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Physicists have created the world’s heaviest Schrödinger’s cat, bringing the bizarre behavior of the quantum world to larger scales than ever before.

The trick, performed by vibrating 100 million billion atoms inside a sand-grain-sized sapphire crystal, created the world’s heaviest quantum superposition as the crystal simultaneously oscillated in two different directions. Despite weighing just 16 micrograms (16 millionths of a gram), the crystal is trillions of times heftier than the molecules put into previous large-scale quantum states, and is visible to the naked eye. 

Taking its name from Erwin Schrödinger’s famous thought experiment, the new Schrödinger’s cat crystal could be used to design more robust quantum computers and reveal clues behind why quantum effects are not seen in the real world, according to the researchers. Their findings were published April 20 in the journal Science (opens in new tab) . 

Related: Scientists find a loophole in Heisenberg’s uncertainty principle

“Of course, in the lab we can’t realize … an experiment with an actual cat weighing several kilograms,” lead author Yiwen Chu, a physics professor at the Laboratory for Solid State Physics at ETH Zurich, said in a statement. But “by putting the two oscillation states of the crystal in a superposition, we have effectively created a Schrödinger cat weighing 16 micrograms.”RELATED STORIES—Largest objects ever get cooled down to their ‘quantum limit’

—Does reality exist when we’re not looking?

—Weird quantum boomerang predicted 60 years ago spotted for the first time

In Schrödinger’s thought experiment, the weird rules of the quantum world are envisioned by imagining a cat placed inside an opaque box with a poison vial whose release mechanism is controlled by radioactive decay — a completely random quantum process. Until the box is opened and the cat is observed, Schrödinger said, the rules of quantum mechanics mean that the unfortunate feline should exist in a superposition of states, simultaneously dead and alive.

As most quantum effects typically decohere and disappear at macroscopic scales, Schrödinger’s analogy was meant to demonstrate the fundamental differences between our world and the world of the very small. Yet no hard limit exists between the two realms, enabling physicists to begin cajoling complex, near-macroscopic-scale objects into showing freaky quantum behavior.

To achieve this, the physicists connected the vibrating part of the sapphire crystal to a superconducting circuit, shaking it in such a way that it began to vibrate in a superposition of two directions at once. 

Then, to confirm that they had indeed created a quantum cat, the researchers measured the spatial separation of the crystal’s two vibrating states. Though the vibrations were subatomic in scale (vibrating over a distance of a billionth of a billionth of a meter), they were clearly distinguishable from random thermal and quantum vibrations — the cat was real.

In the future, Chu would like to increase the mass of the Schrödinger’s cat crystal even more, creating macroscopic quantum objects that could be used to more robustly store information in quantum computers, look for gravitational waves and dark matter, and figure out how quantum effects disappear at the scale of real cats.

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Ecosystem health is the missing link to blockchain’s long-term success

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Ecosystem health is the missing link to blockchain’s long-term success

Ecosystem health is the key to blockchain’s long-term success. Cultivating transparency, strong developer tools and engaged communities, blockchain networks can grow securely and sustainably.

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Mabli Hall: Woman jailed for four years for causing eight-month-old baby’s death

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Mabli Hall: Woman jailed for four years for causing eight-month-old baby's death

A woman has been sentenced to four years in prison for causing the death of an eight-month-old baby by dangerous driving.

Bridget Curtis, 71, had previously pleaded guilty to causing the death of Mabli Cariad Hall outside Withybush Hospital in Haverfordwest, Pembrokeshire.

Mabli was airlifted to the University Hospital of Wales in Cardiff after she was hit by a white BMW on Wednesday 21 June 2023.

She was later moved to Bristol Royal Hospital for Children where she died four days later.

Mabli Cariad Hall died after a crash outside Withybush Hospital in Pembrokeshire. Pic: Family handout
Image:
Pic: Family handout

‘Entirely tragic’

Swansea Crown Court heard Mabli and her family were visiting her grandmother, who was receiving end-of-life care at the hospital, when the crash happened.

