main concepts scientists sections
Scientist

William Wootters

1951- · quantum information, quantum mechanics
American physicist, specialist in quantum information and entanglement. Together with Wojciech Zurek, proved the no-cloning theorem, a fundamental limitation of quantum mechanics. Developed a measure of entanglement — concurrence.

Biography

Born in the USA. Studied at Stanford, received his PhD at the University of California, Berkeley. Worked at Williams College, where he taught until retirement. Collaborated closely with Charles Bennett and other quantum information pioneers.

Key discoveries

💡 In his free time, he enjoys the history of science and collects rare scientific books.
"He asserted that creating a perfect copy of an unknown quantum state is impossible."
Concepts
superpositionquantum computer
Laws
no-cloning theoremtheorem on the monogamy of entanglement
Scientists
Alain AspectDavid DeutschLouis de BroglieRichard FeynmanDavid WinelandWerner HeisenbergArtur EkertGilles Brassard

Related articles

Quantum Physics2011-01-033 minarXiv:1101.0503
A Lattice with No Inside or Outside: Quantum Mechanics as a Description of Entanglement
A woven basket holds its shape not because it has a rigid frame, but because each strand is interlaced with its neighbors. Pull one out, and the pattern unravels, leaving a heap of twigs. Quantum mechanics, according to a new paper, works the same way: its elementary objects do not exist independently, but only in interweaving with each other.
Dong-Sheng Wang
theorem on the monogamy of entanglementLindblad equationWilliam Woottersquantum entanglementquantum computerquantum gravityQuantum Fieldquantum tunneling
SimplePopularAdvanced
Strongly Correlated2011-12-252 minarXiv:1112.5783express
The Magnetic Knot That Refuses to Come Undone
A crowd in a square. At first, everyone spins to their own rhythm, but suddenly the music changes, and they all start moving in sync, as one. That's roughly how electrons behave in some metals: they either cling to magnetic impurities or break away and form a collective order.
S. Hemmatiyan·M. Rahimi Movassagh·N. Ghassemi·M. Kargarian·A. T. Rezakhani·A. Langari
quantum Hall effecttheorem on the monogamy of entanglementKlaus von KlitzingknotsQuantum superpositionCooper pairStandard Model
SimplePopularAdvanced
Mesoscale2018-08-272 minarXiv:1808.09043express
Quantum Tangles: How to Spot an Invisible Connection
A stone falls into water, and ripples spread outward. In the quantum world, a magnetic impurity (that pebble) in a metal perturbs the surrounding electrons, and they form a special cloud around it. This is called the Kondo cloud. Like ripples on water in the dark, it long remained elusive.
Gwangsu Yoo·Seung-Sup B. Lee·H. -S. Sim
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementquantum opticsquantum measurementquantum gravityquantum tunneling
SimplePopularAdvanced
Quantum Physics2023-05-062 minarXiv:2305.03967express
Quantum Energy Teleportation in a Chain
Quantum entanglement is like an invisible spring between particles — squeeze one, and the other twitches, no matter where it is. In the new work, physicists built a model of four spins (tiny magnetic arrows) in a chain, where the end spins are held by a local magnetic field.
Kanji Itoh·Yusuke Masaki·Hiroaki Matsueda
theorem on the monogamy of entanglementWilliam WoottersAlain AspectErwin Schrödingerquantum teleportationquantum entanglementvon Neumann entropyentropysuperposition
SimplePopularAdvanced
Quantum Physics2023-10-242 minarXiv:2310.15936
Echo of the Invisible Stone
In a chain of eight spins, a defect lurks — a tiny magnetic moment. The Kondo effect, known since the 1930s, makes electrons around it align into a collective screen. The material's resistance abnormally increases. But detecting such an impurity hidden deep in the structure is like finding a stone at the bottom of a dark pond.
Kazuki Ikeda·Rajeev Singh·Robert-Jan Slager
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementquantum teleportationvon Neumann entropyAharonov–Bohm effectentropy
SimplePopularAdvanced
HEP Phenomenology2025-05-014 minarXiv:2505.00873
Maximum Quantum Entanglement: Hidden Symmetry and the Mirror Universe
In the silent heart of creation, where particles converge and part, an act of pure harmony is born. Two Higgs bosons meet and for a fleeting moment form a single whole — and if one demands that their quantum entanglement always reaches its limit, like a tuning fork setting a perfect pitch, then the equations suddenly light up with a new symmetry.
