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Time crystal's fake application
(Fig.1) ↓ Time crystal just oscillates at different frequency or period (= 2T ) from the stimulator's frequency or period (= T ). No practical use.
Contrary to a lot of overhyped news, the time crystal is just a useless thing oscillated by some external stimulus ( this-2nd~7th-paragraphs ), which has nothing to do with a perpetual motion machine, a time travel nor a deadend quantum computer ( this or this-last-paragraph ).
Like ordinary matter, the time crystal obeys the law of energy conservation and thermodynamics. ← Time crystal is Not a perpetual motion machine.
This or this-6th-paragraph says -- No perpetual machine
"Unlike perpetual motion machines, Wilczek said time crystals would not violate the law of conservation of energy.... In time crystals, energy is conserved because nothing is taken away. The novelty is that, in these objects, the energy has its minimum configuration, but the velocities [of atoms in the object] are not zero."
This or this-8th-paragraph (2025) says -- Non-perpetual time crystal
"These remarkable properties have led to claims that time crystals are perpetual motion machines that violate the second law of thermodynamics, but this isn't the case. The crystals, which are driven by photons, or light particles, cannot lose or gain energy (= so this is fake news )."
This-last-paragraph says
"So, while time crystals won't turn into time machines or endless energy sources,"
This 2nd-last-paragraph says -- Useless time crystal
"the current experiments with time crystals are far from any practical applications, whatever they might be."
This or this-1st-paragraph (2026) says -- Impractical time crystal
"Time crystals, a collection of particles that tick —or move back and forth in repeating cycles.. While scientists have yet to create commercial or industrial applications for this intriguing form of matter"
Time crystal just means a useless thing that is oscillating at a different frequency and period from the frequency or period of the external stimuli (= such as light ) or driving force ( this-2~3rd-paragraphs ).
This-3rd-paragraph says -- Time crystal = oscillation
"A non-equilibrium (or discrete)
time crystal responds to a periodic driving force by showing some kind of
oscillation in time with a period different to – generally some whole multiple of – the driver."
This p.2-left-3rd paragraphs says -- Oscillating time crystal
"That time crystals are related to quantum self organization of motion of a many-body system that is periodically driven by an external force... the system
prefers to move on its own and spontaneously switches to
a periodic motion with a different period than a period
of driving."
This-section below "Making a Time crystal" says
"In Lukin's project, the scientists used microwave pulses to flip the diamond defects' spins... the materials received external stimulation—lasers or microwave pulses—but they displayed a different period than that of their stimuli. In other words, they broke time symmetry spontaneously ( this 2~3rd-paragraphs )."
This or this 2~4th-paragraphs say -- Differen-period oscillation
"scientists have indeed succeeded on a handful of occasions in demonstrating a potential time crystal. However, these were systems that -- unlike Wilczek's original idea -- are subjected to a temporal excitation with a specific periodicity, but then react with another period twice as long ( This 12th-paragraph )."
This overhyped fake news (2025) ↓
3rd-paragraph says -- Fake news
"continuous time crystal (CTC),... The Aalto University researchers say the breakthrough could have big ramifications for quantum computing."
6th-paragraph says -- Just helium oscillating
"scientists used radio waves to pump magnons—a kind of quasiparticle (= unreal particles expressing just useless magnetic fluctuation )—into a helium-3 superfluid at temperatures near absolute zero. When they turned off the pump, the magnons formed a time crystal lasting 108 cycles, or several minutes (← helium atoms oscillated stimulated by radio wave for a short time, Not a perpetual-motion machine, contrary to hypes )."
↑ This research paper-p.1-abstract and introduction says nothing about any practical use of time crystal such as quantum computers contrary to the above fake news.
This or this recent news (2026) says ↓
2nd-last-paragraph says -- Error-prone quantum computer
"all existing quantum computers suffer from errors, so the researchers had to use those conventional methods to estimate where the quantum result may become unreliable. This back-and-forth between approximate conventional methods and exact but error-prone quantum approaches could sharpen our understanding of many complex quantum models"
↑ So the present quantum computers are too error-prone to give right answers (= noisy this-last-paragraph ), so No quantum advantage.
