Science & Tech · Science & Environment · 1 hr ago
Quantum simulator reveals predicted energy patterns at two tipping points
A team led by Caltech researchers observed predicted energy patterns in a quantum simulator.
The patterns appear at quantum tipping points, where systems can show similar behavior, much as materials do near familiar changes such as boiling.
Physicist John Cardy predicted in 1984 that such systems would absorb energy in fixed patterns, but those patterns had not been measured.
The team used lasers to arrange and excite strontium atoms, then varied the laser frequencies to measure their energy levels.
The results matched predictions for the Ising and tricritical points, using chains of up to 35 atoms.
This gives researchers an experimental way to study quantum theories and how materials behave near tipping points at temperatures close to absolute zero.
The team plans to apply the method to systems whose responses are not known in advance, including ones classical computers cannot reach.
Researchers used a quantum simulator to observe predicted energy patterns at two quantum tipping points.
The team used chains of strontium atoms, manipulated with lasers, to measure the patterns.
The results matched predictions for the Ising point and the tricritical point.
The study tests theories first proposed decades ago and published its findings in Nature.
Researchers say the method could help investigate quantum systems whose behavior is not already known.
- Who
- An international team led by researchers from the California Institute of Technology.
- What
- The team measured energy patterns predicted by conformal field theories at two quantum tipping points.
- When
- The study was published on October 13, 2026.
- Where
- In a quantum simulator using strontium atoms; the research was led by Caltech researchers.
- Why
- To experimentally test predictions about energy patterns at critical tipping points and advance research into quantum systems.
This story does not have two clearly opposing sides.
Physicist John Cardy used conformal field theory mathematics to predict fixed energy patterns at critical tipping points.
The predicted energy ladder had been theorized but not observed or measured.
Researchers tuned strontium-atom chains close to tipping points and used laser modulation to reveal the energy patterns.
The study reporting the measurements was published in Nature.
- Atom type
- Strontium
- Largest chain tested
- 35 atoms
- Tipping points tested
- Ising point and tricritical point
- Theory proposed
- John Cardy's 1984 prediction
- Publication
- Nature
What people are saying
The energy levels predicted by these theories are important because they encode profound information about the theories themselves
We repeated the experiment on chains of up to 35 atoms, and the rungs came out as predicted by the Ising conformal field theory: the spectra collapsed onto a single universal curve once rescaled for size
What excites me is that the technique doesn't require knowing the answer in advance
Sources
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