Marcela Carena·Guglielmo Coloretti·Wanqiang Liu·Mira Littmann·Ian Low·Carlos E. M. Wagner
theorem on the monogamy of entanglementCPT theoremWilliam WoottersChien-Shiung WuEugene Wignerquantum entanglementQuantum superpositionuncertainty principlespontaneous symmetry breakingquantum decoherence
SimplePopularAdvanced
Quantum Physics2025-05-013 minarXiv:2505.00919
Quantum Symphony from Noise: How Spontaneous Emission Gives Birth to Entanglement
Spontaneous emission, the very process that lights up lamps and stars, has long been considered a pesky noise in quantum physics. This cacophony of random photons ruthlessly destroys fragile quantum entanglement, like radio static drowning out a distant melody.
Xihua Yang·Mingfei Cheng·Xiaodong Zeng·Zhenghong Li·Min Xiao
theorem on the monogamy of entanglementsuperposition principleWilliam WoottersDavid DeutschErwin Schrödingerquantum entanglementquantum decoherenceinstantonsqueezed stateinterference
SimplePopularAdvanced
Quantum Physics2025-05-024 minarXiv:2505.01379
Death and Rebirth of Quantum Echo: A Hierarchy of Temporal Correlations in a Qubit
Strike a gong and the sound fades in layers: the low hum lingers longer, the high overtones vanish first, leaving silence behind. So too a qubit, living its quantum life, leaves not one but three echoes of its own past.
Hao-Cheng Weng·Chen-Yeh Wei·Huan-Yu Ku·Shin-Liang Chen·Yueh-Nan Chen·Chih-Sung Chuu
theorem on the monogamy of entanglementWilliam WoottersDavid DeutschAlain Aspectqubitquantum computerQuantum superpositionquantum error correctionquantum information
SimplePopularAdvanced
Quantum Physics2025-05-023 minarXiv:2505.01532
Quantum Boomerang: Fugue in a Detuned Orchestra
Quantum walking is not a series of random steps, but a musical score where the piano of space sounds under the conductor's baton of the internal state. The coin sets the tone. Until now, it was believed that detuned keys (phase disorder) mute any melody, leading to Anderson localization — a ringing silence.
A. R. C. Buarque·W. S. Dias·Ernesto P. Raposo
theorem on the monogamy of entanglementWilliam WoottersAlan GuthAlbert EinsteinWave Function Collapsequantum entanglementquantum computerQuantum superpositionquantum error correction
SimplePopularAdvanced
Quantum Physics2025-05-033 minarXiv:2505.01863
Quantum Wallet: Energy Teleportation Between Five Qubits
Quantum entanglement long remained a curiosity — 'spooky action at a distance,' as Erwin Schrödinger put it, which shatters our conventional picture of the world. But in 2008, physicists realized: entanglement can be used not only to transfer bits, but also to teleport energy.
Alif Elham Khan·Humayra Anjum·Mahdy Rahman Chowdhury
theorem on the monogamy of entanglementtunnel effectWilliam WoottersGeorge GamowLeo Esakiquantum teleportationquantum computerquantum informationQuantum superpositionqubit
SimplePopularAdvanced
Quantum Physics2025-05-043 minarXiv:2505.02057
Quantum Internet: How Entanglement Became a Data Packet
Quantum computing promises a revolution, but its real power will only unfold in a network. The best “brains” — superconducting qubits — communicate at microwave frequencies. The ideal “couriers” — optical photons — fly at hundreds of terahertz. A direct hookup is impossible.
Marcello Caleffi·Laura d'Avossa·Xu Han·Angela Sara Cacciapuoti
theorem on the monogamy of entanglementno-cloning theoremWilliam WoottersDaniel GottesmanDavid DiVincenzoquantum informationquantum teleportationquantum computerquantum entanglementquantum error correction
SimplePopularAdvanced
Quantum Physics2025-06-032 minarXiv:2506.02920
Quantum Data Centers: How Entanglement Weaves the Network
Inside a cryostat cooled to tens of millikelvins live superconducting qubits. There aren't many of them: tens, at most hundreds. Crosstalk and thermal noise prevent packing more. But cracking RSA-2048 requires anywhere from ten thousand to ten million physical qubits.