↑ This-research paper ↓
p.1-abstract says nothing about any practical use of quantum computers nor time crystals (= so useless time crystal research ), contrary to the above hyped news.
p.3-right-3rd~4th-paragraphs say --
Classical computer better
"the nearest-neighbor
correlations decay over time due to (quantum computer )
hardware noise (= errors ). This behavior is
demonstrated by a comparison with the noiseless result obtained from
classical simulations (=
noiseless = errorless classical computers clearly outperform error-prone quantum computers )"
This overhyped news (2025) says ↓
6th-paragraph says -- Just liquid crystal oscillation
"the researchers designed glass cells filled with liquid crystals—in this case, rod-shaped molecules that behave a little like a solid and a little like a liquid. Under special circumstances, if you shine a light on them, the liquid crystals will begin to swirl and move,"
7th-paragraph says -- Not perpetual machine
"Under a microscope, these liquid crystal samples resemble psychedelic tiger stripes, and they can keep moving for hours (= Not perpetual-motion machine ! )—similar to that eternally spinning clock."
2nd-last-paragraph says -- Impractical time crystal
"Governments could (= just speculation, still useless ), for example, add these materials to bills to make them harder to counterfeit—if you want to know if that $100 bill is genuine, just shine a light on the “time watermark” and watch the pattern that appears"
↑ It is impractical to put this liquid crystal to all $100 bills.
↑ This or this research paper ↓
p.11-right-3rd-last~2nd-last-paragraphs say -- No quantum mechanical prediction
"The temperature-dependent parameters K11,
K22, K33 and Δn (birefringence) are fitted with the empirical equations:" ← Time crystal needing empirically-fitting free parameters can Not be predicted by quantum mechanical theory.
This research paper ↓
p.1-abstract says nothing about practical use of time crystal (= useless time crystal ).
p.1-right-2nd-paragraph says "We experimentally investigate the formation of discrete time-crystalline order in an ensemble of nitrogen vacancy (NV) spin impurities in diamond. Each NV center has an electronic S = 1 spin (= fictional electron spin itself is unobservable. Only light wave interacting with atomic energy levels was observable )"
"..from which we isolate an effective two level system by applying an external magnetic field. These isolated spin states can be optically initialized/detected and manipulated via microwave radiation"
p.2-right-2nd-paragraph says "We begin by applying continuous microwave driving... with a total period T = τ1 + τ2 and is repeated n times,"
p.2-right-3rd-paragraph says "we observe that the spin polarization P (= meaning just NV-center's two energy states ) alternates between positive and negative values, resulting in a subharmonic peak at ν = 1/2.. Remarkably, we find that a rigid 2T-periodic response is restored."
↑ In this experiment, they illuminated diamond's nitrogen-vacancy (=NV)-center by microwave with period of T, and NV-center oscillated between two energy levels with the period of 2T, which periodic difference they called "time crystal" that is just "unexpected spontaneous oscillation" with No practical use.
The 7th-10th, 12th paragraphs of this hyped news say
"From 2017 onward, scientists have indeed succeeded on a handful of occasions in demonstrating a potential time crystal. However, these were systems that—unlike Wilczek's original idea—are subjected to a temporal excitation with a specific periodicity, but then react with another period twice as long."
"A crystal that behaves periodically in time, although excitation is time-independent"
"physicists.. now designed a special crystal made of indium gallium arsenide, in which the nuclear spins act as a reservoir for the time crystal. The crystal is continuously illuminated so that a nuclear spin polarization forms through interaction with electron spins (= this experiment did Not see the unreal electron spin itself ). And it is precisely this nuclear spin polarization that then spontaneously generates oscillations, equivalent to a time crystal."
"The status of the experiments at the present time is that the crystal's lifetime is at least 40 minutes"
"These areas are also interesting, as chaotic behavior, which can be maintained over long periods of time (← No mention of practical use, which means the alleged time crystal showing only chaotic behavior is completely useless )"
↑ This experiment just continuously illuminated some material by laser light at extremely low temperature (< 20K ), and measured some periodic magnetic polarization change (= Not seeing electron spin ) of the material by the probe light based on classical Faraday rotation effect that just sees material magnetic direction, Not the unreal spin ( this p.2-Fig.1b ).
↑ That's all, this so-called time crystal is completely a meaningless, useless concept except for researchers wasting time to publish papers in academic journals.
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