Prosecuting, Craig Jones said it was an “entirely tragic” case.

He said Mabli was “very nearly nine months” when she died, a day when the weather conditions were “fine and dry”.

Mabli was with her father in a grassed area under some trees opposite the hospital’s entrance.

“Mr Hall put Mabli back into her pushchair and was adjusting the straps when he heard the sound of an approaching vehicle,” Mr Jones said.

Bridget Curtis. File pic: Rex
Image:
Bridget Curtis. File pic: Rex

The court heard that Curtis had given her daughter a lift to the hospital for an appointment and had stopped the car outside the main entrance.

After she was dropped off, her daughter went to retrieve her handbag from the back of the car but was “unable to see the bag and tapped the window to attract her mother’s attention”.

“With the engine running, [the defendant] turned around from her seat to look in the back,” he said.

“The defendant had failed to switch off the vehicle and had failed to place the car, which was an automatic-geared vehicle, into a parked setting.”

In a period of four and a half seconds, the vehicle reached a top speed of 29 miles per hour and travelled a distance of 28 metres.

‘So beautiful’

In a victim impact statement, Rob Hall told the court he remembered Mabli “smiling at [him], making her cute noises”.

He said the “violent revving, screeching tyres” of the car was something he saw and heard “daily”.

Mr Hall said that after Mabli’s death, his family “were numb, felt helpless and destroyed”.

“This struggle continues to this day, and will always be there. Life from then until now has been horrendous. It’s been so hard to live this life,” he said.

“It’s exhausting, we’re drained, and I just don’t know how we recover from such trauma.”

Mabli Cariad Hall died after a crash outside Withybush Hospital in Pembrokeshire. Pic: Family handout
Image:
Pic: Family handout

Mabli’s mother, Gwen Hall, also read a victim impact statement from the witness box, telling the court the day Mabli died was the day her life “irreversibly changed for the worse”.

“She had said ‘Mamma’ for the first time only the day before,” she said.

Ms Hall said the family was “heartbroken”, but that the word “does not do justice to how broken and destroyed we are as a family”.

“Everyone needs to remember that Mabli was eight months old, she was so bright, so beautiful and so full of love and life. She was the apple of all our eye,” Ms Hall added.

“She was my best friend, my shadow, my second skin.”

‘Devastation of their lives’

In mitigation, Mr John Dye said the defendant had “led a blameless, law-abiding life”.

He said she had shown “extremely genuine remorse” and had written a letter to Mabli’s family.

The court heard Curtis had “ongoing mobility issues” and had caring responsibilities for her adult daughter.

Handing down his sentence of four years in prison, Judge Geraint Walters said “loving parents, siblings and a wider extended family suffered the devastation of their lives”.

“That is because that day, they suffered that which each parent dreads, the loss of a much-cherished child, then just eight months old,” he said.

“Her life was taken from her senselessly, and indeed needlessly, as a result of your actions.”

The judge said the case was aggravated by the fact that others were struck by the vehicle, namely Mabli’s father and uncle.

As well as the custodial sentence, Curtis was also disqualified from driving for eight years and would have to undergo a driving test before she could re-apply for a licence.

Mabli Hall, eight months, died after a crash outside Withybush Hospital. Pic: GoFundMe
Image:
Pic: GoFundMe

Addressing the media outside court, Mabli’s grandfather, Paul Sambrook, thanked “everyone who [had] been part of the process to secure justice for Mabli Cariad”.

“We’ve waited over 18 months for this day and finally this nightmarish chapter has come to an end,” he said.

“We’ll go home now and start to live our lives without Mabli. She was the sunshine who lit up our lives in so many ways, but now we have to focus on helping the other children of the family to cope with the loss and find a new way forward.

“If there is anything to learn from the pain and bereavement, this is what it is. Take care every time you sit behind the wheel of your car, think carefully about your own safety as well as the safety of others.”