Angela Sara Cacciapuoti·Claudio Pellitteri·Jessica Illiano·Laura d'Avossa·Francesco Mazza·Siyi Chen·Marcello Caleffi
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum computerquantum error correctionquantum entanglementquantum informationquantum key distribution
SimplePopularAdvanced
Quantum Physics2025-06-032 minarXiv:2506.03282
Particles Dance to the Music of Quantum Spacetime
Two particles begin their dance in complete independence. Neither knows of the other's existence. But under the invisible music of deformed spacetime, their motions gradually synchronize: entanglement is born in the system—that very quantum connection Einstein called 'spooky action at a distance.' In the ordinary world, energies add up simply: take the energy of…
Iarley P. Lobo·Gislaine Varão·Giulia Gubitosi·Moises Rojas·Valdir B. Bezerra
theorem on the monogamy of entanglementWheeler-DeWitt equationWilliam WoottersBryce DeWittCarlo Rovelliquantum entanglementquantum decoherenceDecoherencequantum gravityspacetime
SimplePopularAdvanced
Quantum Physics2025-08-054 minarXiv:2508.03052
A Bridge from a Single Particle to a Pair: How Existing Experiments Can Prove Quantum Gravity
In 2022, physicists observed gravity shifting the phase of a single atom's wave, the gravitational analog of the Aharonov–Bohm effect. This experiment became part of a long-standing debate: whether gravity must be quantized or remains a classical background in the quantum world.
Martin Plávala
theorem on the monogamy of entanglementWilliam WoottersAlain AspectDavid DeutschDecoherencegravity
SimplePopularAdvanced
Quantum Physics2025-08-083 minarXiv:2508.06612
The Demon with an Incomplete Notebook
In 1867, James Clerk Maxwell imagined a demon that sorts gas molecules and thereby violates the second law of thermodynamics. The demon needs to know the speeds of the particles. In the quantum world, a similar task arises: keep entanglement from growing like an avalanche, but you cannot observe the entire system.
Giovanni Cemin·Markus Schmitt·Marin Bukov
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementquantum computerquantum error correctionquantum informationvon Neumann entropy
SimplePopularAdvanced
Quantum Physics2025-08-203 minarXiv:2508.18131
A Broken Conservation Law Turns a Thermal Bath into an Entanglement Pump
Heat flow usually evens everything out: hot things cool down, cold things warm up, and in the end you are left with a uniform warm swamp. The same holds in the quantum world: the environment, whether a crystal lattice or a gas of photons, tends to destroy the fragile entanglement between particles.
Vince Hou·Eric Kleinherbers·Shane P. Kelly·Yaroslav Tserkovnyak
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementspontaneous symmetry breaking
SimplePopularAdvanced
Neurons and Cognition2025-09-173 minarXiv:2509.16253
Mental Entanglement: The Quantum Language of Neural Networks
In 1935, Erwin Schrödinger, peering into the equations of quantum mechanics, saw something strange: two particles could be linked so tightly that the state of one instantly determines the state of the other, even if they are separated by kilometers.
Andrei Khrennikov·Makiko Yamada
theorem on the monogamy of entanglementWilliam WoottersDavid DeutschJohn Archibald Wheelerquantum-like modelsNeural Network Oscillationsquantum entanglementquantum informationquantum computer
SimplePopularAdvanced
Quantum Physics2025-10-061 minarXiv:2510.05405express
Quantum Triplet: Three-Photon Entanglement Confirmed
Physicists have for the first time created a trio of photons entangled as a single whole, not just pairwise. To achieve this, a special chip was cooled to a temperature hundreds of times lower than that of deep space — any noise threatened to destroy the fragile link.
Benjamin Jarvis-Frain·Andy Schang·Fernando Quijandría·Ibrahim Nsanzineza·Dmytro Dubyna·C. W. Sandbo Chang·Franco Nori·C. M. Wilson
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementsqueezed stateQuantum superpositionquantum teleportationquantum decoherence
SimplePopularAdvanced
Quantum Physics2025-10-231 minarXiv:2510.20392express
Quantum Communication Speeds Up Nearly Five Times
Regular quantum communication is like a postal service that sends letters strictly one at a time. If the route is long, you have to wait an indecently long time for a reply. Physicists sped up the process by dispatching ten 'postal trucks' — light pulses — into a single optical fiber, but in different time windows.
Z. B. Cui·Z. Q. Wang·P. Y. Liu·Y. Wang·P. C. Lai·J. X. Shi·Y. D. Sun·Z. C. Tian·H. S. Sun·Y. B. Liang·B. X. Qi·Y. Y. Huang·Z. C. Zhou·Y. K. Wu·Y. Xu·Y. F. Pu·L. M. Duan
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementquantum teleportationquantum informationquantum opticsspeed of light
SimplePopularAdvanced
Quantum Physics2025-11-241 minarXiv:2511.19242express
Can gravity entangle particles?
