tell stories about a single electron, this guy has to summarise the entire western canon of physics first to get to his point. So not real fair comparison I guess, just skip through the first half hour

  • @diegoalejandrosanchezherre4788

    @diegoalejandrosanchezherre4788

    3 ай бұрын

    I think This lecture aims ti motivate the posible beneficts of the development of theese quamtum tecnologies

  • @awestwood3955

    @awestwood3955

    3 ай бұрын

    As a non-physist I enjoyed it. It was well pitched for non experts and introduced me to a huge range of ideas which I can now go off and do further research into.

  • @andrewg7035

    @andrewg7035

    3 ай бұрын

    Applied science vs theoretical physics

  • @awestwood3955

    @awestwood3955

    2 ай бұрын

    @@hattielankford4775 😂 woops 😂

  • @davejones542
    @davejones5423 ай бұрын

    This is absolutely dreadful. Old theories out of date. Also double slit with bullets ? Seriously ? they would just go in a straight line or destroy the slit!

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