Read more from Sky News:
Southport killer jailed for life with minimum of 52 years
Rare red warning for parts of UK as Storm Eowyn arrives

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Iwan Jenkins from CPS Wales told Sky News that nothing could change “the tragic events of that day”.

“Although the criminal case has concluded, our thoughts remain with Mabli’s family over their heart-breaking loss and with everybody who received injuries on that day,” he added.

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Meet Cadillac’s new $80,000 Lyriq-V, the quickest Caddie (EV or gas-powered) so far

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Meet Cadillac's new ,000 Lyriq-V, the quickest Caddie (EV or gas-powered) so far

With 615 horsepower, the Cadillac Lyriq-V is the quickest Caddie to date. Cadillac’s first V-Series EV will outsprint a CT5-V Blackwing, and it can be yours for under $80,000.

The 2026 Lyriq-V EV is the fastest Cadillac ever

We knew it was coming soon. Cadillac teased the Lyriq-V for the first time in late October, giving a sneak peek at its first electric V-Series vehicle.

Cadillac’s performance brand is known for iconic sports cars like the CT5-V Blackwing, but the new EV pushes the “V-Series sub-brand to new heights,” boasted John Roth, vice president of Global Cadillac.

As the first EV to wear the V-Series badge, Cadillac promised the Lyriq-V would be powerful, but we didn’t know it would be this fast.

Cadillac officially introduced the 2026 Lyriq-V on Thursday, revealing additional specs, prices, and more. With an estimated 615 hp and 650 lb-ft of torque and a standard dual motor AWD powertrain, the EV is expected to accelerate from 0 to 60 mph in just 3.3 seconds, making it the quickest Cadillac to date.

Cadillac-Lyriq-V-EV
2026 Cadillac Lyriq-V (Source: GM)

At that speed, it would outrun the Cadillac CT5-V Blackwing with a 0 to 60 mph sprint time in 3.4 seconds. Although the CT-5 packs slightly more horsepower (668 hp), the Lyriq-V’s EV powertrain unlocks more powerful, instant acceleration.

The added power is enabled by an added Velocity Max feature, which “unleashes the vehicle’s full performance capability” with a surge of power and acceleration.

Cadillac-Lyriq-V-EV
2026 Cadillac Lyriq-V (Source: GM)

Interior and exterior design, prices, and features

The V-Series model differs from the traditional Lyriq with a lower center of gravity and custom front and rear bumpers. It also features V-Series badging on the rear doors and tailgate, V-pattern mesh on the lower grille, and 22″ wheels with the logo etched into the side.

Inside, the performance EV borrows features from the Lyriq, such as a panoramic fixed glass roof, a 23-speaker AKG sound system, and a massive 33″ LED display screen.

Cadillac distinguishes the V-Series from the traditional Lyriq by adding the V-Series logo, a V-mode button, and a sports rim with hand grips. Other unique features include a custom infotainment experience with a “V-Series persona,” a signature V-Series illuminated sill plate and V-pattern detailing on the seatbacks.

A 102 kWh battery pack is expected to provide a range of up to 285 miles. The 2026 Cadillac Lyriq-V starts at $79,990, including the destination fee.

Cadillac-Lyriq-V-EV
2026 Cadillac Lyriq-V (Source: GM)

In comparison, the Tesla Model Y Performance starts at $51,490 and has an EPA-estimated range of up to 277 miles. It also includes AWD and can accelerate from 0 to 60 mph in 3.5 seconds.

Cadillac’s new performance EV will be sold in the US, Canada, Australia, and New Zealand. Other markets will be announced closer to launch. GM will begin producing the new Lyriq-V at its Spring Hill, TN, manufacturing plant in early 2025.

What do you think of the Cadillac’s new performance EV? Would you buy one for $80,000? Or are you sticking with the Model Y Performance? Drop us a comment below to let us know.

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