Two particles can become linked so that a nudge on one instantly reverberates in the other, even if they are separated by galaxies. Einstein called it "spooky action at a distance." Physicists wondered: can gravity itself, a simple mutual attraction, create such a connection?
Mike D. Schneider·Nick Huggett·Niels Linnemann
theorem on the monogamy of entanglementEinstein field equationsWilliam WoottersAlbert EinsteinBernhard Riemannquantum gravityquantum entanglementgravityspacetime curvaturegravitational singularity
SimplePopularAdvanced
Information Theory2025-11-281 minarXiv:2511.23406express
Quantum Entanglement Speeds Up Secret Computations
When a computer can't handle multiplying two giant tables of numbers, they're sliced into tiny pieces and sent out to dozens of helper servers. For secret data, mathematical tricks are used so the helpers never see the original numbers. Usually, the higher the secrecy, the more servers you need. The authors proposed using a special quantum property — entanglement between the servers.
Mohamed Nomeir·Alptug Aytekin·Lei Hu·Sennur Ulukus
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementquantum informationquantum computerquantum error correctionquantum algorithm
SimplePopularAdvanced
Quantum Physics2025-12-032 minarXiv:2512.03681express
Quantum Walks and Oscillator Networks: A Mathematical Duality
Two seemingly incompatible mathematical languages describe a single quantum reality. The first is the language of quantum walks: here, a particle (such as an electron or even a quasiparticle in a condensed medium) takes a stroll on a graph, simultaneously exploring all possible paths — much like a pedestrian in an unfamiliar city instantly finding…
Lilith Zschetzsche·Refik Mansuroglu·András Molnár·Norbert Schuch
theorem on the monogamy of entanglementWilliam WoottersDavid DeutschJohn Archibald Wheelerquantum-like modelsquantum entanglementquantum thermodynamicsquantum tunnelingquantum gravity
SimplePopularAdvanced
Quantum Physics2025-12-201 minarXiv:2512.18400express
The Quantum Coin: Bohr & von Neumann's Solution
A quantum particle, an inhabitant of the elementary particle world, resembles a coin spinning in the air: neither heads nor tails, but a blend of possibilities. Yet when it lands on the table, the outcome becomes definite. What serves as the table in a measurement?
Jeffrey Bub
Born ruletheorem on the monogamy of entanglementMax BornWilliam WoottersJohn Archibald Wheelerquantum measurementvon Neumann entropyquantum computersuperpositionQuantum superposition
SimplePopularAdvanced
General Relativity2026-01-061 minarXiv:2601.02976express
Perfect Entanglement Defies Infinite Acceleration
Quantum entanglement is a special connection between particles: they affect each other instantly, even across light-years. For a long time, it was believed that strong acceleration destroys this bond.
Si-Han Li·Hui-Chen Yang·Rui-Yang Xu·Shu-Min Wu
theorem on the monogamy of entanglementUnruh effectWilliam WoottersWilliam UnruhDaniel Gottesmanquantum entanglementinstantonquantum tunnelingvirtual particlespacetime curvature
SimplePopularAdvanced
Quantum Physics2026-01-082 minarXiv:2601.04848express
Quantum Entanglement in Diamonds: How Two Atoms 'Talk' Across a Distance
Imagine two synthetic diamonds, each acting as a high-precision tuning fork. Inside the crystal lattice of each diamond sits a carbon-13 atom: this is a quantum bit, or qubit, the minimal unit of quantum information.
Mariagrazia Iuliano·Nicolas Demetriou·H. Benjamin van Ommen·Constantijn Karels·Tim H. Taminiau·Ronald Hanson
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementquantum computerquantum informationquantum teleportationqubit
SimplePopularAdvanced
Nuclear Theory2026-01-101 minarXiv:2601.06544express
Quantum Entanglement in the Atomic Nucleus
The atomic nucleus is not just a bag of protons and neutrons. It is a quantum system where particles are bound by invisible threads of entanglement. When two protons or neutrons interact, their states become intertwined so that describing one without the other is impossible.
Rohit M. Shinde·Praveen C. Srivastava
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementinstantonhadronquarkuncertainty principle
SimplePopularAdvanced
Atomic Physics2026-01-232 minarXiv:2601.17144express
Quantum Entanglement: Born in Collisions
In the quantum world, a collision between particles doesn't destroy their individuality but ties them into an inseparable knot: internal states and motions become intertwined like threads in an intricate tapestry.
Adrien Devolder·Paul Brumer·Timur Tscherbul
theorem on the monogamy of entanglementsuperposition principleWilliam WoottersDavid DeutschErwin Schrödingerquantum entanglementvon Neumann entropyquantum measurementinstantonQuantum superposition
SimplePopularAdvanced
Quantum Physics2026-01-291 minarXiv:2601.21555express
How a Classical Pendulum Creates Quantum Entanglement
For a long time, physicists were certain: quantum entanglement requires direct quantum contact. A new study refutes this. Two microscopic magnetic particles, connected only by a classical spring, successfully become entangled.
Sebastian Ulbricht·Andrés Darío Bermúdez Manjarres·Marcel Reginatto
theorem on the monogamy of entanglementquadrupole radiation formulaWilliam WoottersAlbert EinsteinBarry Barishquantum entanglementquantum gravityvon Neumann entropyquantum thermodynamicsgravity
SimplePopularAdvanced
Quantum Physics2026-02-031 minarXiv:2602.03456express
Light and a Particle Tangled in a Dance
On a lab bench sits a laser trap — an invisible hand that holds a glass bead the size of a bacterium in midair. Next to it is a mirrored cavity where light bounces between two reflective walls. Scientists made the bead and the light exchange quantum entanglement: their states are now linked so that measuring one instantly reveals the other.
Q. Deplano·A. Pontin·F. Marino·F. Marin
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementquantum opticssqueezed statequasiparticlequantum decoherence
SimplePopularAdvanced
Quantum Physics2026-02-051 minarXiv:2602.05337express
Quantum Roulette: How to Measure More Precisely by Outsmarting Chaos
Quantum sensors are like an orchestra where musicians play in unison: their entangled states let them pick up signals that ordinary instruments can't. But as soon as you start accumulating the signal, the nonlinear interaction, like a conductor who suddenly starts beating time erratically, ruins the music.
Jihao Ma·Jiahao Huang·Chaohong Lee
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum measurementquantum sensingquantum entanglementsqueezed statequantum error correction
SimplePopularAdvanced
Quantum Physics2026-02-092 minarXiv:2602.08947express
Entangled Photons Find Their Target Through Fog
A flashlight in thick fog is useless: the beam scatters, and the reflected light drowns in noise. But if you tie two photons with an invisible thread, one can pass through the fog and come back, while the other stays safe. This connection is called quantum entanglement — when two particles behave as a single whole, even when far apart.
Sujai Matta·Soumya Asokan·Sanchari Chakraborti·Mayank Joshi·Rahul Dalal·C. M. Chandrashekar
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementquantum opticssqueezed statequantum tunnelingdark photon
SimplePopularAdvanced
Quantum Physics2026-02-102 minarXiv:2602.09900
Gravity as a converter of quantum resources
Two massive particles hang motionless in the void, each at a crossroads: to be on the left or on the right. As long as nobody looks, they occupy both positions at once, and this state is called quantum coherence. Gravity pulls them toward each other, and the pull depends on where exactly each one ended up.
Hazhir Dolatkhah·Shahriar Salimi·Soroush Haseli
theorem on the monogamy of entanglementEinstein field equationsWilliam WoottersAlbert EinsteinBernhard Riemannquantum entanglementQuantum superpositiongravityquantum gravityquantum computer
SimplePopularAdvanced
Quantum Physics2026-02-101 minarXiv:2602.10317express
Twin Photons for Quantum Networks
Two photons fly out of a tiny box, and behave like twins who always wear matching outfits. Turn one, and the other instantly turns the same way, even if they are kilometers apart. This is no magic trick but quantum entanglement: a connection between particles that defies distance. Researchers have built a compact source of such pairs.
Michael Grayson·Shawn Meyer·Daniel Sorensen·Abigail Gookin·Markus Allgaier·Nicholas V. Nardelli·Tara M. Fortier·Dileep V. Reddy·Martin J. Stevens·Michael D. Mazurek·Juliet T. Gopinath·L. Krister Shalm
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementquantum teleportationquantum informationquantum measurementquantum state
SimplePopularAdvanced
Quantum Physics2026-02-111 minarXiv:2602.10882express
The Birth of Quantum Light in a Semiconductor
A powerful laser strikes a semiconductor, and it responds with light at many frequencies, like a string sounding a chorus of overtones. Previously, this was used in spectroscopy to observe ultrafast processes. But now physicists have noticed: the overtones are not independent; they behave as if connected by invisible threads.
David Theidel·Mackrine Nahra·Ilya Karuseichyk·Houssna Griguer·Mateusz Weis·Viviane Cotte·Hamed Merdji
theorem on the monogamy of entanglementCompton effectWilliam WoottersArthur ComptonAlain Aspectquantum entanglementsqueezed statequantum opticsinstantonsynchrotron radiation
SimplePopularAdvanced
General Relativity2026-02-121 minarXiv:2602.11586express
Black Hole Did Not Destroy Quantum Entanglement
Fragile as ice in a furnace, quantum entanglement usually perishes from the slightest heat. Near a black hole, where space is twisted by Einstein's gravity and Hawking radiation Hawking's heats things up, any bond should be destroyed.
Si-Han Li·Hui-Chen Yang·Rui-Yang Xu·Shu-Min Wu
Hawking radiationtheorem on the monogamy of entanglementJacob BekensteinJohn Archibald WheelerStephen Hawkingquantum entanglementHawking radiationquasiparticlequantum teleportationgravitational singularity
SimplePopularAdvanced
Quantum Physics2026-02-152 minarXiv:2602.13990express
Quantum Threads: How Measurements Weave Connections
A quantum computer weaves a kind of thread from qubits, where each node is a particle and the connection between them is an entanglement. When a physicist measures a qubit, the thread changes: it breaks somewhere, gets sewn together somewhere else, and sometimes a twist appears on it.
Sougata Bhattacharyya·Sovik Roy
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum measurementquantum computerquantum entanglementquantum informationQuantum superposition
SimplePopularAdvanced
Quantum Physics2026-02-171 minarXiv:2602.15655express
Sunlight Creates Quantum Entanglement
Sunlight is a turbulent stream carrying inseparable pairs of droplets. That’s what quantum entanglement looks like: two particles are so connected that a fluctuation in one instantly resonates in the other. In the past, creating such pairs required a 'calm pool' — a perfectly tuned laser beam.
Cheng Li·Jasvinder Brar·Michael Küblböck·Jeremy Upham·Hanieh Fattahi·Robert W. Boyd
Planck–Einstein relationtheorem on the monogamy of entanglementAlbert EinsteinMax PlanckWilliam Woottersquantum entanglementquantum opticsSolar windphotonic crystalswave-particle duality
SimplePopularAdvanced
Quantum Physics2026-02-241 minarXiv:2602.20694express
Quantum Entanglement on a Short Leash
Quantum entanglement works like a leash: it ties particles together, but the length of this tether is strictly limited. In a chain of particles, heat plays the role of an impatient dog tugging at the leash — the hotter it gets, the shorter the distance over which the connection holds.
Samuel O. Scalet
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum entanglementvon Neumann entropyquantum thermodynamicsfluctuationquintessence
SimplePopularAdvanced
Quantum Physics2026-03-081 minarXiv:2603.07548express
Dancing Ions in a Crowded Trap
An ion quantum computer is like a chandelier with a dozen pendants: pull one, and they all start swinging. Each ion is a qubit, but when there are many, their collective vibrations crowd the stage. Any operation on one pair disturbs the neighbors, and the computation goes awry.
Tommaso Faorlin·Lorenz Panzl·Phoebe Grosser·Pablo Viñas·Alan Kahan·Walter Joseph Hörmann·Yannick Weiser·Giovanni Cerchiari·Thomas Feldker·Alexander Erhard·Georg Jacob·Juris Ulmanis·Rainer Blatt·Alejandro Bermudez·Thomas Monz
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum computersuperpositionquantum entanglementqubitQuantum superposition
SimplePopularAdvanced
Quantum Physics2026-03-111 minarXiv:2603.10289express
Quantum Entanglement Helps Play Pong
In ping-pong, two paddles connected by an invisible thread feel each other's movements, guessing the ball's trajectory. Researchers gave a computer a similar thread — quantum entanglement. Into an ordinary trial-and-error learning program, they embedded a quantum circuit of eight qubits — particles that can spin like a coin on its edge.
Peiyong Wang·Kieran Hymas·James Quach
theorem on the monogamy of entanglementWilliam WoottersAlain AspectAlan Guthquantum computerquantum entanglementquantum informationQuantum superpositionquantum algorithm
SimplePopularAdvanced